2008 - 2015 Microchip Technology Inc.
DS00001902A-page 1
Highlights
• Integrated ESD protection circuits
- Up to ±15kV IEC Air Discharge without exter-
nal devices
• Over-Voltage Protection circuit (OVP) protects the
VBUS pin from continuous DC voltages up to 30V
• Integrated USB Switch
- No degradation of Hi-Speed electrical char-
acteristics
- Allows single USB port of connection by pro-
viding switching function for:
- Battery charging
- Stereo and mono/mic audio
- USB Full-Speed/Low-Speed data
• flexPWR
®
Technology
- Low current design ideal for battery powered
applications
- “Sleep” mode tri-states all ULPI pins and
places the part in a low current state
- 1.8V IO Voltage (±10%)
• Integrated battery to 3.3V LDO regulator
- 2.2uF bypass capacitor
- 100mV dropout voltage
• “Wrapper-less” design for optimal timing perfor-
mance and design ease
- Low Latency Hi-Speed Receiver (43 Hi-
Speed clocks Max) allows use of legacy
UTMI Links with a ULPI bridge
• External Reference Clock operation
- ULPI Input Clock Mode (60MHz sourced by
Link)
- 0 to 3.6V input drive tolerant
- Able to accept “noisy” clock sources as refer-
ence to internal, low-jitter PLL
- Frequencies: 12, 13, 19.2, 26, or 27MHz
• Smart detection circuits allow identification of
USB charger, headset, or data cable insertion
• Includes full support for the optional On-The-Go
(OTG) protocol detailed in the On-The-Go Sup-
plement Revision 2.0 specification
• Supports the OTG Host Negotiation Protocol
(HNP) and Session Request Protocol (SRP)
• UART mode for non-USB serial data transfers
• Internal 5V cable short-circuit protection of ID, DP
and DM lines to VBUS or ground
• Industrial Operating Temperature -40
°C to +85°C
• 25-ball WLCSP RoHS compliant package;
(2.0 x 2.0 x 0.53mm height)
Applications
The USB332x is targeted for any application where a
Hi-Speed USB connection is desired and when board
space, power, and interface pins must be minimized.
The USB332x is well suited for:
• Cell Phones
• PDAs
• MP3 Players
• GPS Personal Navigation Devices
• Datacards
• Scanners
• External Hard Drives
• Digital Still and Video Cameras
• Portable Media Players
• Entertainment Devices
• Printers
• HDTVs
• Set Top Boxes/DVR/PVR
• Video Record/Playback Systems
• IP and Video Phones
• Gaming Consoles
• POS Terminals
USB332x
Industry’s Smallest Hi-Speed USB Transceiver with 1.8V
ULPI Interface
USB332x
DS00001902A-page 2
2008 - 2015 Microchip Technology Inc.
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and
enhanced as new volumes and updates are introduced.
If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via
E-mail at
docerrors@microchip.com
. We welcome your feedback.
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for cur-
rent devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the
revision of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
• Microchip’s Worldwide Web site;
http://www.microchip.com
• Your local Microchip sales office (see last page)
When contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature number) you are
using.
Customer Notification System
Register on our web site at
www.microchip.com
to receive the most current information on all of our products.
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 3
USB332x
Table of Contents
1.0 Introduction ..................................................................................................................................................................................... 4
2.0 USB332x Pin Locations and Definitions ......................................................................................................................................... 6
3.0 Limiting Values ................................................................................................................................................................................ 9
4.0 Electrical Characteristics ............................................................................................................................................................... 10
5.0 Architecture Overview ................................................................................................................................................................... 16
6.0 ULPI Operation ............................................................................................................................................................................. 30
7.0 ULPI Register Map ........................................................................................................................................................................ 46
8.0 Application Notes .......................................................................................................................................................................... 56
9.0 Package Outline, Tape & Reel Drawings, Package Marking ........................................................................................................ 60
Appendix A: Revision History .............................................................................................................................................................. 65
The Microchip Web Site ...................................................................................................................................................................... 67
Customer Change Notification Service ............................................................................................................................................... 67
Customer Support ............................................................................................................................................................................... 67
Product Identification System ............................................................................................................................................................. 68
USB332x
DS00001902A-page 4
2008 - 2015 Microchip Technology Inc.
1.0
INTRODUCTION
Microchip’s USB332x is a family of Hi-Speed USB 2.0 Transceivers that provides a physical layer (PHY) solution well-
suited for portable electronic devices. Both commercial and industrial temperature applications are supported.
Each model in the USB332x family may use a 60MHz reference clock, or the model-number specific reference clock
shown in
Product Identification System on page 68
.
Several advanced features make the USB332x the transceiver of choice by reducing both electrical bill of material
(eBOM) part count and printed circuit board (PCB) area. Outstanding ESD robustness eliminates the need for external
ESD protection devices in typical applications. The internal Over-Voltage Protection circuit (OVP) protects the USB332x
from voltages up to 30V. By using a reference clock from the Link, the USB332x removes the cost of a dedicated crystal
reference from the design. And the integrated USB switch enables unique product features with a single USB port of
connection.
The USB332x meets all of the electrical requirements to be used as a Hi-Speed USB Host, Device, or an On-the-Go
(OTG) transceiver. In addition to the supporting USB signaling, the USB332x also provides USB UART mode and USB
Audio mode.
USB332x uses the industry standard UTMI+ Low Pin Interface (ULPI) to connect the USB PHY to the Link. ULPI uses
a method of in-band signaling and status byte transfers between the Link and PHY to facilitate a USB session with only
12 pins.
The USB332x uses Microchip’s “wrapper-less” technology to implement the ULPI interface. This “wrapper-less” tech-
nology allows the PHY to achieve a low latency transmit and receive time. Microchip’s low latency transceiver allows an
existing UTMI Link to be reused by adding a UTMI to ULPI bridge. By adding a bridge to the ASIC the existing and
proven UTMI Link IP can be reused.
The USB332x includes an integrated 3.3V Low Drop Out (LDO) linear voltage regulator that may optionally be used to
generate 3.3V from power applied at the VBAT pin. The voltage on the VBAT pin can range from 3.1 to 5.5V. The reg-
ulator dropout voltage is less than 100mV which allows the PHY to continue USB signaling when the voltage on VBAT
drops to 3.1V. The USB transceiver will continue to operate at lower voltages, although some parameters may be out-
side the limits of the USB specifications. If the user would like to provide a 3.3V supply to the USB332x, the VBAT and
VDD33
pins should be connected together as described in
Section 5.5.1
.
