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TUSB4041I
SLLSEK3E – JULY 2015 – REVISED SEPTEMBER 2017
TUSB4041I Four-Port USB 2.0 Hub
1 Features
•
•
1
•
•
•
•
•
•
•
•
•
•
Four Port USB 2.0 Hub
USB 2.0 Hub Features
– Multi Transaction Translator (MTT) Hub: Four
Transaction Translators
– Four Asynchronous Endpoint Buffers per
Transaction Translator
Supports USB Battery Charging
– CDP Mode (Upstream Port Connected)
– DCP Mode (Upstream Port Unconnected)
– DCP Mode Complies With Chinese
Telecommunications Industry Standard YD/T
1591-2009
– Supports D+ and D– Divider Mode
Per Port or Ganged Power Switching and
Overcurrent Notification Inputs
OTP ROM, Serial EEPROM or I2C and SMBus
Slave Interface for Custom Configurations:
– VID and PID
– Customizable Ports
– Manufacturer and Product Strings (not by OTP
ROM)
– Serial Number (not by OTP ROM)
Application Feature Selection Using Pin Selection
or EEPROM, I2C, or SMBus Slave Interface
Provides 128-Bit Universally Unique Identifier
(UUID)
Supports On-Board and In-System OTP and
EEPROM Programming Through the USB 2.0
Upstream Port
Single Clock Input, 24-MHz Crystal or Oscillator
•
DM/DP Polarity Swap
Type C Compatible
No Special Driver Requirements; Works
Seamlessly on any Operating System With USB
Stack Support
64-Pin HTQFP Package (PAP)
2 Applications
•
•
•
•
Computer Systems
Docking Stations
Monitors
Set-Top Boxes
3 Description
The TUSB4041I device is a four-port USB 2.0 hub.
The device provides USB high-speed or full-speed
connections on the upstream port. The device also
provides USB high-speed, full-speed, or low-speed
connections on the downstream ports. When the
upstream port is connected to an electrical
environment that only supports high-speed, fullspeed, and low-speed connections, the USB highspeed, full-speed and low-speed connectivity is
enabled on the downstream ports. When the
upstream port is connected to an electrical
environment that only supports full-speed or lowspeed connections, the USB high-speed connectivity
are disabled on the downstream ports.
Device Information(1)
PART NUMBER
TUSB4041I
PACKAGE
HTQFP (64)
BODY SIZE (NOM)
10.00 mm × 10.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Type A
Port
USB2
WebCAM
Personal
Computer
TUSB4041I
USB 1.1
Mouse
TI
USB 1.1
Keyboard
USB 2.0 Connection
USB 2.0 Hub
USB 2.0 Device
USB 1.x Connection
USB 2.0 Port
USB 1.1 Device
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
TUSB4041I
SLLSEK3E – JULY 2015 – REVISED SEPTEMBER 2017
www.ti.com
Table of Contents
1
2
3
4
5
6
7
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Description (continued).........................................
Pin Configuration and Functions .........................
Specifications.........................................................
7.1
7.2
7.3
7.4
7.5
7.6
7.7
8
1
1
1
2
3
4
8
Absolute Maximum Ratings ...................................... 8
ESD Ratings ............................................................ 8
Recommended Operating Conditions....................... 9
Thermal Information .................................................. 9
3.3-V I/O Electrical Characteristics ........................... 9
Power-Up Timing Requirements............................. 10
Hub Input Supply Current ....................................... 10
Detailed Description ............................................ 11
8.1
8.2
8.3
8.4
Overview .................................................................
Functional Block Diagram .......................................
Feature Description.................................................
Device Functional Modes........................................
11
11
12
15
8.5 Register Maps ......................................................... 16
9
Application and Implementation ........................ 29
9.1 Application Information............................................ 29
9.2 Typical Application .................................................. 29
10 Power Supply Recommendations ..................... 36
10.1 TUSB4041I Power Supply .................................... 36
10.2 Downstream Port Power ....................................... 36
10.3 Ground .................................................................. 36
11 Layout................................................................... 37
11.1 Layout Guidelines ................................................. 37
11.2 Layout Example .................................................... 38
12 Device and Documentation Support ................. 39
12.1
12.2
12.3
12.4
12.5
12.6
Documentation Support ........................................
Receiving Notification of Documentation Updates
Community Resource............................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
39
39
39
39
39
39
13 Mechanical, Packaging, and Orderable
Information ........................................................... 39
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (July 2017) to Revision E
•
Changed smbusRst From: Bit 6 To: Bit 1, and cfgActive1 From: Bit 5 To: Bit 0 Table 25 ................................................. 28
Changes from Revision C (September 2016) to Revision D
•
Page
Page
Deleted paragraph: "Each bit corresponds directly to a downstream port. For example: used0 corresponds to
downstream port 1, used1 corresponds to downstream port 2, and so on. All combinations are supported with the
exception of both ports 1 and 3 marked as disabled." from Table 12 .................................................................................. 21
Changes from Revision B (December 2015) to Revision C
Page
•
Added SMBUS Programming current to Hub Input Supply Current .................................................................................... 10
•
Added NOTE to the SMBus Slave Operation section ......................................................................................................... 15
•
Added text "This device will always report the XORed PID LSB value of 0x42" to the Description of Table 7 .................. 18
Changes from Revision A (September 2015) to Revision B
•
Changed the configuration of the PWRCTL_POL pin (R17) in the Clock, Reset, and Miscellaneous section .................... 34
Changes from Original (July 2015) to Revision A
•
2
Page
Page
Changed pin number for USB_DP_DN1 and USB_DP_DN2 in the Pin Functions table ...................................................... 6
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SLLSEK3E – JULY 2015 – REVISED SEPTEMBER 2017
5 Description (continued)
The TUSB4041I device supports per-port or ganged power switching and overcurrent protection. The device also
supports battery charging applications.
An individually port-power-controlled hub switches power on or off to each downstream port as requested by the
USB host. Also when an individually port-power-controlled hub senses an overcurrent event, only power to the
affected downstream port is switched off.
A ganged hub switches on power to all of the downstream ports when power is required to be on for any port.
The power to the downstream ports is not switched off unless all ports are in a state that allows power to be
removed. Also, when a ganged hub senses an overcurrent event, power to all downstream ports are switched
off.
The TUSB4041I device downstream ports provide support for battery charging applications by providing USB
battery charging downstream-port (CDP) handshaking support. The device also supports a dedicated chargingport (DCP) mode when the upstream port is not connected. The DCP mode is compliant with the USB battery
charging specification and Chinese Telecommunications Industry Standard YD/T 1591-2009. Also, an automatic
mode provides transparent support for BC devices and devices supporting divider-mode charging solutions when
the upstream port unconnected.
The TUSB4041I device provides pin-strap configuration for some features including battery charging support,
and also provides customization though OTP ROM, I2C EEPROM, or through an I2C and SMBus slave interface
for PID, VID, and custom port and phy configurations. Custom string support is also available when using an I2C
EEPROM or the I2C and SMBus slave interface.
The device is available in a 64-pin PAP package and is offered in a industrial version for operation over the
temperature range of –40°C to 85°C.
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SLLSEK3E – JULY 2015 – REVISED SEPTEMBER 2017
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6 Pin Configuration and Functions
USB_DM_DN1
USB_DP_DN1
RSVD
RSVD
VDD
RSVD
NC
RSVD
USB_DP_DN2
USB_DM_DN2
RSVD
RSVD
VDD
RSVD
RSVD
VDD33
PAP Package
64-Pin HTQFP With PowerPAD™
Top View
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
USB_DP_DN3
49
32
USB_DM_DN3
50
31
USB_R1
VDD33
RSVD
51
30
XI
RSVD
52
29
XO
VDD
53
28
NC
RSVD
54
27
RSVD
RSVD
55
26
RSVD
USB_DM_UP
VDD
60
21
USB_DP_UP
RSVD
20
19
VDD33
RSVD
61
62
VDD
63
18
GRSTz
PWRCTL4/BATEN4
64
17
TEST
8
9 10 11 12 13 14 15 16
VDD
USB_VBUS
7
OVERCUR2z
6
OVERCUR1z
5
AUTOENz/HS_SUSPEND
4
OVERCUR3z
3
OVERCUR4z
2
GANGED/SMBA2/HS_UP
1
PWRCTL_POL
RSVD
22
SMBUSz
23
59
FULLPWRMGMTz/SMBA1
58
RSVD
SCL/SMBCLK
RSVD
SDA/SMBDAT
RSVD
PWRCTL1/BATEN1
VDD
24
PWRCTL2/BATEN2
25
57
VDD33
56
PWRCTL3/BATEN3
USB_DP_DN4
USB_DM_DN4
NC = No internal connection
Pin Functions
PIN
NAME
NO.
I/O (1)
TYPE (1)
DESCRIPTION
CLOCK AND RESET SIGNALS
GRSTz
18
I
PU
Global power reset. This reset brings all of the TUSB4041I device internal registers to
the default state. When the GRSTz pin is asserted, the device is completely
nonfunctional.
XI
30
I
—
Crystal input. This pin is the crystal input for the internal oscillator. The input may
alternately be driven by the output of an external oscillator. When using a crystal, a 1MΩ feedback resistor is required between the XI and XO pins.
(1)
4
I = Input, O = Output, I/O = Input/output, PU = Internal pullup resistor, PD = Internal pulldown resistor, and PWR = Power signal
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Pin Functions (continued)
PIN
NAME
XO
NO.
29
I/O (1)
TYPE (1)
O
—
Crystal output. This pin is the crystal output for the internal oscillator. If the XI pin is
driven by an external oscillator, this pin may be left unconnected. When using a
crystal, a 1-MΩ feedback resistor is required between the XI and XO pins.
DESCRIPTION
USB UPSTREAM SIGNALS
USB_DM_UP
22
I/O
—
USB high-speed differential transceiver (negative)
USB_DP_UP
21
I/O
—
USB high-speed differential transceiver (positive)
I
—
Precision resistor reference. Connect a 9.53-kΩ ±1% resistor between the USB_R1
pin and ground.
I
—
USB upstream port power monitor. The VBUS detection requires a voltage divider.
The signal USB_VBUS must be connected to VBUS through a 90.9-kΩ ±1% resistor
and to ground through a 10-kΩ ±1% resistor from the signal to ground.