FIGURE 1-1:
USB332X BLOCK DIAGRAM
OTG
USB
DP/DM
Switch
Hi-Speed
USB
Transceiver
ULPI
Interface
ULPI
Registers
and State
Machine
BIAS
Low Jitter
Integrated
PLL
Integrated
Power
Management
VBUS
ID
DP
DM
RBIAS
E
S
D Protection
SP
K
_
L
SPK
_R
REFCLK
DATA[7:0]
RESETB
VDD18
VDD33
VBAT
DIR
NXT
STP
CLKOUT
OVP
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 5
USB332x
The USB332x also includes integrated pull-up resistors that can be used for detecting the attachment of a USB Charger.
By sensing the attachment to a USB Charger, a product using the USB332x can charge its battery at more than the
500mA allowed when charging from a USB Host as described in
Section 8.2
.
In USB UART mode, the USB332x DP and DM pins are redefined to enable pass-through of asynchronous serial data.
The USB332x can only enter UART mode when the user programs the part into this mode, as described in
Section 6.5.1
.
In USB audio mode, a switch connects the DP pin to the SPK_R pin, and another switch connects he DM pin to the
SPK_L
pin. These switches are shown in the lower left-hand corner of
Figure 5-1
. The USB332x can be configured to
enter USB audio mode as described in
Section 6.5.2
. In addition, these switches are on when the RESETB pin of the
USB332x is asserted. The USB audio mode enables audio signaling from a single USB port of connection, and the
switches may also be used to connect Full Speed USB from another PHY onto the USB cable.
1.1
Reference Documents
• Universal Serial Bus Specification, Revision 2.0, April 27, 2000
• On-The-Go Supplement to the USB 2.0 Specification, Revision 2.0, May 8, 2009
• 27% Resistor ECN
• USB 2.0 Transceiver Macrocell Interface (UTMI) Specification, Version 1.12, May 27, 2000
• UTMI+ Specification, Revision 1.1, February 25, 2004
• UTMI+ Low Pin Interface (ULPI) Specification, Revision 1.1, October 20th, 2004
• Technical Requirements and Test Methods of Charger and Interface for Mobile Telecommunication Terminal
Equipment (Chinese Charger Specification Approval Draft 11/29/2006)
USB332x
DS00001902A-page 6
2008 - 2015 Microchip Technology Inc.
2.0
USB332X PIN LOCATIONS AND DEFINITIONS
2.1
USB332x
Ball Locations and Descriptions
2.1.1
PACKAGE DIAGRAM WITH BALL LOCATIONS
The illustration below is viewed from the top of the package.
2.1.2
BALL DEFINITIONS
The following table details the ball definitions for the figure above.
FIGURE 2-1:
USB332X BALL LOCATIONS - TOP VIEW
TABLE 2-1:
USB332X PIN DESCRIPTION
Ball
Name
Direction/
Type
Active
Level
Description
B1
ID
Input,
Analog
N/A
ID
pin of the USB cable. For applications
not using ID this pin can be connected to
VDD33
. For an A-Device ID is grounded.
For a B-Device ID is floated.
C2
VBUS
I/O,
Analog
N/A
This pin connects to an external resistor
(R
VBUS
) connected to the VBUS pin of the
USB cable. This pin is used for the VBUS
comparator inputs and for VBUS pulsing
during session request protocol. See
Table 5-6, "Required RVBUS Resistor
Value"
.
C1
VBAT
Power
N/A
Regulator input.
D2
VDD33
Power
N/A
3.3V Regulator Output. A 2.2uF (<1 ohm
ESR) bypass capacitor to ground is
required for regulator stability. The bypass
capacitor should be placed as close as
possible to the USB332x.
D1
DM
I/O,
Analog
N/A
D- pin of the USB cable.
A
E
D
C
B
1
5
4
3
2
TOP VIEW
RESETB
ID
VBUS
VBAT
VDD33
DM
DP
SPK_R
SPK_L
DATA[7]
DATA[4]
DATA[6]
DATA[5]
CLKOUT
DATA[3]
DATA[2]
DATA[1]
DATA[0]
NXT
DIR
STP
VDD18
REFCLK
RBIAS
GND
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 7
USB332x
E1
DP
I/O,
Analog
N/A
D+ pin of the USB cable.
E2
SPK_R
I/O,
Analog
N/A
USB switch in/out for DP signals
E3
SPK_L
I/O,
Analog
N/A
USB switch in/out for DM signals
D3
DATA[7]
I/O,
CMOS
N/A
ULPI bi-directional data bus. DATA[7] is
the MSB.
E4
DATA[6]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
E5
DATA[5]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
D4
DATA[4]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
A5
CLKOUT
Output,
CMOS
N/A
ULPI Clock Out Mode:
60MHz ULPI clock output. All ULPI signals
are driven synchronous to the rising edge
of this clock.
ULPI Clock In Mode:
This pin is connected to VDD18 to
configure 60MHz ULPI Clock IN mode as
described in
Section 5.4.1
.
D5
DATA[3]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
C4
DATA[2]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
C5
DATA[1]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
B4
DATA[0]
I/O,
CMOS
N/A
ULPI bi-directional data bus. DATA[0] is
the LSB.
B5
NXT
Output,
CMOS
High
The PHY asserts NXT to throttle the data.
When the Link is sending data to the PHY,
NXT
indicates when the current byte has
been accepted by the PHY. The Link
places the next byte on the data bus in the
following clock cycle.
A4
DIR
Output,
CMOS
N/A
Controls the direction of the data bus.
When the PHY has data to transfer to the
Link, it drives DIR high to take ownership
of the bus. When the PHY has no data to
transfer it drives DIR low and monitors the
bus for commands from the Link.
A3
STP
Input,
CMOS
High
The Link asserts STP for one clock cycle
to stop the data stream currently on the
bus. If the Link is sending data to the PHY,
STP
indicates the last byte of data was on
the bus in the previous cycle.
B3
VDD18
Power
N/A
External 1.8V Supply input pin. This pad
needs to be bypassed with a 0.1uF
capacitor to ground, placed as close as
possible to the USB332x.
TABLE 2-1:
USB332X PIN DESCRIPTION (CONTINUED)
Ball
Name
Direction/
Type
Active
Level
Description
USB332x
DS00001902A-page 8
2008 - 2015 Microchip Technology Inc.
B2
RESETB
Input,
CMOS,
Low
When low, the part is suspended with all
ULPI outputs tri-stated. When high, the
USB332x will operate as a normal ULPI
device, as described in
Section 5.5.2
. The
state of this pin may be changed
asynchronously to the clock signals. When
asserted for a minimum of 1 microsecond
and then de-asserted, the ULPI registers
are reset to their default state and all
internal state machines are reset.
A2
REFCLK
Input,
CMOS
N/A
ULPI Clock Out Mode:
Model-specific reference clock.
See
Product Identification System on page
68
ULPI Clock In Mode:
60MHz ULPI clock input.
A1
RBIAS
Analog,
CMOS
N/A
Bias Resistor pin. This pin requires an
8.06kΩ (±1%) resistor to ground, placed as
close as possible to the USB332x.
Nominal voltage during ULPI operation is
0.8V.
C3
GND
Ground
N/A
Ground.
TABLE 2-1:
USB332X PIN DESCRIPTION (CONTINUED)
Ball
Name
Direction/
Type
Active
Level
Description
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 9
USB332x
3.0
LIMITING VALUES
3.1
Absolute Maximum Ratings
3.2
Recommended Operating Conditions
TABLE 3-1:
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Conditions
MIN
TYP MAX Units
VBUS
, VBAT, ID, DP, DM,
SPK_L
, and SPK_R
voltage to GND
V
MAX_5V
Voltage measured at pin.
VBUS
tolerant to 30V with
external R
VBUS
.
-0.5
+6.0
V
Maximum VDD18 voltage
to Ground
V
MAX_18V
-0.5
2.5
V
Maximum VDD33 voltage
to Ground
V
MAX_33V
-0.5
4.0
V
Maximum I/O voltage to
Ground
V
MAX_IN
-0.5
V
DD18
+ 0.7
V
Operating Temperature
T
MAX_OP
-40
85
C
Storage Temperature
T
MAX_STG
-55
150
C
Note:
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
TABLE 3-2:
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Conditions
MIN
TYP MAX
Units
VBAT
to GND
V
VBAT
3.1
5.5
V
VDD33
to GND
V
DD33
3.0
3.3
3.6
V
VDD18
to GND
V
DD18
1.6
1.8
2.0
V
Input Voltage on Digital
Pins (RESETB, STP, DIR,
NXT
, DATA[7:0])
V
I
0.0
V
DD18
V
Voltage on Analog I/O
Pins (DP, DM, ID, SPK_L,
SPK_R
)
V
I(I/O)
0.0
V
DD33
V
VBUS
to GND
V
VMAX
0.0
5.5
Ambient Temperature
T
A
-40
85
C
USB332x
DS00001902A-page 10
2008 - 2015 Microchip Technology Inc.
4.0
ELECTRICAL CHARACTERISTICS
The following conditions are assumed unless otherwise specified:
V
VBAT
= 3.1 to 5.5V; V
DD18
= 1.6 to 2.0V; V
SS
= 0V; T
A
= -40C to +85C
The current for 3.3V circuits is sourced at the VBAT pin, except when using an external 3.3V supply as shown in
Figure 5-6
.
4.1
Operating Current
Note 4-1
ClockSuspendM
bit = 0.
Note 4-2
SessEnd, VbusVld, and IdFloat comparators disabled. STP Interface protection disabled.
TABLE 4-1:
OPERATING CURRENT
Parameter
Symbol
Conditions
MIN
TYP MAX Units
Synchronous Mode Current
(Default Configuration)
I
33AVG(SYNC)
Start-up sequence defined in
Section 5.5.4
has
completed.
5
5.7
5.9
mA
I
18AVG(SYNC)
19
22.6
27.5
mA
Synchronous Mode Current
(HS USB operation)
I
33AVG(HS)
Active USB Transfer
10
11.5
13.5
mA
I
18AVG(HS)
28
33.6
37
mA
Synchronous Mode Current
(FS/LS USB operation)
I
33AVG(FS)
Active USB Transfer
10
10.5
11.3
mA
I
18AVG(FS)
23
27.2
29.4
mA
Serial Mode Current
(FS/LS USB)
Note 4-1
I
33AVG(FS_S)
5
5.7
5.9
mA
I
18AVG(FS_S)
2
2.9
3.9
mA
USB UART Current
Note 4-1
I
33AVG(UART)
5
5.7
5.9
mA
I
18AVG(UART)
2
2.9
3.9
mA
USB Audio Mode
I
33AVG(AUDIO)
V
VBAT
= 4.2V
V
DD18
= 1.8V
17
22
32.3
uA
I
18AVG(AUDIO)
30
36.3
60
uA
Low Power Mode
Note 4-2
I
DD33(LPM)
V
VBAT
= 4.2V
V
DD18
= 1.8V
17
22.1
34
uA
I
DD18(LPM)
1.2
32
uA
Standby Mode
I
DD33(RSTB)
RESETB = 0
V
VBAT
= 4.2V
V
DD18
= 1.8V
17
20.8
34
uA
I
DD18(RSTB)
0.9
32
uA
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 1
Highlights
• Integrated ESD protection circuits
- Up to ±15kV IEC Air Discharge without exter-
nal devices
• Over-Voltage Protection circuit (OVP) protects the
VBUS pin from continuous DC voltages up to 30V
• Integrated USB Switch
- No degradation of Hi-Speed electrical char-
acteristics
- Allows single USB port of connection by pro-
viding switching function for:
- Battery charging
- Stereo and mono/mic audio
- USB Full-Speed/Low-Speed data
• flexPWR
®
Technology
- Low current design ideal for battery powered
applications
- “Sleep” mode tri-states all ULPI pins and
places the part in a low current state
- 1.8V IO Voltage (±10%)
• Integrated battery to 3.3V LDO regulator
- 2.2uF bypass capacitor
- 100mV dropout voltage
• “Wrapper-less” design for optimal timing perfor-
mance and design ease
- Low Latency Hi-Speed Receiver (43 Hi-
Speed clocks Max) allows use of legacy
UTMI Links with a ULPI bridge
• External Reference Clock operation
- ULPI Input Clock Mode (60MHz sourced by
Link)
- 0 to 3.6V input drive tolerant
- Able to accept “noisy” clock sources as refer-
ence to internal, low-jitter PLL
- Frequencies: 12, 13, 19.2, 26, or 27MHz
• Smart detection circuits allow identification of
USB charger, headset, or data cable insertion
• Includes full support for the optional On-The-Go
(OTG) protocol detailed in the On-The-Go Sup-
plement Revision 2.0 specification
• Supports the OTG Host Negotiation Protocol
(HNP) and Session Request Protocol (SRP)
• UART mode for non-USB serial data transfers
• Internal 5V cable short-circuit protection of ID, DP
and DM lines to VBUS or ground
• Industrial Operating Temperature -40
°C to +85°C
• 25-ball WLCSP RoHS compliant package;
(2.0 x 2.0 x 0.53mm height)
Applications
The USB332x is targeted for any application where a
Hi-Speed USB connection is desired and when board
space, power, and interface pins must be minimized.