USB_R1
32
USB_VBUS
16
USB DOWNSTREAM SIGNALS
USB port 1 overcurrent detection. This pin is used to connect the overcurrent output
of the downstream port power switch for port 1.
0 = An overcurrent event occurred.
OVERCUR1z
14
I
PU
1 = An overcurrent event has not occurred.
This pin can be left unconnected if power management is not implemented. If power
management is enabled, the necessary external circuitry should be determined by the
power switch.
USB port 2 overcurrent detection. This pin is used to connect the overcurrent output
of the downstream port power switch for port 2.
0 = An overcurrent event occurred.
OVERCUR2z
15
I
PU
1 = An overcurrent event has not occurred.
If power management is not implemented, leave this pin unconnected. If power
management is enabled, the necessary external circuitry should be determined by the
power switch.
USB port 3 overcurrent detection. This pin is used to connect the overcurrent output
of the downstream port power switch for port 3.
0 = An overcurrent event occurred.
OVERCUR3z
12
I
PU
1 = An overcurrent event has not occurred.
This pin can be left unconnected if power management is not implemented. If power
management is enabled, the necessary external circuitry should be determined by the
power switch.
USB port 4 overcurrent detection. This pin is used to connect the overcurrent output
of the downstream port power switch for port 4.
0 = An overcurrent event occurred.
OVERCUR4z
11
I
PU
1 = An overcurrent event has not occurred.
This pin can be left unconnected if power management is not implemented. If power
management is enabled, the necessary external circuitry should be determined by the
power switch.
USB port 1 power-on control for downstream power and battery charging enable. The
pin is used for control of the downstream power switch for port 1.
PWRCTL1/BATEN1
4
I/O
PD
The value of the pin is sampled at the deassertion of reset to determine the value of
the battery charging support for port 1 as indicated in the Battery Charging Support
Register:
0 = Battery charging not supported
1 = Battery charging supported
USB port 2 power-on control for downstream power and battery charging enable. The
pin is used for control of the downstream power switch for port 2.
PWRCTL2/BATEN2
3
I/O
PD
The value of the pin is sampled at the deassertion of reset to determine the value of
the battery charging support for Port 2 as indicated in the Battery Charging Support
Register:
0 = Battery charging not supported
1 = Battery charging supported
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Pin Functions (continued)
PIN
NAME
NO.
I/O (1)
TYPE (1)
DESCRIPTION
USB port 3 power-on control for downstream power and battery charging enable. The
pin is used for control of the downstream power switch for port 3.
PWRCTL3/BATEN3
1
I/O
PD
The value of the pin is sampled at the deassertion of reset to determine the value of
the battery charging support for Port 3 as indicated in the Battery Charging Support
Register:
0 = Battery charging not supported
1 = Battery charging supported
USB port 4 power-on control for downstream power and battery charging enable. The
pin is used for control of the downstream power switch for port 4.
PWRCTL4/BATEN4
64
I/O
PD
The value of the pin is sampled at the deassertion of reset to determine the value of
the battery charging support for Port 4 as indicated in the Battery Charging Support
Register:
0 = Battery charging not supported
1 = Battery charging supported
USB_DM_DN1
34
USB_DM_DN2
42
USB_DM_DN3
50
USB_DM_DN4
57
USB_DP_DN1
33
USB_DP_DN2
41
USB_DP_DN3
49
USB_DP_DN4
56
I/O
—
USB high-speed differential transceiver (negative)
I/O
—
USB high-speed differential transceiver (positive)
I2C AND SMBus SIGNALS
I2C clock/SMBus clock. The function of this pin depends on the setting of the
SMBUSz input.
SCL/SMBCLK
6
I/O
PD
When SMBUSz = 1, this pin functions as the serial clock interface for an I2C
EEPROM.
When SMBUSz = 0, this pin functions as the serial clock interface for an SMBus
host.
This pin can be left unconnected if external interface not implemented.
I2C data/SMBus data. The function of this pin depends on the setting of the SMBUSz
input.
SDA/SMBDAT
5
I/O
PD
When SMBUSz = 1, this pin functions as the serial data interface for an I2C
EEPROM.
When SMBUSz = 0, this pin functions as the serial data interface for an SMBus
host.
This pin can be left unconnected if the external interface is not implemented.
I2C/SMBus mode select. The value of the pin is sampled at the deassertion of reset
set I2C or SMBus mode as follows:
1 = I2C mode selected
SMBUSz
7
I/O
PU
0 = SMBus mode selected
This pin can be left unconnected if the external interface is not implemented.
After reset, this signal is driven low by the TUSB4041I. Because of this behavior, TI
recommends not to tie directly to supply, but instead pull up or pull down using
external resistor.
6
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Pin Functions (continued)
PIN
NAME
NO.
I/O (1)
TYPE (1)
DESCRIPTION
TEST AND MISCELLANEOUS SIGNALS
Automatic charge mode enable/HS suspend status
The value of the pin is sampled at the deassertion of reset to determine if automatic
mode is enabled as follows:
AUTOENz/
HS_SUSPEND
13
I/O
PU
0 = Automatic mode is enabled on ports that are enabled for battery charging when
the hub is unconnected. Note that CDP is not supported on port 1 when operating
in automatic mode.
1 = Automatic mode is disabled.
This value is also used to set the autoEnz bit in the Battery Charging Support
Register.
After reset, this signal indicates the high-speed USB Suspend status of the upstream
port if enabled through the Additional Feature Configuration Register. When enabled,
a value of 1 indicates the connection is suspended.
Full power management enable/SMBus address bit 1
The value of the pin is sampled at the deassertion of reset to set the power switch
control follows:
0 = Power switching and overcurrent inputs supported
1 = Power switching and overcurrent inputs not supported
FULLPWRMGMTz/
SMBA1
Full power management is the ability to control power to the downstream ports of the
TUSB4041I device using PWRCTL[4:1]/BATEN[4:1].
8
I/O
PD
When SMBus mode is enabled using SMBUSz, this pin sets the value of the SMBus
slave address bit 1.
This pin can be left unconnected if full power management and SMBus are not
implemented.
After reset, this signal is driven low by the TUSB4041I. Because of this behavior, TI
recommends not to tie directly to supply, but instead pull up or pull down using an
external resistor.
Note: Power switching must be supported for battery charging applications.
Ganged operation enable/SMBus address bit 2/HS connection status upstream port
The value of the pin is sampled at the deassertion of reset to set the power switch
and overcurrent detection mode as follows:
0 = Individual power control supported when power switching is enabled
1 = Power control gangs supported when power switching is enabled
GANGED/SMBA2/
HS_UP
10
I/O
PD
When SMBus mode is enabled using SMBUSz, this pin sets the value of the SMBus
slave address bit 2.
After reset, this signal indicates the high-speed USB connection status of the
upstream port if enabled through the Additional Feature Configuration Register. When
enabled, a value of 1 indicates the upstream port is connected to a high-speed USB
capable port.
Note: Individual power control must be enabled for battery charging applications.
Power control polarity.
PWRCTL_POL
9
I/O
PU
The value of the pin is sampled at the deassertion of reset to set the polarity of
PWRCTL[4:1].
0 = PWRCTL polarity is active low
1 = PWRCTL polarity is active high
RSVD
23, 24,
26, 27,
35, 36,
38, 39,
43, 44,
46, 47,
51, 52,
54, 55,
58, 59,
61, 62
I/O
Reserved. For internal use only and leave unconnected on the PCB.
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Pin Functions (continued)
PIN
NAME
NO.
TEST
I/O (1)
TYPE (1)
I
PD
This pin is reserved for factory test.
—
—
No connection, leave floating
—
PWR
1.1-V power rail
—
PWR
3.3-V power rail
—
—
17
DESCRIPTION
POWER AND GROUND SIGNALS
28
NC
40
19
25
37
VDD
45
53
60
63
2
20
VDD33
31
48
Thermal Pad
Ground. The thermal pad must be connected to ground.
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature (unless otherwise noted) (1)
Supply voltage
Voltage
MIN
MAX
UNIT
VDD steady-state supply voltage
–0.3
1.4
V
VDD33 steady-state supply voltage
–0.3
3.8
V
USB_VBUS pin
–0.3
1.4
V
XI pins
–0.3
2.45
V
All other pins
–0.3
3.8
V
–65
150
°C
Storage temperature, Tstg
(1)
Stresses beyond those listed as Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated as Recommended Operating Conditions
is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
7.2 ESD Ratings
VALUE
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001
V(ESD)
(1)
(2)
8
Electrostatic discharge
(1)
Charged-device model (CDM), per JEDEC specification JESD22C101 (2)
UNIT
±4000
±1000
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
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7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
1.1-V supply voltage
0.99
1.1
1.26
V
3.3-V supply voltage
3
3.3
3.6
V
V(USB_VBUS)
Voltage at USB_VBUS pin
0
1.155
V
TA
Operating free-air temperature
–40
85
°C
TJ
Operating junction temperature
–40
105
°C
(1)
VDD33
VDD
(1)
A 1.05-V, 1.1-V, or 1.2-V supply may be used as long as minimum and maximum supply conditions are met.
7.4 Thermal Information
TUSB4041I
THERMAL METRIC (1)
PAP (HTQFP)
UNIT
64 PINS
RθJA
Junction-to-ambient thermal resistance
26.2
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
11.5
°C/W
RθJB
Junction-to-board thermal resistance
10.4
°C/W
ψJT
Junction-to-top characterization parameter
0.2
°C/W
ψJB
Junction-to-board characterization parameter
10.3
°C/W
RθJC(bot)
Junction-to-case (bottom) thermal resistance
0.6
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
7.5 3.3-V I/O Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
VIH
High-level input voltage
OPERATION
(1)
TEST CONDITIONS
VDD33
MIN
TYP
MAX
UNIT
V
2
VDD33
JTAG pins only
0
0.55
Other pins
0
0.8
VIL
Low-level input voltage (1)
VI
Input voltage
0
VDD33
VO
Output voltage (2)
0
VDD33
V
tt
Input transition time (tr and tf)
0
25
ns
Vhys
Input hysteresis (3)
0.13 x VDD33
V
VOH
High-level output voltage
VDD33
IOH = –4 mA
VOL
Low-level output voltage
VDD33
IOL = 4 mA
0.4
V
IOZ
High-impedance, output current (2)
VDD33
VI = 0 to VDD33
±20
µA
IOZ(P)
High-impedance, output current
with internal pullup or pulldown
resistor (4)
VDD33
VI = 0 to VDD33
±250
µA
II
Input current (5)
VDD33
VI = 0 to VDD33
±15
µA
(1)
(2)
(3)
(4)
(5)
VDD33
2.4
V
V
V
Applies to external inputs and bidirectional buffers.