The USB332x is well suited for:
• Cell Phones
• PDAs
• MP3 Players
• GPS Personal Navigation Devices
• Datacards
• Scanners
• External Hard Drives
• Digital Still and Video Cameras
• Portable Media Players
• Entertainment Devices
• Printers
• HDTVs
• Set Top Boxes/DVR/PVR
• Video Record/Playback Systems
• IP and Video Phones
• Gaming Consoles
• POS Terminals
USB332x
Industry’s Smallest Hi-Speed USB Transceiver with 1.8V
ULPI Interface
USB332x
DS00001902A-page 2
2008 - 2015 Microchip Technology Inc.
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and
enhanced as new volumes and updates are introduced.
If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via
E-mail at
docerrors@microchip.com
. We welcome your feedback.
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for cur-
rent devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the
revision of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
• Microchip’s Worldwide Web site;
http://www.microchip.com
• Your local Microchip sales office (see last page)
When contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature number) you are
using.
Customer Notification System
Register on our web site at
www.microchip.com
to receive the most current information on all of our products.
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 3
USB332x
Table of Contents
1.0 Introduction ..................................................................................................................................................................................... 4
2.0 USB332x Pin Locations and Definitions ......................................................................................................................................... 6
3.0 Limiting Values ................................................................................................................................................................................ 9
4.0 Electrical Characteristics ............................................................................................................................................................... 10
5.0 Architecture Overview ................................................................................................................................................................... 16
6.0 ULPI Operation ............................................................................................................................................................................. 30
7.0 ULPI Register Map ........................................................................................................................................................................ 46
8.0 Application Notes .......................................................................................................................................................................... 56
9.0 Package Outline, Tape & Reel Drawings, Package Marking ........................................................................................................ 60
Appendix A: Revision History .............................................................................................................................................................. 65
The Microchip Web Site ...................................................................................................................................................................... 67
Customer Change Notification Service ............................................................................................................................................... 67
Customer Support ............................................................................................................................................................................... 67
Product Identification System ............................................................................................................................................................. 68
USB332x
DS00001902A-page 4
2008 - 2015 Microchip Technology Inc.
1.0
INTRODUCTION
Microchip’s USB332x is a family of Hi-Speed USB 2.0 Transceivers that provides a physical layer (PHY) solution well-
suited for portable electronic devices. Both commercial and industrial temperature applications are supported.
Each model in the USB332x family may use a 60MHz reference clock, or the model-number specific reference clock
shown in
Product Identification System on page 68
.
Several advanced features make the USB332x the transceiver of choice by reducing both electrical bill of material
(eBOM) part count and printed circuit board (PCB) area. Outstanding ESD robustness eliminates the need for external
ESD protection devices in typical applications. The internal Over-Voltage Protection circuit (OVP) protects the USB332x
from voltages up to 30V. By using a reference clock from the Link, the USB332x removes the cost of a dedicated crystal
reference from the design. And the integrated USB switch enables unique product features with a single USB port of
connection.
The USB332x meets all of the electrical requirements to be used as a Hi-Speed USB Host, Device, or an On-the-Go
(OTG) transceiver. In addition to the supporting USB signaling, the USB332x also provides USB UART mode and USB
Audio mode.
USB332x uses the industry standard UTMI+ Low Pin Interface (ULPI) to connect the USB PHY to the Link. ULPI uses
a method of in-band signaling and status byte transfers between the Link and PHY to facilitate a USB session with only
12 pins.
The USB332x uses Microchip’s “wrapper-less” technology to implement the ULPI interface. This “wrapper-less” tech-
nology allows the PHY to achieve a low latency transmit and receive time. Microchip’s low latency transceiver allows an
existing UTMI Link to be reused by adding a UTMI to ULPI bridge. By adding a bridge to the ASIC the existing and
proven UTMI Link IP can be reused.
The USB332x includes an integrated 3.3V Low Drop Out (LDO) linear voltage regulator that may optionally be used to
generate 3.3V from power applied at the VBAT pin. The voltage on the VBAT pin can range from 3.1 to 5.5V. The reg-
ulator dropout voltage is less than 100mV which allows the PHY to continue USB signaling when the voltage on VBAT
drops to 3.1V. The USB transceiver will continue to operate at lower voltages, although some parameters may be out-
side the limits of the USB specifications. If the user would like to provide a 3.3V supply to the USB332x, the VBAT and
VDD33
pins should be connected together as described in
Section 5.5.1
.
FIGURE 1-1:
USB332X BLOCK DIAGRAM
OTG
USB
DP/DM
Switch
Hi-Speed
USB
Transceiver
ULPI
Interface
ULPI
Registers
and State
Machine
BIAS
Low Jitter
Integrated
PLL
Integrated
Power
Management
VBUS
ID
DP
DM
RBIAS
E
S
D Protection
SP
K
_
L
SPK
_R
REFCLK
DATA[7:0]
RESETB
VDD18
VDD33
VBAT
DIR
NXT
STP
CLKOUT
OVP
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 5
USB332x
The USB332x also includes integrated pull-up resistors that can be used for detecting the attachment of a USB Charger.
By sensing the attachment to a USB Charger, a product using the USB332x can charge its battery at more than the
500mA allowed when charging from a USB Host as described in
Section 8.2
.
In USB UART mode, the USB332x DP and DM pins are redefined to enable pass-through of asynchronous serial data.
The USB332x can only enter UART mode when the user programs the part into this mode, as described in
Section 6.5.1
.
In USB audio mode, a switch connects the DP pin to the SPK_R pin, and another switch connects he DM pin to the
SPK_L
pin. These switches are shown in the lower left-hand corner of
Figure 5-1
. The USB332x can be configured to
enter USB audio mode as described in
Section 6.5.2
. In addition, these switches are on when the RESETB pin of the
USB332x is asserted. The USB audio mode enables audio signaling from a single USB port of connection, and the
switches may also be used to connect Full Speed USB from another PHY onto the USB cable.
1.1
Reference Documents
• Universal Serial Bus Specification, Revision 2.0, April 27, 2000
• On-The-Go Supplement to the USB 2.0 Specification, Revision 2.0, May 8, 2009
• 27% Resistor ECN
• USB 2.0 Transceiver Macrocell Interface (UTMI) Specification, Version 1.12, May 27, 2000
• UTMI+ Specification, Revision 1.1, February 25, 2004
• UTMI+ Low Pin Interface (ULPI) Specification, Revision 1.1, October 20th, 2004
• Technical Requirements and Test Methods of Charger and Interface for Mobile Telecommunication Terminal
Equipment (Chinese Charger Specification Approval Draft 11/29/2006)
USB332x
DS00001902A-page 6
2008 - 2015 Microchip Technology Inc.
2.0
USB332X PIN LOCATIONS AND DEFINITIONS
2.1
USB332x
Ball Locations and Descriptions
2.1.1
PACKAGE DIAGRAM WITH BALL LOCATIONS
The illustration below is viewed from the top of the package.