Applies to external outputs and bidirectional buffers.
Applies to GRSTz.
Applies to pins with internal pull-ups and pull-downs.
Applies to external input buffers.
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7.6 Power-Up Timing Requirements
MIN
td1
VDD33 stable before VDD stable (1)
td2
VDD and VDD33 stable before deassertion of GRSTz
tsu_io
Setup for MISC inputs (3) sampled at the deassertion of GRSTz
(3)
MAX
UNIT
ms
3
ms
0.1
µs
thd_io
Hold for MISC inputs
tVDD33_RAMP
VDD33 supply ramp requirements
0.2
100
ms
tVDD_RAMP
VDD supply ramp requirements
0.2
100
ms
(1)
(2)
(3)
sampled at the deassertion of GRSTz
NOM
(2)
See
0.1
µs
An active reset is required if the VDD33 supply is stable before the VDD11 supply. This active Reset shall meet the 3ms power-up delay
counting from both power supplies being stable to the de-assertion of GRSTz.
The VDD33 and VDD have no power-on relationship unless GRSTz is only connected to a capacitor to GND. Then VDD must be stable
minimum of 10 μs before the VDD33.
MISC pins sampled at de-assertion of GRSTz: FULLPWRMGMTz, GANGED, PWRCTL_POL, SMBUSz, BATEN[4:1], and AUTOENz.
td2
GRSTz
VDD33
td1
VDD
tsu_io
thd_io
MISC_IO
Figure 1. Power-Up Timing Requirements
7.7 Hub Input Supply Current
Typical values measured at TA = 25°C
VDD33
VDD
3.3 V
1.1 V
Power on (after reset)
2.3
28
mA
Upstream disconnect
2.3
28
mA
Suspend
2.5
33
mA
2.0 host / 1 HS device
45
63
mA
2.0 host / 4 HS devices
76
86
mA
SMBUS Programming current
79
225
mA
PARAMETER
UNIT
LOW POWER MODES
ACTIVE MODES (US STATE AND DS STATE)
10
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8 Detailed Description
8.1 Overview
The TUSB4041I device is a four-port USB 2.0 hub. The device provides USB high-speed and full-speed
connections on the upstream port and provides USB high-speed, full-speed, or low-speed connections on the
downstream ports. When the upstream port is connected to an electrical environment that only supports highspeed connections. USB high-speed connectivity is enabled on the downstream ports. When the upstream port
is connected to an electrical environment that only supports full-speed and low-speed connections. USB highspeed connectivity is disabled on the downstream ports.
8.2 Functional Block Diagram
USB_VBUS
USB_DM_UP
USB_DP_UP
USB_R1
VDD33
VDD
VSS
VBUS
Detect
Power
Distribution
USB 2.0 Hub
XI
Oscillator
XO
USB_DM_DN4
USB_DP_DN4
USB_DM_DN3
USB_DP_DN3
USB_DM_DN2
USB_DP_DN2
USB_DM_DN1
USB_DP_DN1
GRSTz
Clock
and
Reset
Distribution
TEST
GANGED/SMBA2/HS_UP
FULLPWRMGMTz/SMBA1
PWRCTL_POL
SMBUSz
AUTOENz/HS_SUSPEND
SCL/SMBCLK
Control
Registers
SDA/SMBDAT
OVERCUR1z
PWRCTL1/BATEN1
OVERCUR2z
PWRCTL2/BATEN2
OTP
ROM
GPIO
I2C
SMBUS
OVERCUR3z
PWRCTL3/BATEN3
OVERCUR4z
PWRCTL4/BATEN4
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8.3 Feature Description
8.3.1 Battery Charging Features
The TUSB4041I device provides support for USB battery charging. Battery charging support may be enabled on
a per port basis through the REG_6h(batEn[3:0]).
Battery charging support includes both CDP and DCP modes. The DCP mode is compliant with the Chinese
Telecommunications Industry Standard YD/T 1591-2009.
In addition to standard DCP mode, the TUSB4041I device provides a mode (AUTOMODE), which automatically
provides support for DCP devices and devices that support custom charging indication. When in AUTOMODE,
the port automatically switches between a divider mode and the DCP mode depending on the portable device
connected. The divided mode places a fixed DC voltage on the ports DP and DM signals, which allows some
devices to identify the capabilities of the charger. The default divider mode indicates support for up to 10 W. The
divider mode can be configured to report a legacy current setting (up to 5 W) through
REG_Ah(HiCurAcpModeEn).
The battery charging mode for each port is dependent on the state of Reg_6h(batEn[n]), the status of the VBUS
input, and the state of REG_Ah(autoModeEnz) upstream port as identified in Table 1.
Table 1. TUSB4041I Battery Charging Modes
batEn[n]
VBUS
autoModeEnz
BC MODE PORT x
(x = n + 1)
0
Don’t care
Don’t care
Don’t Care
0
Automode (1) (2)
1
DCP (3) (4)
Don’t care
CDP (3)
1
4 V
(1)
(2)
(3)
(4)
8.3.2
Auto-mode automatically selects divider-mode or DCP mode.
Divider mode can be configured for legacy current mode through register settings.
Attached USB device is USB battery-charging specification revision 1.2 compliant
Chinese Telecommunications Industry Standard YD/T 1591-2009
USB Power Management
The TUSB4041I device can be configured for power-switched applications using either per-port or ganged
power-enable controls and overcurrent status inputs.
Power switch support is enabled by REG_5h(fullPwrMgmtz), and the per-port or ganged mode is configured by
REG_5h(ganged).
The TUSB4041I device supports both active-high and active-low power-enable controls. The PWRCTL[4:1]
polarity is configured by REG_Ah(pwrctlPol).
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8.3.3 One-Time Programmable Configuration
The TUSB4041I device allows device configuration through one-time programmable (OTP) non-volatile memory.
The programming of the OTP is supported using vendor-defined USB device requests. Contact TI for details
using the OTP features
Table 2 lists features that can be configured using the OTP.
Table 2. OTP Configurable Features
CONFIGURATION REGISTER
OFFSET
BIT FIELD
REG_01h
[7:0]
Vendor ID LSB
REG_02h
[7:0]
Vendor ID MSB
REG_03h
[7:0]
Product ID LSB
REG_04h
[7:0]
Product ID MSB
REG_07h
[0]
Port-removable configuration for downstream ports 1. OTP configuration is
inverse of rmbl[3:0], that is 1 = not removable, 0 = removable.
REG_07h
[1]
Port-removable configuration for downstream ports 2. OTP configuration is
inverse of rmbl[3:0], that is 1 = not removable, 0 = removable.
REG_07h
[2]
Port-removable configuration for downstream ports 3. OTP configuration is
inverse of rmbl[3:0], that is 1 = not removable, 0 = removable.
REG_07h
[3]
Port-removable configuration for downstream ports 4. OTP configuration is
inverse of rmbl[3:0], that is 1 = not removable, 0 = removable.
REG_0Ah
[3]
Enable device attach detection
REG_0Ah
[4]
High-current divider mode enable
REG_0Bh
[0]
USB 2.0 port polarity configuration for downstream ports 1
REG_0Bh
[1]
USB 2.0 port polarity configuration for downstream ports 2
REG_0Bh
[2]
USB 2.0 port polarity configuration for downstream ports 3
REG_0Bh
[3]
USB 2.0 port polarity configuration for downstream ports 4
REG_F0h
[3:1]
DESCRIPTION
USB power switch power-on delay
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8.3.4 Clock Generation
The TUSB4041I device accepts a crystal input to drive an internal oscillator or an external clock source. If a clock
is provided to the XI pin instead of a crystal, the XO pin is left open. Otherwise, if a crystal is used, the
connection must follow these guidelines. Because the XI and XO pins are coupled to other leads and supplies on
the PCB, keep traces as short as possible and away from any switching leads. Minimize the capacitance
between the XI and XO pins by shielding C1 and C2 with the clean ground lines.
R1
10 M
XI
XO
24 MHz
CL2
CL1
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Figure 2. TUSB4041I Clock
8.3.5 Crystal Requirements
The crystal must be fundamental mode with load capacitance of 12 to 24 pF and frequency stability rating of
±100 PPM or better. To ensure proper startup oscillation condition, TI recommends a maximum crystal
equivalent series resistance (ESR) of 50 Ω. If a crystal source is used, use a parallel load capacitor. The exact
load capacitance value used depends on the crystal vendor. Refer to application note Selection and Specification
for Crystals for Texas Instruments USB 2.0 Devices (SLLA122) for details on how to determine the load
capacitance value.
8.3.6 Input Clock Requirements
When using an external clock source such as an oscillator, the reference clock should have a frequency stability
of ±100 PPM or better and have less than 50-ps absolute peak-to-peak jitter. Tie XI to the 1.8-V clock source,
and leave XO floating.
8.3.7 Power-Up and Reset
The TUSB4041I device does not have specific power-sequencing requirements with respect to the core power
(VDD) or I/O and analog power (VDD33). The core power (VDD) or I/O power (VDD33) can be powered up for an
indefinite period of time while the other is not powered up if all of the following constraints are met:
• Observe all maximum ratings and recommended operating conditions.
• Observe all warnings about exposure to maximum rated and recommended conditions, particularly junction
temperature. These apply to power transitions and normal operation.
• Limit bus contention to 100 hours over the projected lifetime of the device while VDD33 is powered-up.
• Do not exceed the ratings listed in the Absolute Maximum Ratings table for bus contention while VDD33 is
powered-down.
A supply bus is powered-up when the voltage is within the recommended operating range. A supply bus is
powered-down when it is below that range, and either stable or in transition.
The device requires a minimum reset duration of 3 ms. This reset duration is defined as the time when the power
supplies are in the recommended operating range to the deassertion of the GRSTz pin. Generate the reset pulse
using a programmable-delay supervisory device or using an RC circuit.