2.1.2
BALL DEFINITIONS
The following table details the ball definitions for the figure above.
FIGURE 2-1:
USB332X BALL LOCATIONS - TOP VIEW
TABLE 2-1:
USB332X PIN DESCRIPTION
Ball
Name
Direction/
Type
Active
Level
Description
B1
ID
Input,
Analog
N/A
ID
pin of the USB cable. For applications
not using ID this pin can be connected to
VDD33
. For an A-Device ID is grounded.
For a B-Device ID is floated.
C2
VBUS
I/O,
Analog
N/A
This pin connects to an external resistor
(R
VBUS
) connected to the VBUS pin of the
USB cable. This pin is used for the VBUS
comparator inputs and for VBUS pulsing
during session request protocol. See
Table 5-6, "Required RVBUS Resistor
Value"
.
C1
VBAT
Power
N/A
Regulator input.
D2
VDD33
Power
N/A
3.3V Regulator Output. A 2.2uF (<1 ohm
ESR) bypass capacitor to ground is
required for regulator stability. The bypass
capacitor should be placed as close as
possible to the USB332x.
D1
DM
I/O,
Analog
N/A
D- pin of the USB cable.
A
E
D
C
B
1
5
4
3
2
TOP VIEW
RESETB
ID
VBUS
VBAT
VDD33
DM
DP
SPK_R
SPK_L
DATA[7]
DATA[4]
DATA[6]
DATA[5]
CLKOUT
DATA[3]
DATA[2]
DATA[1]
DATA[0]
NXT
DIR
STP
VDD18
REFCLK
RBIAS
GND
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 7
USB332x
E1
DP
I/O,
Analog
N/A
D+ pin of the USB cable.
E2
SPK_R
I/O,
Analog
N/A
USB switch in/out for DP signals
E3
SPK_L
I/O,
Analog
N/A
USB switch in/out for DM signals
D3
DATA[7]
I/O,
CMOS
N/A
ULPI bi-directional data bus. DATA[7] is
the MSB.
E4
DATA[6]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
E5
DATA[5]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
D4
DATA[4]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
A5
CLKOUT
Output,
CMOS
N/A
ULPI Clock Out Mode:
60MHz ULPI clock output. All ULPI signals
are driven synchronous to the rising edge
of this clock.
ULPI Clock In Mode:
This pin is connected to VDD18 to
configure 60MHz ULPI Clock IN mode as
described in
Section 5.4.1
.
D5
DATA[3]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
C4
DATA[2]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
C5
DATA[1]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
B4
DATA[0]
I/O,
CMOS
N/A
ULPI bi-directional data bus. DATA[0] is
the LSB.
B5
NXT
Output,
CMOS
High
The PHY asserts NXT to throttle the data.
When the Link is sending data to the PHY,
NXT
indicates when the current byte has
been accepted by the PHY. The Link
places the next byte on the data bus in the
following clock cycle.
A4
DIR
Output,
CMOS
N/A
Controls the direction of the data bus.
When the PHY has data to transfer to the
Link, it drives DIR high to take ownership
of the bus. When the PHY has no data to
transfer it drives DIR low and monitors the
bus for commands from the Link.
A3
STP
Input,
CMOS
High
The Link asserts STP for one clock cycle
to stop the data stream currently on the
bus. If the Link is sending data to the PHY,
STP
indicates the last byte of data was on
the bus in the previous cycle.
B3
VDD18
Power
N/A
External 1.8V Supply input pin. This pad
needs to be bypassed with a 0.1uF
capacitor to ground, placed as close as
possible to the USB332x.
TABLE 2-1:
USB332X PIN DESCRIPTION (CONTINUED)
Ball
Name
Direction/
Type
Active
Level
Description
USB332x
DS00001902A-page 8
2008 - 2015 Microchip Technology Inc.
B2
RESETB
Input,
CMOS,
Low
When low, the part is suspended with all
ULPI outputs tri-stated. When high, the
USB332x will operate as a normal ULPI
device, as described in
Section 5.5.2
. The
state of this pin may be changed
asynchronously to the clock signals. When
asserted for a minimum of 1 microsecond
and then de-asserted, the ULPI registers
are reset to their default state and all
internal state machines are reset.
A2
REFCLK
Input,
CMOS
N/A
ULPI Clock Out Mode:
Model-specific reference clock.
See
Product Identification System on page
68
ULPI Clock In Mode:
60MHz ULPI clock input.
A1
RBIAS
Analog,
CMOS
N/A
Bias Resistor pin. This pin requires an
8.06kΩ (±1%) resistor to ground, placed as
close as possible to the USB332x.
Nominal voltage during ULPI operation is
0.8V.
C3
GND
Ground
N/A
Ground.
TABLE 2-1:
USB332X PIN DESCRIPTION (CONTINUED)
Ball
Name
Direction/
Type
Active
Level
Description
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 9
USB332x
3.0
LIMITING VALUES
3.1
Absolute Maximum Ratings
3.2
Recommended Operating Conditions
TABLE 3-1:
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Conditions
MIN
TYP MAX Units
VBUS
, VBAT, ID, DP, DM,
SPK_L
, and SPK_R
voltage to GND
V
MAX_5V
Voltage measured at pin.
VBUS
tolerant to 30V with
external R
VBUS
.
-0.5
+6.0
V
Maximum VDD18 voltage
to Ground
V
MAX_18V
-0.5
2.5
V
Maximum VDD33 voltage
to Ground
V
MAX_33V
-0.5
4.0
V
Maximum I/O voltage to
Ground
V
MAX_IN
-0.5
V
DD18
+ 0.7
V
Operating Temperature
T
MAX_OP
-40
85
C
Storage Temperature
T
MAX_STG
-55
150
C
Note:
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
TABLE 3-2:
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Conditions
MIN
TYP MAX
Units
VBAT
to GND
V
VBAT
3.1
5.5
V
VDD33
to GND
V
DD33
3.0
3.3
3.6
V
VDD18
to GND
V
DD18
1.6
1.8
2.0
V
Input Voltage on Digital
Pins (RESETB, STP, DIR,
NXT
, DATA[7:0])
V
I
0.0
V
DD18
V
Voltage on Analog I/O
Pins (DP, DM, ID, SPK_L,
SPK_R
)
V
I(I/O)
0.0
V
DD33
V
VBUS
to GND
V
VMAX
0.0
5.5
Ambient Temperature
T
A
-40
85
C
USB332x
DS00001902A-page 10
2008 - 2015 Microchip Technology Inc.
4.0
ELECTRICAL CHARACTERISTICS
The following conditions are assumed unless otherwise specified:
V
VBAT
= 3.1 to 5.5V; V
DD18
= 1.6 to 2.0V; V
SS
= 0V; T
A
= -40C to +85C
The current for 3.3V circuits is sourced at the VBAT pin, except when using an external 3.3V supply as shown in
Figure 5-6
.
4.1
Operating Current
Note 4-1
ClockSuspendM
bit = 0.
Note 4-2
SessEnd, VbusVld, and IdFloat comparators disabled. STP Interface protection disabled.
TABLE 4-1:
OPERATING CURRENT
Parameter
Symbol
Conditions
MIN
TYP MAX Units
Synchronous Mode Current
(Default Configuration)
I
33AVG(SYNC)
Start-up sequence defined in
Section 5.5.4
has
completed.
5
5.7
5.9
mA
I
18AVG(SYNC)
19
22.6
27.5
mA
Synchronous Mode Current
(HS USB operation)
I
33AVG(HS)
Active USB Transfer
10
11.5
13.5
mA
I
18AVG(HS)
28
33.6
37
mA
Synchronous Mode Current
(FS/LS USB operation)
I
33AVG(FS)
Active USB Transfer
10
10.5
11.3
mA
I
18AVG(FS)
23
27.2
29.4
mA
Serial Mode Current
(FS/LS USB)
Note 4-1
I
33AVG(FS_S)
5
5.7
5.9
mA
I
18AVG(FS_S)
2
2.9
3.9
mA
USB UART Current
Note 4-1
I
33AVG(UART)
5
5.7
5.9
mA
I
18AVG(UART)
2
2.9
3.9
mA
USB Audio Mode
I
33AVG(AUDIO)
V
VBAT
= 4.2V
V
DD18
= 1.8V
17
22
32.3
uA
I
18AVG(AUDIO)
30
36.3
60
uA
Low Power Mode
Note 4-2
I
DD33(LPM)
V
VBAT
= 4.2V
V
DD18
= 1.8V
17
22.1
34
uA
I
DD18(LPM)
1.2
32
uA
Standby Mode
I
DD33(RSTB)
RESETB = 0
V
VBAT
= 4.2V
V
DD18
= 1.8V
17
20.8
34
uA
I
DD18(RSTB)
0.9
32
uA
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 1
Highlights
• Integrated ESD protection circuits
- Up to ±15kV IEC Air Discharge without exter-
nal devices
• Over-Voltage Protection circuit (OVP) protects the
VBUS pin from continuous DC voltages up to 30V
• Integrated USB Switch
- No degradation of Hi-Speed electrical char-
acteristics
- Allows single USB port of connection by pro-
viding switching function for:
- Battery charging
- Stereo and mono/mic audio
- USB Full-Speed/Low-Speed data
• flexPWR
®
Technology
- Low current design ideal for battery powered
applications
- “Sleep” mode tri-states all ULPI pins and
places the part in a low current state
- 1.8V IO Voltage (±10%)
• Integrated battery to 3.3V LDO regulator
- 2.2uF bypass capacitor
- 100mV dropout voltage
• “Wrapper-less” design for optimal timing perfor-
mance and design ease
- Low Latency Hi-Speed Receiver (43 Hi-
Speed clocks Max) allows use of legacy
UTMI Links with a ULPI bridge
• External Reference Clock operation
- ULPI Input Clock Mode (60MHz sourced by
Link)
- 0 to 3.6V input drive tolerant
- Able to accept “noisy” clock sources as refer-
ence to internal, low-jitter PLL
- Frequencies: 12, 13, 19.2, 26, or 27MHz
• Smart detection circuits allow identification of
USB charger, headset, or data cable insertion
• Includes full support for the optional On-The-Go
(OTG) protocol detailed in the On-The-Go Sup-
plement Revision 2.0 specification
• Supports the OTG Host Negotiation Protocol
(HNP) and Session Request Protocol (SRP)
• UART mode for non-USB serial data transfers
• Internal 5V cable short-circuit protection of ID, DP
and DM lines to VBUS or ground
• Industrial Operating Temperature -40
°C to +85°C
• 25-ball WLCSP RoHS compliant package;
(2.0 x 2.0 x 0.53mm height)
Applications
The USB332x is targeted for any application where a
Hi-Speed USB connection is desired and when board
space, power, and interface pins must be minimized.
The USB332x is well suited for:
• Cell Phones
• PDAs
• MP3 Players
• GPS Personal Navigation Devices
• Datacards
• Scanners
• External Hard Drives
• Digital Still and Video Cameras
• Portable Media Players
• Entertainment Devices
• Printers
• HDTVs
• Set Top Boxes/DVR/PVR
• Video Record/Playback Systems
• IP and Video Phones
• Gaming Consoles
• POS Terminals
USB332x
Industry’s Smallest Hi-Speed USB Transceiver with 1.8V
ULPI Interface
USB332x
DS00001902A-page 2
2008 - 2015 Microchip Technology Inc.
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and
enhanced as new volumes and updates are introduced.
If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via
E-mail at
docerrors@microchip.com
. We welcome your feedback.
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for cur-
rent devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the
revision of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
• Microchip’s Worldwide Web site;
http://www.microchip.com
• Your local Microchip sales office (see last page)
When contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature number) you are
using.
Customer Notification System
Register on our web site at
www.microchip.com
to receive the most current information on all of our products.
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 3
USB332x
Table of Contents
1.0 Introduction ..................................................................................................................................................................................... 4
2.0 USB332x Pin Locations and Definitions ......................................................................................................................................... 6
3.0 Limiting Values ................................................................................................................................................................................ 9
4.0 Electrical Characteristics ............................................................................................................................................................... 10
5.0 Architecture Overview ................................................................................................................................................................... 16
6.0 ULPI Operation ............................................................................................................................................................................. 30
7.0 ULPI Register Map ........................................................................................................................................................................ 46
8.0 Application Notes .......................................................................................................................................................................... 56
9.0 Package Outline, Tape & Reel Drawings, Package Marking ........................................................................................................ 60
Appendix A: Revision History .............................................................................................................................................................. 65
The Microchip Web Site ...................................................................................................................................................................... 67
Customer Change Notification Service ............................................................................................................................................... 67
Customer Support ............................................................................................................................................................................... 67
Product Identification System ............................................................................................................................................................. 68
USB332x
DS00001902A-page 4
2008 - 2015 Microchip Technology Inc.
1.0
INTRODUCTION
Microchip’s USB332x is a family of Hi-Speed USB 2.0 Transceivers that provides a physical layer (PHY) solution well-
suited for portable electronic devices. Both commercial and industrial temperature applications are supported.
Each model in the USB332x family may use a 60MHz reference clock, or the model-number specific reference clock
shown in
Product Identification System on page 68
.