14
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8.4 Device Functional Modes
8.4.1 External Configuration Interface
The TUSB4041I device supports a serial interface for configuration register access. The device can be
configured by an attached I2C EEPROM or accessed as a slave by an SMBus-capable host controller. The
external interface is enabled when both the SCL/SMBCLK and SDA/SMBDAT pins are pulled up to 3.3 V at the
deassertion of reset. The mode, I2C master or SMBus slave, is determined by the state of SMBUSz pin at reset.
8.4.2 I2C EEPROM Operation
The TUSB4041I device supports a single-master, standard mode (100 kb/s) connection to a dedicated I2C
EEPROM when the I2C interface mode is enabled. In I2C mode, the TUSB4041I device reads the contents of the
EEPROM at bus address 1010000b using 7-bit addressing starting at address 0.
If the value of the EEPROM contents at byte 00h equals 55h, the TUSB4041I device loads the configuration
registers according to the EEPROM map. If the first byte is not 55h, the TUSB4041I device exits the I2C mode
and continues execution with the default values in the configuration registers. The hub does not connect on the
upstream port until the configuration is completed. If the hub detected an unprogrammed EEPROM (value other
than 55h), the hub enters programming mode and a programming endpoint within the hub is enabled.
NOTE
The bytes located above offset Ah are optional. The requirement for data in those
addresses is dependent on the options configured in the Device Configuration Register
and Device Configuration Register 2.
For details on I2C operation, refer to the UM10204 I2C-bus Specification and User Manual.
8.4.3 SMBus Slave Operation
When the SMBus interface mode is enabled, the TUSB4041I device supports read block and write block
protocols as a slave-only SMBus device.
The TUSB4041I device slave address is 1000 1xyz, where:
• x is the state of GANGED/SMBA2/HS_UP pin at reset
• y is the state of FULLPWRMGMTz/SMBA1 pin at reset
• z is the read-write (R/W) bit; 1 = read access, 0 = write access
If the TUSB4041I device is addressed by a host using an unsupported protocol, the device does not respond.
The TUSB4041I device waits indefinitely for configuration by the SMBus host and does not connect on the
upstream port until the SMBus host indicates configuration is complete by clearing the CFG_ACTIVE bit.
For details on SMBus requirements, refer to the System Management Bus (SMBus) Specification.
NOTE
During the SMBUS configuration the hub may draw an extra current, this extra current
consumption will end as soon as the CFG_ACTIVE bit is cleared. For more information
refer to Hub Input Supply Current section in this datasheet.
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8.5 Register Maps
8.5.1 Configuration Registers
The internal configuration registers are accessed on byte boundaries. The configuration register values are
loaded with defaults, but can be overwritten when the TUSB4041I device is in I2C or SMBus mode.
Table 3. Memory Map
BYTE ADDRESS
EEPROM CONFIGURABLE
ROM Signature Register
No
01h
Vendor ID LSB
Yes
02h
Vendor ID MSB
Yes
03h
Product ID LSB
Yes
04h
Product ID MSB
Yes
05h
Device Configuration Register
Yes
06h
Battery Charging Support Register
Yes
07h
Device Removable Configuration Register
Yes
08h
Port Used Configuration Register
09h
Reserved
0Ah
Device Configuration Register 2
Yes
0Bh
Yes
Yes, program to 00h
USB 2.0 Port Polarity Control Register
Yes
0Ch to 0Fh
Reserved
No
10h to 1Fh
UUID Byte [15:0]
No
20h to 21h
LangID Byte [1:0]
Yes, if customStrings is set
22h
Serial Number String Length
Yes, if customSerNum is set
23h
Manufacturer String Length
Yes, if customStrings is set
24h
Product String Length
Yes, if customStrings is set
25h to 2Fh
Reserved
30h to 4Fh
Serial Number String Byte [31:0]
Yes, if customSerNum is set
50h to 8Fh
Manufacturer String Byte [63:0]
Yes, if customStrings is set
90h to CFh
Product String Byte [63:0]
Yes, if customStrings is set
D0 to DFh
Reserved
No
Additional Feature Configuration Register
Yes
Reserved
No
Device Status and Command Register
No
Reserved
No
F0h
F1 to F7h
F8h
F9 to FFh
16
CONTENTS
00h
No
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8.5.2 ROM Signature Register
Offset = 0h
Figure 3. ROM Signature Register
7
6
5
4
3
2
1
0
romSignature
RW-0
Table 4. ROM Signature Register Field Descriptions
Bit
Field
Type
Reset
Description
ROM signature register
7:0
romSignature
RW
The TUSB4041I device uses this register in I2C mode to validate whether the
attached EEPROM has been programmed. The first byte of the EEPROM is
compared to the mask 55h and if not a match, the TUSB4041I device aborts the
EEPROM load and executes with the register defaults.
0
8.5.3 Vendor ID LSB Register
Offset = 1h, reset = 51h
Figure 4. Vendor ID LSB Register
7
vendorIdLsb[7]
R/RW-0
6
vendorIdLsb[6]
R/RW-1
5
vendorIdLsb[5]
R/RW-0
4
vendorIdLsb[4]
R/RW-1
3
2
vendorIdLsb[3:1]
R/RW-0
1
0
vendorIdLsb[0]
R/RW-1
Table 5. Vendor ID LSB Register Field Descriptions
Bit
Field
Type
Reset
7
vendorIdLsb[7]
R/RW
0
Vendor ID LSB
6
vendorIdLsb[6]
R/RW
1
5
vendorIdLsb[5]
R/RW
0
4
vendorIdLsb[4]
R/RW
1
Least significant byte of the unique vendor ID assigned by the USB-IF; the
default value of this register is 51h representing the LSB of the TI Vendor ID
0451h. The value may be overwritten to indicate a customer vendor ID.
vendorIdLsb[3:1]
R/RW
0
vendorIdLsb[0]
R/RW
1
3:1
0
Description
This field is R/W unless the OTP ROM VID and OTP ROM PID values are nonzero. If both values are non-zero, the value when reading this register will
reflect the OTP ROM value.
8.5.4 Vendor ID MSB Register
Offset = 2h, reset = 04h
Figure 5. Vendor ID MSB Register
7
6
5
vendorIdMsb[7:3]
R/RW-0
4
3
2
vendorIdMsb[2]
R/RW-1
1
0
vendorIdMsb[1:0]
R/RW-0
Table 6. Vendor ID MSB Register Field Descriptions
Bit
Field
Type
Reset
7:3
vendorIdMsb[7:3]
R/RW
0
Vendor ID MSB
vendorIdMsb[2]
R/RW
1
Most significant byte of the unique vendor ID assigned by the USB-IF; the default
value of this register is 04h representing the MSB of the TI Vendor ID 0451h. The
value may be overwritten to indicate a customer vendor ID.
vendorIdMsb[1:0]
R/RW
0
This field is R/W unless the OTP ROM VID and OTP ROM PID values are non-zero.
If both values are non-zero, the value when reading this register shall reflect the
OTP ROM value.
2
1:0
Description
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8.5.5 Product ID LSB Register
Offset = 3h, reset = 40h
Figure 6. Product ID LSB Register
7
6
productIdLsb[7] productIdLsb[6]
R/RW-0
R/RW-1
5
4
3
2
productIdLsb[5:0]
R/RW-0
1
0
Table 7. Product ID LSB Register Field Descriptions
Bit
Field
Type
Reset
7
productIdLsb[7]
R/RW
0
Product ID LSB.
6
productIdLsb[6]
R/RW
1
productIdLsb[5:0]
R/RW
0
The default value of this register is 40h representing the LSB of the product
ID assigned by TI. The value reported in the USB 2.0 device descriptor is
the value of this register bit wise XORed with 00000010b. This device will
always report the XORed PID LSB value of 0x42. The value may be
overwritten to indicate a customer product ID.
5:0
Description
This field is R/W unless the OTP ROM VID and OTP ROM PID values are
non-zero. If both values are non-zero, the value when reading this register
will reflect the OTP ROM value.
8.5.6 Product ID MSB Register
Offset = 4h, reset = 81h
Figure 7. Product ID MSB Register
7
productIdMsb[7]
R/RW-1
6
5
4
3
productIdMsb[6:1]
R/RW-0
2
1
0
productIdMsb[0]
R/RW-1
Table 8. Product ID MSB Register Field Descriptions
Bit
7
6:1
0
18
Field
Type
Reset
Description
productIdMsb[7]
R/RW
1
Product ID MSB
productIdMsb[6:1]
R/RW
0
Most significant byte of the product ID assigned by TI; the default value of this
register is 81h representing the MSB of the product ID assigned by TI. The
value may be overwritten to indicate a customer product ID.
productIdMsb[0]
R/RW
1
This field is R/W unless the OTP ROM VID and OTP ROM PID values are
non-zero. If both values are non-zero, the value when reading this register will
reflect the OTP ROM value.
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8.5.7 Device Configuration Register
Offset = 5h
Figure 8. Device Configuration Register
7
customStrings
RW-0
6
customSernum
RW-0
5
RSVD
RW-0
4
RSVD
R-1
3
ganged
RW-X
2
fullPwrMgmtz
RW-X
1
RSVD
RW-0
0
RSVD
R-0
Table 9. Device Configuration Register Field Descriptions
Bit
Field
Type
Reset
Description
Custom strings enable
This bit controls the ability to write to the Manufacturer String Length, Manufacturer
String, Product String Length, Product String, and Language ID registers
7
customStrings
RW
0
0 = The Manufacturer String Length, Manufacturer String, Product String
Length, Product String, and Language ID registers are read only.
1 = The Manufacturer String Length, Manufacturer String, Product String
Length, Product String, and Language ID registers may be loaded by
EEPROM or written by SMBus.
The default value of this bit is 0.
Custom serial number enable
This bit controls the ability to write to the serial number registers.
6
customSernum
RW
0
0 = The Serial Number String Length and Serial Number String registers are
read only.
1 = Serial Number String Length and Serial Number String registers may be
loaded by EEPROM or written by SMBus.
The default value of this bit is 0.
5
RSVD
RW
0
Reserved.
4
RSVD
R
1
Reserved. This bit is reserved and returns 1 when read.
Ganged
This bit is loaded at the deassertion of reset with the value of the
GANGED/SMBA2/HS_UP pin.