Several advanced features make the USB332x the transceiver of choice by reducing both electrical bill of material
(eBOM) part count and printed circuit board (PCB) area. Outstanding ESD robustness eliminates the need for external
ESD protection devices in typical applications. The internal Over-Voltage Protection circuit (OVP) protects the USB332x
from voltages up to 30V. By using a reference clock from the Link, the USB332x removes the cost of a dedicated crystal
reference from the design. And the integrated USB switch enables unique product features with a single USB port of
connection.
The USB332x meets all of the electrical requirements to be used as a Hi-Speed USB Host, Device, or an On-the-Go
(OTG) transceiver. In addition to the supporting USB signaling, the USB332x also provides USB UART mode and USB
Audio mode.
USB332x uses the industry standard UTMI+ Low Pin Interface (ULPI) to connect the USB PHY to the Link. ULPI uses
a method of in-band signaling and status byte transfers between the Link and PHY to facilitate a USB session with only
12 pins.
The USB332x uses Microchip’s “wrapper-less” technology to implement the ULPI interface. This “wrapper-less” tech-
nology allows the PHY to achieve a low latency transmit and receive time. Microchip’s low latency transceiver allows an
existing UTMI Link to be reused by adding a UTMI to ULPI bridge. By adding a bridge to the ASIC the existing and
proven UTMI Link IP can be reused.
The USB332x includes an integrated 3.3V Low Drop Out (LDO) linear voltage regulator that may optionally be used to
generate 3.3V from power applied at the VBAT pin. The voltage on the VBAT pin can range from 3.1 to 5.5V. The reg-
ulator dropout voltage is less than 100mV which allows the PHY to continue USB signaling when the voltage on VBAT
drops to 3.1V. The USB transceiver will continue to operate at lower voltages, although some parameters may be out-
side the limits of the USB specifications. If the user would like to provide a 3.3V supply to the USB332x, the VBAT and
VDD33
pins should be connected together as described in
Section 5.5.1
.
FIGURE 1-1:
USB332X BLOCK DIAGRAM
OTG
USB
DP/DM
Switch
Hi-Speed
USB
Transceiver
ULPI
Interface
ULPI
Registers
and State
Machine
BIAS
Low Jitter
Integrated
PLL
Integrated
Power
Management
VBUS
ID
DP
DM
RBIAS
E
S
D Protection
SP
K
_
L
SPK
_R
REFCLK
DATA[7:0]
RESETB
VDD18
VDD33
VBAT
DIR
NXT
STP
CLKOUT
OVP
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 5
USB332x
The USB332x also includes integrated pull-up resistors that can be used for detecting the attachment of a USB Charger.
By sensing the attachment to a USB Charger, a product using the USB332x can charge its battery at more than the
500mA allowed when charging from a USB Host as described in
Section 8.2
.
In USB UART mode, the USB332x DP and DM pins are redefined to enable pass-through of asynchronous serial data.
The USB332x can only enter UART mode when the user programs the part into this mode, as described in
Section 6.5.1
.
In USB audio mode, a switch connects the DP pin to the SPK_R pin, and another switch connects he DM pin to the
SPK_L
pin. These switches are shown in the lower left-hand corner of
Figure 5-1
. The USB332x can be configured to
enter USB audio mode as described in
Section 6.5.2
. In addition, these switches are on when the RESETB pin of the
USB332x is asserted. The USB audio mode enables audio signaling from a single USB port of connection, and the
switches may also be used to connect Full Speed USB from another PHY onto the USB cable.
1.1
Reference Documents
• Universal Serial Bus Specification, Revision 2.0, April 27, 2000
• On-The-Go Supplement to the USB 2.0 Specification, Revision 2.0, May 8, 2009
• 27% Resistor ECN
• USB 2.0 Transceiver Macrocell Interface (UTMI) Specification, Version 1.12, May 27, 2000
• UTMI+ Specification, Revision 1.1, February 25, 2004
• UTMI+ Low Pin Interface (ULPI) Specification, Revision 1.1, October 20th, 2004
• Technical Requirements and Test Methods of Charger and Interface for Mobile Telecommunication Terminal
Equipment (Chinese Charger Specification Approval Draft 11/29/2006)
USB332x
DS00001902A-page 6
2008 - 2015 Microchip Technology Inc.
2.0
USB332X PIN LOCATIONS AND DEFINITIONS
2.1
USB332x
Ball Locations and Descriptions
2.1.1
PACKAGE DIAGRAM WITH BALL LOCATIONS
The illustration below is viewed from the top of the package.
2.1.2
BALL DEFINITIONS
The following table details the ball definitions for the figure above.
FIGURE 2-1:
USB332X BALL LOCATIONS - TOP VIEW
TABLE 2-1:
USB332X PIN DESCRIPTION
Ball
Name
Direction/
Type
Active
Level
Description
B1
ID
Input,
Analog
N/A
ID
pin of the USB cable. For applications
not using ID this pin can be connected to
VDD33
. For an A-Device ID is grounded.
For a B-Device ID is floated.
C2
VBUS
I/O,
Analog
N/A
This pin connects to an external resistor
(R
VBUS
) connected to the VBUS pin of the
USB cable. This pin is used for the VBUS
comparator inputs and for VBUS pulsing
during session request protocol. See
Table 5-6, "Required RVBUS Resistor
Value"
.
C1
VBAT
Power
N/A
Regulator input.
D2
VDD33
Power
N/A
3.3V Regulator Output. A 2.2uF (<1 ohm
ESR) bypass capacitor to ground is
required for regulator stability. The bypass
capacitor should be placed as close as
possible to the USB332x.
D1
DM
I/O,
Analog
N/A
D- pin of the USB cable.
A
E
D
C
B
1
5
4
3
2
TOP VIEW
RESETB
ID
VBUS
VBAT
VDD33
DM
DP
SPK_R
SPK_L
DATA[7]
DATA[4]
DATA[6]
DATA[5]
CLKOUT
DATA[3]
DATA[2]
DATA[1]
DATA[0]
NXT
DIR
STP
VDD18
REFCLK
RBIAS
GND
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 7
USB332x
E1
DP
I/O,
Analog
N/A
D+ pin of the USB cable.
E2
SPK_R
I/O,
Analog
N/A
USB switch in/out for DP signals
E3
SPK_L
I/O,
Analog
N/A
USB switch in/out for DM signals
D3
DATA[7]
I/O,
CMOS
N/A
ULPI bi-directional data bus. DATA[7] is
the MSB.
E4
DATA[6]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
E5
DATA[5]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
D4
DATA[4]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
A5
CLKOUT
Output,
CMOS
N/A
ULPI Clock Out Mode:
60MHz ULPI clock output. All ULPI signals
are driven synchronous to the rising edge
of this clock.