0 = Each port is individually power switched and enabled by the
PWRCTL[4:1]/BATEN[4:1] pins.
3
ganged
RW
X
1 = The power switch control for all ports is ganged and enabled by the
PWRCTL[4:1]/BATEN1 pin.
When the TUSB4041I device is in I2C mode, the TUSB4041I device loads this bit
from the contents of the EEPROM.
When the TUSB4041I device is in SMBUS mode, the value may be overwritten by
an SMBus host.
Full power management
This bit is loaded at the deassertion of reset with the value of the
FULLPWRMGMTz/SMBA1 pin.
0 = Port power switching status reporting is enabled
2
fullPwrMgmtz
RW
X
1 = Port power switching status reporting is disabled
When the TUSB4041I device is in I2C mode, the TUSB4041I device loads this bit
from the contents of the EEPROM.
When the TUSB4041I device is in SMBUS mode, the value may be overwritten by
an SMBus host.
1
RSVD
RW
0
Reserved
This field is reserved and should not be altered from the default.
0
RSVD
R
0
Reserved
This field is reserved and returns 0 when read.
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8.5.8 Battery Charging Support Register
Offset = 6h
Figure 9. Battery Charging Support Register
7
6
5
4
3
2
RSVD
R-0
1
0
batEn[3:0]
RW-X
Table 10. Battery Charging Support Register Field Descriptions
Bit
Field
Type
Reset
7:4
RSVD
R
0
Description
Reserved
Read only, returns 0 when read.
Battery Charger Support. The bits in this field indicate whether the downstream port
implements the charging port features.
0 = The port is not enabled for battery charging support features
1 = The port is enabled for battery charging support features
3:0
batEn[3:0]
RW
X
Each bit corresponds directly to a downstream port, that is batEn0 corresponds to
downstream port 1, and batEN1 corresponds to downstream port 2.
The default value for these bits are loaded at the deassertion of reset with the value
of PWRCTL/BATEN[3:0].
When in I2C/SMBus mode the bits in this field may be overwritten by EEPROM
contents or by an SMBus host.
8.5.9 Device Removable Configuration Register
Offset = 7h
Figure 10. Device Removable Configuration Register
7
customRmbl
RW-0
6
5
RSVD
R-0
4
3
2
1
0
rmbl[3:0]
RW-X
Table 11. Device Removable Configuration Register Field Descriptions
Bit
Field
Type
Reset
Description
Custom removable
This bit controls the ability to write to the port removable bits.
7
customRmbl
RW
0
0 = rmbl[3:0] are read only, and the values are loaded from the OTP ROM.
1 = rmbl[3:0] are R/W and can be loaded by EEPROM or written by SMBus.
This bit may be written simultaneously with rmbl[3:0].
6:4
RSVD
R
0
Reserved
Read only, returns 0 when read
Removable
The bits in this field indicate whether a device attached to downstream ports 4
through 1 are removable or permanently attached.
0 = The device attached to the port is not removable.
3:0
rmbl[3:0]
RW
X
1 = The device attached to the port is removable.
Each bit corresponds directly to a downstream port n + 1, For example: rmbl0
corresponds to downstream port 1, rmbl1 corresponds to downstream port 2, and
so on.
This field is read only unless the customRmbl bit is set to 1. Otherwise, the value of
this field reflects the inverted values of the OTP ROM non_rmb[3:0] field.
20
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8.5.10 Port Used Configuration Register
Offset = 8h
Figure 11. Port Used Configuration Register
7
6
5
4
3
2
RSVD
R-0
1
0
used[3:0]
RW-1
Table 12. Port Used Configuration Register Field Descriptions
Bit
Field
Type
Reset
7:4
RSVD
R
0
Description
Reserved
Read only
Used
The bits in this field indicate whether a port is enabled.
3:0
used[3:0]
RW
1
0 = The port is disabled.
1 = The port is enabled.
8.5.11 Device Configuration Register 2
Offset = Ah
Figure 12. Device Configuration Register 2
7
RSVD
6
customBCfeatu
res
RW-0
R-0
5
pwrctlPol
RW-X
4
HiCurAcpMode
En
R/RW-0
3
cpdEN
2
RSVD
1
autoModeEnz
0
RSVD
R/RW-0
RW-0
RW-X
R-0
Table 13. Device Configuration Register 2 Field Descriptions
Bit
Field
Type
Reset
7
RSVD
R
0
Description
Reserved
Read only, returns 0 when read.
Custom battery charging feature enable
This bit controls the ability to write to the battery charging feature configuration
controls.
6
customBCfeatures
RW
0
0 = The HiCurAcpModeEn and cpdEN bits are read only and the values
are loaded from the OTP ROM.
1 = The HiCurAcpModeEn and cpdEN, bits are R/W and can be loaded
by EEPROM or written by SMBus from this register.
This bit may be written simultaneously with HiCurAcpModeEn and cpdEN.
Power enable polarity
This bit is loaded at the deassertion of reset with the value of the
PWRCTL_POL pin.
0 = PWRCTL polarity is active low.
5
pwrctlPol
RW
X
1 = PWRCTL polarity is active high.
When the TUSB4041I device is in I2C mode, the TUSB4041I device loads this
bit from the contents of the EEPROM.
When the TUSB4041I device is in SMBUS mode, the value may be
overwritten by an SMBus host.
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Table 13. Device Configuration Register 2 Field Descriptions (continued)
Bit
Field
Type
Reset
Description
High-current ACP mode enable
This bit enables the high-current tablet charging mode when the automatic
battery charging mode is enabled for downstream ports.
4
HiCurAcpModeEn
R/RW
0
0 = High-current divider mode disabled. Legacy current divider mode
enabled.
1 = High-current divider mode enabled
This bit is read only unless the customBCfeatures bit is set to 1. If
customBCfeatures is 0, the value of this bit reflects the value of the
OTP ROM HiCurAcpModeEn bit.
Enable device attach detection
This bit enables device attach detection (such as a cell-phone detect) when
auto mode is enabled.
3
cpdEN
RRW
0
0 = Device attach detect is disabled in auto mode.
1 = Device attach detect is enabled in auto mode.
This bit is read only unless the customBCfeatures bit is set to 1. If
customBCfeatures is 0, the value of this bit reflects the value of the OTP ROM
cpdEN bit.
2
RSVD
RW
0
Reserved
Automatic mode enable (1)
This bit is loaded at the deassertion of reset with the value of the
AUTOENz/HS_SUSPEND pin.
1
autoModeEnz
RW
X
The automatic mode only applies to downstream ports with battery charging
enabled when the upstream port is not connected. Under these conditions:
0 = Automatic mode battery charging features are enabled.
1 = Automatic mode is disabled; only battery-charging DCP mode is
supported.
0
RSVD
R
0
Reserved
Read only, returns 0 when read.
(1)
22
When the upstream port is connected, battery charging 1.2 CDP mode will be supported on all ports that are enabled for battery
charging support regardless of the value of this bit, with the exception of port 1. CDP on port 1 is not supported when automatic mode is
enabled.
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8.5.12 USB 2.0 Port Polarity Control Register
Offset = Bh
Figure 13. USB 2.0 Port Polarity Control Register
7
customPolarity
RW-0
6
5
4
p4_usb2pol
R/RW-0
RSVD
R-0
3
p3_usb2pol
R/RW-0
2
p2_usb2pol
R/RW-0
1
p1_usb2pol
R/RW-0
0
p0_usb2pol
R/RW-0
Table 14. USB 2.0 Port Polarity Control Register Field Descriptions
Bit
Field
Type
Reset
Description
Custom USB 2.0 polarity
This bit controls the ability to write the p[4:0]_usb2pol bits.
7
customPolarity
RW
0
0 = The p[4:0]_usb2pol bits are read only, and the values are loaded from the
OTP ROM.
1 = The p[4:0]_usb2pol bits are R/W and can be loaded by EEPROM or written
by SMBus from this register.
This bit may be written simultaneously with the p[4:0]_usb2pol bits
6:5
RSVD
R
0
Reserved
Read only, returns 0 when read
Downstream port 4 DM/DP polarity
This bit controls the polarity of the port.
0 = USB 2.0 port polarity is as shown in the pinout.
4
p4_usb2pol
R/RW
0
1 = USB 2.0 port polarity is swapped from that shown in the pinout (that is, DM
becomes DP, and DP becomes DM).
This bit is read only unless the customPolarity bit is set to 1. If customPolarity is 0, the
value of this bit reflects the value of the OTP ROM p4_usb2pol bit.
Downstream port 3 DM/DP polarity
This bit controls the polarity of the port.
0 = USB 2.0 port polarity is as shown in the pinout.
3
p3_usb2pol
R/RW
0
1 = USB 2.0 port polarity is swapped from that shown in the pinout (that is, DM
becomes DP, and DP becomes DM).
This bit is read only unless the customPolarity bit is set to 1. If customPolarity is 0, the
value of this bit reflects the value of the OTP ROM p3_usb2pol bit.
Downstream port 2 DM/DP polarity
This bit controls the polarity of the port.
0 = USB 2.0 port polarity is as shown in the pinout.
2
p2_usb2pol
R/RW
0
1 = USB 2.0 port polarity is swapped from that shown in the pinout (that is, DM
becomes DP, and DP becomes DM).
This bit is read only unless the customPolarity bit is set to 1. If customPolarity is 0, the
value of this bit reflects the value of the OTP ROM p2_usb2pol bit.
Downstream port 1 DM/DP polarity
This bit controls the polarity of the port.
0 = USB 2.0 port polarity is as shown in the pinout.
1
p1_usb2pol
RRW
0
1 = USB 2.0 port polarity is swapped from that shown in the pinout (that is, DM
becomes DP, and DP becomes DM).
This bit is read only unless the customPolarity bit is set to 1. If customPolarity is 0, the
value of this bit reflects the value of the OTP ROM p1_usb2pol bit.
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Table 14. USB 2.0 Port Polarity Control Register Field Descriptions (continued)
Bit
Field
Type
Reset
Description
Upstream port DM/DP polarity
This bit controls the polarity of the port.
0 = USB 2.0 port polarity is as shown in the pinout.
0
p0_usb2pol
R/RW
0
1 = USB 2.0 port polarity is swapped from that shown in the pinout (that is, DM
becomes DP, and DP becomes DM).
This bit is read only unless the customPolarity bit is set to 1. If customPolarity is 0, the
value of this bit reflects the value of the OTP ROM p0_usb2pol bit.
8.5.13 UUID Byte N Register
Offset = 10h-1Fh
Figure 14. UUID Byte N Register
7
6
5
4
3
2
1
0
uuidByte[n]
R-X
Table 15. UUID Byte N Register Field Descriptions
Bit
Field
Type
Reset
Description
UUID byte N
7:0
uuidByte[n]
R
The UUID returned in the Container ID descriptor. The value of this register is
provided by the device and meets the UUID requirements of the Internet
Engineering Task Force (IETF) RFC 4122 A UUID URN Namespace.
X
8.5.14 Language ID LSB Register
Offset = 20h, reset = 09h
Figure 15. Language ID LSB Register
7
6
5
4
langIdLsb[7:4]
R/RW-0
3
langIdLsb[3]
R/RW-1
2
1
langIdLsb[2:1]
R/RW-0
0
langIdLsb[0]
R/RW-1
Table 16. Language ID LSB Register Field Descriptions
Bit
Field
Type
Reset
7:4
langIdLsb[7:4]
R/RW
0
Language ID least significant byte
langIdLsb[3]
R/RW
1
langIdLsb[2:1]
R/RW
0
This register contains the value returned in the LSB of the LANGID code in string
index 0. The TUSB4041I device only supports one language ID. The default
value of this register is 09h representing the LSB of the LangID 0409h indicating
English United States.
langIdLsb[0]
R/RW
1
3
2:1
0
24
Description
When the customStrings bit is set to 1, this field may be overwritten by the
contents of an attached EEPROM or by an SMBus host.
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8.5.15 Language ID MSB Register
Offset = 21h, reset = 04h
Figure 16. Language ID MSB Register
7
6
5
langIdMsb[7:3]
R/RW-0
4
3
2
langIdMsb[2]
R/RW-1
1
0
langIdMsb[1:0]
R/RW-0
Table 17. Language ID MSB Register Field Descriptions
Bit
Field
Type
Reset
7:3
langIdMsb[7:3]
R/RW
0
Language ID most significant byte
langIdMsb[2]
R/RW
1
langIdMsb[1:0]
R/RW
0
This register contains the value returned in the MSB of the LANGID code in
string index 0. The TUSB4041I device only supports one language ID. The
default value of this register is 04h representing the MSB of the LangID 0409h
indicating English United States.
2
1:0
Description
When the customStrings bit is set to 1, this field may be overwritten by the
contents of an attached EEPROM or by an SMBus host.
8.5.16 Serial Number String Length Register
Offset = 22h
Figure 17. Serial Number String Length Register
7
6
RSVD
R-0
5
serNumStringL
en[5]
R/RW-0
4
3
serNumStringLen[4:3]
2
R/RW-1
1
serNumStringLen[2:0]
0
R/RW-0
Table 18. Serial Number String Length Register Field Descriptions
Bit
Field
Type
Reset
Description
7:6
RSVD
R
0
serNumStringLen[5]
R/RW
0
Serial number string length
4:3
serNumStringLen[4:3]
R/RW
1
The string length in bytes for the serial number string. The default value is
18h indicating that a 24-byte serial number string is supported. The
maximum string length is 32 bytes.
2:0
serNumStringLen[2:0]
R/RW
0
Reserved
Read only, returns 0 when read.
5
When the customSernum bit is set to 1, this field may be overwritten by the
contents of an attached EEPROM or by an SMBus host.
When the field is non-zero, a serial number string of serNumbStringLen
bytes is returned at string index 1 from the data contained in the Serial
Number String registers.
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8.5.17 Manufacturer String Length Register
Offset = 23h
Figure 18. Manufacturer String Length Register
7
RSVD
R-0
6
5
4
3
mfgStringLen
R/RW-0
2
1
0
Table 19. Manufacturer String Length Register Field Descriptions
Bit
Field
Type
Reset
7
RSVD
R
0
Description
Reserved
Read only, returns 0 when read
Manufacturer string length
6:0
mfgStringLen
R/RW
The string length in bytes for the manufacturer string. The default value is 0,
indicating that a manufacturer string is not provided. The maximum string length is 64
bytes.
0
When the customStrings bit is set to 1, this field may be overwritten by the contents of
an attached EEPROM or by an SMBus host.
When the field is non-zero, a manufacturer string of mfgStringLen bytes is returned at
string index 3 from the data contained in the Manufacturer String registers.
8.5.18 Product String Length Register
Offset = 24h
Figure 19. Product String Length Register
7
RSVD
R-0
6
5
4
3
prodStringLen
R/RW-0
2
1
0
Table 20. Product String Length Register Field Descriptions
Bit
Field
Type
Reset
7
RSVD
R
0
Description
Reserved
Read only, returns 0 when read.
Product string length
The string length in bytes for the product string. The default value is 0, indicating
that a product string is not provided. The maximum string length is 64 bytes.
6:0
prodStringLen
R/RW
0
When the customStrings bit is set to 1, this field may be overwritten by the contents
of an attached EEPROM or by an SMBus host.
When the field is non-zero, a product string of prodStringLen bytes is returned at
string index 3 from the data contained in the Product String registers.
26
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8.5.19 Serial Number String Registers
Offset = 30h-4Fh
Figure 20. Serial Number String Registers
7
6
5
4
3
2
1
0
serialNumber[n]
R/RW-X
Table 21. Serial Number String Registers Field Descriptions
Bit
Field
Type
Reset
7:0
serialNumber[n]
R/RW
X
Description
Serial Number byte N
The serial number returned in the Serial Number string descriptor at string index 1.
The default value of these registers is assigned by TI. When customSernum is 1,
these registers may be overwritten by EEPROM contents or by an SMBus host.
8.5.20 Manufacturer String Registers
Offset = 50h-8Fh
Figure 21. Manufacturer String Registers
7
6
5
4
3
mfgStringByte[n]
R/W-0
2
1
0
Table 22. Manufacturer String Registers Field Descriptions
Bit
Field
Type
Reset
Description
Manufacturer string byte N
7:0
mfgStringByte[n]
R/W
These registers provide the string values returned for string index 3 when
mfgStringLen is greater than 0. The number of bytes returned in the string is
equal to mfgStringLen.
0
The programmed data should be in UNICODE UTF-16LE encodings as defined
by the Unicode Standard, Worldwide Character Encoding, Version 5.0.
8.5.21 Product String Byte N Register
Offset = 90h-CFh
Figure 22. Product String Byte N Register
7
6
5
4
3
prodStringByte[n]
R/RW-0
2
1
0
Table 23. Product String Byte N Register Field Descriptions
Bit
Field
Type
Reset
Description
Product string byte N
7:0
prodStringByte[n]
R/RW
0
These registers provide the string values returned for string index 2 when
prodStringLen is greater than 0. The number of bytes returned in the string is
equal to prodStringLen.
The programmed data should be in UNICODE UTF-16LE encodings as defined by
the Unicode Standard, Worldwide Character Encoding, Version 5.0.
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8.5.22 Additional Feature Configuration Register
Offset = F0h
Figure 23. Additional Feature Configuration Register
7
6
RSVD
R-0
5
4
stsOutputEn
R/RW-0
3
2
pwronTime
R/W-0
1
0
RSVD
R/W-0
Table 24. Additional Feature Configuration Register Field Descriptions
Bit
Field
Type
Reset
7:5
RSVD
R
0
4
RSVD
R/RW
0
Description
Reserved
Read only, returns 0 when read.
Reserved.
Power-on delay time
3:1
pwronTime
RW
When OTP ROM pwronTime field is all 0, this field sets the delay time from the
removal disable of PWRCTL to the enable of PWRCTL when transitioning battery
charging modes. For example, when disabling the power on a transition from a
custom charging mode to dedicated charging port mode. The nominal timing is
defined as follows:
0
TPWRON_EN = (pwronTime + 1) x 200 ms
(1)
This field may be overwritten by EEPROM contents or by an SMBus host.
0
RSVD
RW
0
Reserved
8.5.23 Device Status and Command Register
Offset = F8h
Figure 24. Device Status and Command Register
7
6
5
4
3
RSVD
R-0
2
1
smbusRst
W1S-0
0
cfgActive
W1C-0
Table 25. Device Status and Command Register Field Descriptions
Bit
Field
Type
Reset
7:2
RSVD
R
0
Description
Reserved
Read only, returns 0 when read
SMBus interface reset
1
smbusRst
W1S
0
This bit loads the registers back to their GRSTz values.
This bit is set by writing a 1 and is cleared by hardware on completion of the reset. A
write of 0 has no effect.
Configuration active
0
cfgActive
W1C
0
This bit indicates that configuration of the TUSB4041I device is currently active. The
bit is set by hardware when the device enters the I2C or SMBus mode. The
TUSB4041I device does not connect on the upstream port while this bit is 1.
When in the SMBus mode, this bit must be cleared by the SMBus host to exit the
configuration mode and allow the upstream port to connect.
The bit is cleared by a writing 1. A write of 0 has no effect.
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9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
The TUSB4041I device is a four-port USB 2.0 hub. The provides USB high-speed and full-speed connections on
the upstream port and provides USB high-speed, full-speed, or low-speed connections on the downstream port.
The TUSB4041I device can be used in any application that requires additional USB-compliant ports. For
example, a specific notebook may only have two downstream USB ports. By using the TUSB4041I device, the
notebook can increase the downstream port count to five.
9.2 Typical Application
A common application for the TUSB4041I device is as a self-powered standalone USB-hub product. The product
is powered by an external 5-V DC power adapter. In this application, using a USB cable, the upstream port of the
TUSB4041I device is plugged into a USB host controller. The downstream ports of the TUSB4041I device are
exposed to users for connecting USB hard drives, cameras, flash drives, and so forth.
USB
Type B
Connector
DC
Power
US Port
TUSB4041I
USB
Power Switch
USB
Power Switch
DS Port 1
DS Port 2
DS Port 3
DS Port 4
USB Type A
Connector
USB Type A
Connector
USB Type A
Connector
USB Type A
Connector
Copyright © 2016, Texas Instruments Incorporated
Figure 25. Discrete USB Hub Product
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Typical Application (continued)
9.2.1 Design Requirements
For this design example, use the parameters listed in Table 26.