ULPI Clock In Mode:
This pin is connected to VDD18 to
configure 60MHz ULPI Clock IN mode as
described in
Section 5.4.1
.
D5
DATA[3]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
C4
DATA[2]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
C5
DATA[1]
I/O,
CMOS
N/A
ULPI bi-directional data bus.
B4
DATA[0]
I/O,
CMOS
N/A
ULPI bi-directional data bus. DATA[0] is
the LSB.
B5
NXT
Output,
CMOS
High
The PHY asserts NXT to throttle the data.
When the Link is sending data to the PHY,
NXT
indicates when the current byte has
been accepted by the PHY. The Link
places the next byte on the data bus in the
following clock cycle.
A4
DIR
Output,
CMOS
N/A
Controls the direction of the data bus.
When the PHY has data to transfer to the
Link, it drives DIR high to take ownership
of the bus. When the PHY has no data to
transfer it drives DIR low and monitors the
bus for commands from the Link.
A3
STP
Input,
CMOS
High
The Link asserts STP for one clock cycle
to stop the data stream currently on the
bus. If the Link is sending data to the PHY,
STP
indicates the last byte of data was on
the bus in the previous cycle.
B3
VDD18
Power
N/A
External 1.8V Supply input pin. This pad
needs to be bypassed with a 0.1uF
capacitor to ground, placed as close as
possible to the USB332x.
TABLE 2-1:
USB332X PIN DESCRIPTION (CONTINUED)
Ball
Name
Direction/
Type
Active
Level
Description
USB332x
DS00001902A-page 8
2008 - 2015 Microchip Technology Inc.
B2
RESETB
Input,
CMOS,
Low
When low, the part is suspended with all
ULPI outputs tri-stated. When high, the
USB332x will operate as a normal ULPI
device, as described in
Section 5.5.2
. The
state of this pin may be changed
asynchronously to the clock signals. When
asserted for a minimum of 1 microsecond
and then de-asserted, the ULPI registers
are reset to their default state and all
internal state machines are reset.
A2
REFCLK
Input,
CMOS
N/A
ULPI Clock Out Mode:
Model-specific reference clock.
See
Product Identification System on page
68
ULPI Clock In Mode:
60MHz ULPI clock input.
A1
RBIAS
Analog,
CMOS
N/A
Bias Resistor pin. This pin requires an
8.06kΩ (±1%) resistor to ground, placed as
close as possible to the USB332x.
Nominal voltage during ULPI operation is
0.8V.
C3
GND
Ground
N/A
Ground.
TABLE 2-1:
USB332X PIN DESCRIPTION (CONTINUED)
Ball
Name
Direction/
Type
Active
Level
Description
2008 - 2015 Microchip Technology Inc.
DS00001902A-page 9
USB332x
3.0
LIMITING VALUES
3.1
Absolute Maximum Ratings
3.2
Recommended Operating Conditions
TABLE 3-1:
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Conditions
MIN
TYP MAX Units
VBUS
, VBAT, ID, DP, DM,
SPK_L
, and SPK_R
voltage to GND
V
MAX_5V
Voltage measured at pin.
VBUS
tolerant to 30V with
external R
VBUS
.
-0.5
+6.0
V
Maximum VDD18 voltage
to Ground
V
MAX_18V
-0.5
2.5
V
Maximum VDD33 voltage
to Ground
V
MAX_33V
-0.5
4.0
V
Maximum I/O voltage to
Ground
V
MAX_IN
-0.5
V
DD18
+ 0.7
V
Operating Temperature
T
MAX_OP
-40
85
C
Storage Temperature
T
MAX_STG
-55
150
C
Note:
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
TABLE 3-2:
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Conditions
MIN
TYP MAX
Units
VBAT
to GND
V
VBAT
3.1
5.5
V
VDD33
to GND
V
DD33
3.0
3.3
3.6
V
VDD18
to GND
V
DD18
1.6
1.8
2.0
V
Input Voltage on Digital
Pins (RESETB, STP, DIR,
NXT
, DATA[7:0])
V
I
0.0
V
DD18
V
Voltage on Analog I/O
Pins (DP, DM, ID, SPK_L,
SPK_R
)
V
I(I/O)
0.0
V
DD33
V
VBUS
to GND
V
VMAX
0.0
5.5
Ambient Temperature
T
A
-40
85
C
USB332x
DS00001902A-page 10
2008 - 2015 Microchip Technology Inc.
4.0
ELECTRICAL CHARACTERISTICS
The following conditions are assumed unless otherwise specified:
V
VBAT
= 3.1 to 5.5V; V
DD18
= 1.6 to 2.0V; V
SS
= 0V; T
A
= -40C to +85C
The current for 3.3V circuits is sourced at the VBAT pin, except when using an external 3.3V supply as shown in
Figure 5-6
.
4.1
Operating Current
Note 4-1
ClockSuspendM
bit = 0.
Note 4-2
SessEnd, VbusVld, and IdFloat comparators disabled. STP Interface protection disabled.
TABLE 4-1:
OPERATING CURRENT
Parameter
Symbol
Conditions
MIN
TYP MAX Units
Synchronous Mode Current
(Default Configuration)
I
33AVG(SYNC)
Start-up sequence defined in
Section 5.5.4
has
completed.
5
5.7
5.9
mA
I
18AVG(SYNC)
19
22.6
27.5
mA
Synchronous Mode Current
(HS USB operation)
I
33AVG(HS)
Active USB Transfer
10
11.5
13.5
mA
I
18AVG(HS)
28
33.6
37
mA
Synchronous Mode Current
(FS/LS USB operation)
I
33AVG(FS)
Active USB Transfer
10
10.5
11.3
mA
I
18AVG(FS)
23
27.2
29.4
mA
Serial Mode Current
(FS/LS USB)
Note 4-1
I
33AVG(FS_S)
5
5.7
5.9
mA
I
18AVG(FS_S)
2
2.9
3.9
mA
USB UART Current
Note 4-1
I
33AVG(UART)
5
5.7
5.9
mA
I
18AVG(UART)
2
2.9
3.9
mA
USB Audio Mode
I
33AVG(AUDIO)
V
VBAT
= 4.2V
V
DD18
= 1.8V
17
22
32.3
uA
I
18AVG(AUDIO)
30
36.3
60
uA
Low Power Mode
Note 4-2
I
DD33(LPM)
V
VBAT
= 4.2V
V
DD18
= 1.8V
17
22.1
34
uA
I
DD18(LPM)
1.2
32
uA
Standby Mode
I
DD33(RSTB)
RESETB = 0
V
VBAT
= 4.2V
V
DD18
= 1.8V
17
20.8
34
uA
I
DD18(RSTB)
0.9
32
uA