Table 26. Design Parameters
DESIGN PARAMETER
EXAMPLE VALUE
VDD supply
1.1 V
VDD33 supply
3.3 V
Upstream port USB support (HS, FS)
HS, FS
Downstream port 1 USB support (HS, FS, LS)
HS, FS, LS
Downstream port 2 USB support (HS, FS, LS)
HS, FS, LS
Downstream port 3 USB support (HS, FS, LS)
HS, FS, LS
Downstream port 4 USB support (HS, FS, LS)
HS, FS, LS
Number of removable downstream ports
4
Number of non-removable downstream ports
0
Full power management of downstream ports
Yes (FULLPWRMGMTZ = 0)
Individual control of downstream port power switch
Yes (GANGED = 0)
Power switch enable polarity
Active high (PWRCTL_POL = 1)
Battery charge support for downstream port 1
Yes
Battery charge support for downstream port 2
Yes
Battery charge support for downstream port 3
Yes
Battery charge support for downstream port 4
Yes
I2C EEPROM support
No
24-MHz clock source
Crystal
9.2.2 Detailed Design Procedure
9.2.2.1 Upstream Port Implementation
R1
90.9 KΩ
0402
1%
C1
10 µF
U1A
+5V 1
5
FULLPWRMGMTZ/SMBA1
16
Type B USB-Shield
6
GANGED/SMBA2/HS_UP
R2
10 KΩ 1%
0402
1%
DM 2
USB_DM_UP
22
DP 3
USB_DP_UP
21
GND
USB_VBUS
VBUS
10
8
R3
4.7 KΩ
R4
4.7 KΩ
USB_DM_UP
USB_DP_UP
4
TUSB4041I_PAP
J1
C2
0.1 µF
C3
0.001 µF
R5
1 MΩ
Copyright © 2016, Texas Instruments Incorporated
Figure 26. Upstream Port Implementation
The upstream of the TUSB4041I device is connected to a USB2 Type B connector. This particular example has
GANGED pin and FULLPWRMGMTZ pin pulled low, which results in individual power support each downstream
port. The VBUS signal from the USB2 Type B connector is feed through a voltage divider. The purpose of the
voltage divider is to make sure the level meets USB_VBUS input requirements
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9.2.2.2 Downstream Port 1 Implementation
BOARD_3P3V
FB1
R6
4.7K
POPULATE
FOR BC SUPPORT
DN1_VBUS
DN1_VBUS
VBUS_DS1
220 @ 100MHZ
C4
0.1uF
J2
1
U1B
USB_DM_DN1
USB_DP_DN1
34
USB_DM_DN1
2
33
USB_DP_DN1
3
VBUS
DM
DP
4
GND
5
4
PWRCTL1/BATEN1
PWRCTRL1_BATEN1
14
OVERCUR1Z
SHIELD1
6
SHIELD2
OVERCUR1Z
USB2_TYPEA
R7
1M
TUSB4041I_PAP
C5
0.001uF
C6
0.1uF
Copyright © 2016, Texas Instruments Incorporated
Figure 27. Downstream Port 1 Implementation
The downstream port 1 of the TUSB4041I device is connected to a USB2 type A connector. With BATEN1 pin
pulled up, battery charge support is enabled for Port 1. If battery charge support is not needed, then uninstall the
pullup resistor on BATEN1.
9.2.2.3 Downstream Port 2 Implementation
BOARD_3P3V
FB2
POPULATE
FOR BC SUPPORT
R8
4.7 KΩ
DN2_VBUS
DN2_VBUS
VBUS_DS2
220 at 100 MHz
C7
0.1 µF
J3
1
U1C
USB_DM_DN2
USB_DP_DN2
42
USB_DM_DN2
2
41
USB_DP_DN2
3
4
5
PWRCTL2/BATEN2
OVERCUR2Z
3
PWRCTRL2_BATEN2
15
6
VBUS
DM
DP
GND
SHIELD1
SHIELD2
OVERCUR2Z
R9
1 MΩ
TUSB4041I_PAP
C9
0.001 µF
USB2_TYPEA
C8
0.1 µF
Copyright © 2016, Texas Instruments Incorporated
Figure 28. Downstream Port 2 Implementation
The downstream port 2 of the TUSB4041I device is connected to a USB2 type A connector. With BATEN2 pin
pulled up, battery charge support is enabled for port 2. If battery charge support is not needed, then uninstall the
pullup resistor on BATEN2.
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9.2.2.4 Downstream Port 3 Implementation
BOARD_3P3V
FB3
POPULATE
FOR BC SUPPORT
R10
4.7 KΩ
VBUS_DS3
DN3_VBUS
220 at 100 MHz
C10
0.1 µF
J4
1
U1D
USB_DM_DN3
USB_DP_DN3
50
USB_DM_DN3
2
49
USB_DP_DN3
3
4
5
PWRCTL3/BATEN3
OVERCUR3Z
1
PWRCTRL3_BATEN3
12
6
VBUS
DM
DP
GND
SHIELD1
SHIELD2
OVERCUR3Z
R11
1 MΩ
TUSB4041I_PAP
C11
0.001 µF
USB2_TYPEA
C12
0.1 µF
Copyright © 2016, Texas Instruments Incorporated
Figure 29. Downstream Port 3 Implementation
The downstream port3 of the TUSB4041I device is connected to a USB2 type A connector. With BATEN3 pin
pulled up, battery charge support is enabled for port 3. If battery charge support is not needed, then uninstall the
pullup resistor on BATEN3.
9.2.2.5 Downstream Port 4 Implementation
BOARD_3P3V
FB4
POPULATE
FOR BC SUPPORT
R12
4.7 KΩ
VBUS_DS4
DN4_VBUS
220 at 100 MHZ
C13
0.1 µF
J5
1
U1E
USB_DM_DN4
USB_DP_DN4
57
USB_DM_DN4
2
56
USB_DP_DN4
3
4
5
PWRCTL4/BATEN4
OVERCUR4Z
64
PWRCTRL4_BATEN4
11
6
VBUS
DM
DP
GND
SHIELD1
SHIELD2
OVERCUR4Z
R13
1 MΩ
TUSB4041I_PAP
C15
0.001 µF
USB2_TYPEA
C14
0.1 µF
Copyright © 2016, Texas Instruments Incorporated
Figure 30. Downstream Port 4 Implementation
The downstream port 4 of the TUSB4041I device is connected to a USB2 Type A connector. With BATEN4 pin
pulled up, Battery Charge support is enabled for Port 4. If Battery Charge support is not needed, then uninstall
the pullup resistor on BATEN4.
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9.2.2.6 VBUS Power Switch Implementation
BOARD_3P3V
BOARD_3P3V
BOARD_5V
R19
10K
0402
5%
C42
0.1uF
U2
2
3
PWRCTRL1_BATEN1
PWRCTRL2_BATEN2
R20
10K
0402
5%
PWRCTRL1_BATEN1
4
PWRCTRL2_BATEN2
5
1
11
IN
IN
OUT1
FAULT1Z
EN1
OUT2
EN2
FAULT2Z
GND
PAD
ILIM
9
DN1_VBUS
DN1_VBUS
10
8
OVERCUR1Z
DN2_VBUS
DN2_VBUS
6
7
OVERCUR2Z
ILIM1
C43
C45
0.1uF
TPS2561
+
R21
25.5K
0402
5%
0.1uF
C44
150uF
+
C46
150uF
Limiting DS Port VBUS current to 2.2A per port.
BOARD_3P3V
BOARD_3P3V
BOARD_5V
R22
10K
0402
5%
C47
0.1uF
U3
2
3
PWRCTRL3_BATEN3
PWRCTRL4_BATEN4
R23
10K
0402
5%
4
5
1
11
IN
IN
OUT1
FAULT1Z
EN1
OUT2
EN2
FAULT2Z
GND
PAD
TPS2561
ILIM
9
DN3_VBUS
DN3_VBUS
10
8
OVERCUR3Z
DN4_VBUS
DN4_VBUS
6
7
OVERCUR4Z
ILIM2
C48
0.1uF
R24
25.5K
0402
5%
C50
+
C49
150uF
0.1uF
+
C51
150uF
Limiting DS Port VBUS current to 2.2A per port.
Copyright © 2016, Texas Instruments Incorporated
Figure 31. VBUS Power Switch Implementation
This particular example uses TI's TPS2561 dual-channel precision adjustable current-limited power switch. For
details on this power switch or other power switches available from TI, refer to www.ti.com.
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9.2.2.7 Clock, Reset, and Miscellaneous
The PWRCTL_POL is left unconnected which results in active-high power enable (PWRCTL1, PWRCTL2,
PWRCTL3, and PWRCTL4) for a USB VBUS power switch. The 1-µF capacitor on the GRSTN pin can only be
used if the VDD11 supply is stable before the VDD33 supply. Depending on the supply ramp of the two supplies,
the user may need to adjust the capacitor.
U1F
C29
18
1 µF
SDA/SMBDAT
GRSTZ
SCL/SMBDAT
SMBUSZ
30
R14
XI
AUTOENZ/HS_SUSPEND
PWRCTL_POL
1M
TEST
29
Y1
XO
USB_R1
5
6
7
13
9
17
32
R15
9.53 KΩ
0402
1%
TUSB4041I_PAP
24 MHz
C30
C31
18 pF
18 pF
R16
4.7 KΩ
R18
4.7 KΩ
Copyright © 2016, Texas Instruments Incorporated
Figure 32. Clock, Reset, and Miscellaneous
9.2.2.8 TUSB4041I Power Implementation
BOARD_1P1V
VDD11
NC
NC
TUSB4041I_PAP
VDD33
VDD33
VDD33
VDD33
C18
C19
C20
C21
C22
0.1 µF
0.1 µF
0.1 µF
0.1 µF
0.1 µF
0.1 µF
2
20
31
48
VDD33
C23
10 µF
220 at 100 MHz
BOARD_3P3V
FB6
THERMAL_PAD
28
40
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
C17
0.1 µF
C24
C25
C26
C27
0.1 µF
0.1 µF
0.1 µF
0.1 µF
C28
10 µF
220 at 100 MHz
65
23
24
26
27
35
36
38
39
43
44
46
47
51
52
54
55
58
59
61
62
C16
VDD
VDD
VDD
VDD
VDD
VDD
VDD
U1G
19
25
37
45
53
60
63
FB5
Copyright © 2016, Texas Instruments Incorporated
Figure 33. TUSB4041I Power Implementation
34
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9.2.3 Application Curves
Figure 34. High-Speed Upstream Port
Figure 35. High-Speed Downstream Port 1
Figure 36. High-Speed Downstream Port 2
Figure 37. High-Speed Downstream Port 3
Figure 38. High-Speed Downstream Port 4
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10 Power Supply Recommendations
10.1 TUSB4041I Power Supply
The user should implement VDD as a single power plane, as well as VDD33.
• The VDD pins of the TUSB4041I supply 1.1-V (nominal) power to the core of the TUSB4041I device. This
power rail can be isolated from all other power rails by a ferrite bead to reduce noise.
• The DC resistance of the ferrite bead on the core power rail can affect the voltage provided to the device
because of the high current draw on the power rail. The user may need to adjust the output of the core
voltage regulator to account for this, or select a ferrite bead with low DC resistance (less than 0.05 Ω).
• The VDD33 pins of the TUSB4041I device supply 3.3-V power rail to the I/O of the TUSB4041I device. This
power rail can be isolated from all other power rails by a ferrite bead to reduce noise.
• All power rails require a 10-µF capacitor or 1-µF capacitors for stability and noise immunity. These bulk
capacitors can be placed anywhere on the power rail. Place the smaller decoupling capacitors as close to the
TUSB4041I power pins as possible with an optimal grouping of two capacitors of differing values per pin.
10.2 Downstream Port Power
•
•
•
A source capable of supplying 5 V and up to 500 mA per port must supply the downstream port power,
VBUS. The TUSB4041I signals can control the downstream port power switches. Leaving the downstream
port power as always enabled is also possible.
The VBUS of each downstream port requires a large-bulk low-ESR capacitor of 22 µF or larger to limit in-rush
current.
TI recommends the ferrite beads on the VBUS pins of the downstream USB port connections for both ESD
and EMI reasons. A 0.1-µF capacitor on the USB connector side of the ferrite provides a low-impedance path
to ground for fast rise time ESD current that might have coupled onto the VBUS trace from the cable.
10.3 Ground
TI recommends to use only one board ground plane in the design which provides the best image plane for signal
traces running above the plane. Connect the thermal pad of the TUSB4041I and any of the voltage regulators to
this plane with vias. An earth or chassis ground is implemented only near the USB port connectors on a different
plane for EMI and ESD purposes.
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11 Layout
11.1 Layout Guidelines
Use the layout guidelines listed in this section for proper PCB layout design.
11.1.1 Placement
• Place a 9.53-kΩ ±1% resistor connected to pin USB_R1 as close as possible to the TUSB4041I device.
• Place a 0.1-µF capacitor as close as possible on each VDD and VDD33 power pin.
• The ESD and EMI protection devices (if used) should also be placed as close as possible to the USB
connector.
• If a crystal is used, it must be placed as close as possible to the XI and XO pins of the TUSB4041I device.
• Place voltage regulators as far away as possible from the TUSB4041I device, the crystal, and the differential
pairs.
• In general, the user should place the large bulk capacitors associated with each power rail as close as
possible to the voltage regulators.
11.1.2 Package Specific
• The TUSB4041I device package has a 0.5-mm pin pitch.
• The TUSB4041I device package has a 4.64-mm × 4.64-mm thermal pad. This thermal pad must be
connected to ground through a system of vias.
• Solder mask all vias under device, except for those connected to the thermal pad, to avoid any potential
issues with thermal pad layouts.
11.1.3 Differential Pairs
This section describes the layout recommendations for all the TUSB4041I device differential pairs: USB_DP_XX,
USB_DM_XX.
• The differential pairs must be designed with a differential impedance of 90 Ω ± 10%.
• To minimize crosstalk, TI recommends to keep high-speed signals away from each other. Each pair should
be separated by at least 5 times the signal trace width. Separating with ground as depicted in the layout
example also helps minimize crosstalk.
• Route all differential pairs on the same layer adjacent to a solid ground plane.
• Do not route differential pairs over any plane split.
• Adding test points causes impedance discontinuity and therefore negatively impacts signal performance. If
test points are used, place them in series and symmetrically. Do not place them in a manner that causes stub
on the differential pair.
• Avoid 90° turns in trace. Keep the use of bends in differential traces to a minimum. When bends are used, the
number of left and right bends should be as equal as possible and the angle of the bend should be ≥135°.
This guideline minimizes any length mismatch caused by the bends and therefore minimize the impact bends
have on EMI.
• Minimize the trace lengths of the differential pair traces. Eight inches is the maximum recommended trace
length for USB 2.0 differential pair signals. Longer trace lengths require very careful routing to assure proper
signal integrity.
• Match the etch lengths of the differential pair traces (that is DP and DM). The USB 2.0 differential pairs
should not exceed 50 mils relative trace length difference.
• Minimize the use of vias in the differential pair paths as much as possible. If this is not practical, make sure
that the same via type and placement are used for both signals in a pair. Place any vias used as close as
possible to the TUSB4041I device.
• To ease routing of the USB 2.0 DP and DM pair, the polarity of these pins can be swapped. If this is done,
set the appropriate Px_usb2pol register, where x = 0, 1, 2, 3, or 4.
• Do not place power fuses across the differential pair traces.
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11.2 Layout Example
TI USB2 HUB
USB2 DP/DM
USB2 TYPE B
Connector
Figure 39. Example Routing of Upstream Port
USB2 DP/DM
TI USB2 HUB
USB2 TYPE A
Connector
Figure 40. Example Routing of Downstream Port
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12 Device and Documentation Support
12.1 Documentation Support
12.1.1 Related Documentation
For related documentation see the following:
• Selection and Specification of Crystals for Texas Instruments USB 2.0 Devices, SLLA122
• TPS2561 Dual-Channel Precision Adjustable Current-limited Power Switches, SLVS930
• TUSB4041PAP Evaluation Module, SLLU227
12.2 Receiving Notification of Documentation Updates
To receive notification of documentation updates — go to the product folder for your device on ti.com. In the
upper right-hand corner, click the Alert me button to register and receive a weekly digest of product information
that has changed (if any). For change details, check the revision history of any revised document.
12.3 Community Resource
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of
Use.
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help
solve problems with fellow engineers.
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and
contact information for technical support.
12.4 Trademarks
PowerPAD, E2E are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.
12.5 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
12.6 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
13 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
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PACKAGE OUTLINE
PAP0064M
PowerPAD
TM
- 1.2 mm max height
SCALE 1.500
PLASTIC
PLASTICQUAD
QUADFLATPACK
FLATPACK
10.2
9.8
PIN 1 ID
64
A
B
49
48
1
12.2
TYP
11.8
10.2
9.8
33
16
17
64X
0.08
C A
32
0.27
0.17
B
60X 0.5
4X 7.5
SEE DETAIL A
1.2 MAX
C
SEATING PLANE
0.08
0.09-0.20
TYP
0 MIN
(0.15) TYP
NOTE 4
0.25
GAGE PLANE
4.44
3.64
(1)
0 -7
0.75
0.45
0.15
0.05
DETAIL A
DETAIL A
SCALE: 12
EXPOSED
THERMAL PAD
(0.15) TYP
NOTE 4
TYPICAL
4221602/A 07/2014
PowerPAD is a trademark of Texas Instruments.
NOTES:
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. Reference JEDEC registration MS-026, variation ACD.
4. Strap features may not be present,
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EXAMPLE BOARD LAYOUT
PAP0064M
PowerPAD TM - 1.2 mm max height
PLASTIC QUAD FLATPACK
( 8) NOTE 7
( 4.44)
SOLDER MASK
OPENING
SYMM
64
SOLDER MASK
DEFINED PAD
49
64X (1.5)
1
48
64X (0.3)
(0.5)
TYP
SYMM
(11.4)
60X (0.5)
(1)
TYP
33
16
( 0.2) TYP
VIA
32
17
SEE DETAIL
(0.5) TYP
METAL COVERED
BY SOLDER MASK
(1) TYP
(11.4)
LAND PATTERN EXAMPLE
SCALE:6X
0.05 MAX
ALL AROUND
METAL
SOLDER MASK
OPENING
NON SOLDER MASK
DEFINED
4221602/A 07/2014
NOTES: (continued)
5. Publication IPC-7351 may have alternate designs.
6. Solder mask tolerances between and around signal pads can vary based on board fabrication site.
7. This package is designed to be soldered to a thermal pad on the board. For more information, see Texas Instruments literature
numbers SLMA002 (www.ti.com/lit/slm002) and SLMA004 (www.ti.com/lit/slma004).
8. Size of metal pad may vary due to creepage requirement.
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EXAMPLE STENCIL DESIGN
PAP0064M
PowerPAD TM - 1.2 mm max height
PLASTIC QUAD FLATPACK
( 4.44)
BASED ON
0.127 THICK STENCIL
SEE TABLE FOR
DIFFERENT OPENINGS
FOR OTHER STENCIL
THICKNESSES
SYMM
49
64
64X (1.5)
1
48
64X (0.3)
SYMM
(11.4)
60X (0.5)
16
33
METAL COVERED
BY SOLDER MASK
32
17
(11.4)
SOLDER PASTE EXAMPLE
EXPOSED PAD
100% PRINTED SOLDER COVERAGE BY AREA
SCALE:6X
STENCIL
THICKNESS
SOLDER STENCIL
OPENING
0.1
0.127
0.152
0.178
5X5
4.44 X 4.44 (SHOWN)
4.06 X 4.06
3.75 X 3.75
4221602/A 07/2014
NOTES: (continued)
9. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
10. Board assembly site may have different recommendations for stencil design.
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PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
TUSB4041IPAP
ACTIVE
HTQFP
PAP
64
160
RoHS & Green
NIPDAU
Level-3-260C-168 HR
-40 to 85
TUSB4041I
TUSB4041IPAPR
ACTIVE
HTQFP
PAP
64
1000
RoHS & Green
NIPDAU
Level-3-260C-168 HR
-40 to 85
TUSB4041I
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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