Clock and Reset Signals |
GRSTz |
18 |
I PU |
Global power reset. This reset brings all of the TUSB8041-Q1 internal registers to their default states. When GRSTz 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 1-MΩ feedback resistor is required between XI and XO. |
XO |
29 |
O |
Crystal output. This pin is the crystal output for the internal oscillator. If XI is driven by an external oscillator this pin may be left unconnected. When using a crystal a 1-MΩ feedback resistor is required between XI and XO. |
USB Upstream Signals |
|
USB_SSTXP_UP |
23 |
O |
USB SuperSpeed transmitter differential pair (positive) |
USB_SSTXM_UP |
24 |
O |
USB SuperSpeed transmitter differential pair (negative) |
USB_SSRXP_UP |
26 |
I |
USB SuperSpeed receiver differential pair (positive) |
USB_SSRXM_UP |
27 |
I |
USB SuperSpeed receiver differential pair (negative) |
USB_DP_UP |
21 |
I/O |
USB High-speed differential transceiver (positive) |
USB_DM_UP |
22 |
I/O |
USB High-speed differential transceiver (negative) |
USB_R1 |
32 |
I |
Precision resistor reference. A 9.53-kΩ ±1% resistor should be connected between USB_R1 and GND. |
USB_VBUS |
16 |
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 Downstream Signals |
|
USB_SSTXP_DN1 |
35 |
O |
USB SuperSpeed transmitter differential pair (positive) |
USB_SSTXM_DN1 |
36 |
O |
USB SuperSpeed transmitter differential pair (negative) |
USB_SSRXP_DN1 |
38 |
I |
USB SuperSpeed receiver differential pair (positive) |
USB_SSRXM_DN1 |
39 |
I |
USB SuperSpeed receiver differential pair (negative) |
USB_DP_DN1 |
33 |
I/O |
USB High-speed differential transceiver (positive) |
USB_DM_DN1 |
34 |
I/O |
USB High-speed differential transceiver (negative) |
PWRCTL1/BATEN1 |
4 |
I/O, PD |
USB Port 1 Power On Control for Downstream Power/Battery Charging Enable. The pin is used for control of the downstream power switch for Port 1. |
In addition, the value of the pin is sampled at the de-assertion 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 |
OVERCUR1z |
14 |
I, PU |
USB Port 1 Over-Current Detection. This pin is used to connect the over current output of the downstream port power switch for Port 1. |
|
0 = An over current event has occurred |
|
1 = An over current event has not occurred |
This pin can be left unconnected if power management is not implemented. If power management is enabled, the external circuitry needed should be determined by the power switch. |
USB_SSTXP_DN2 |
43 |
O |
USB SuperSpeed transmitter differential pair (positive) |
USB_SSTXM_DN2 |
44 |
O |
USB SuperSpeed transmitter differential pair (negative) |
USB_SSRXP_DN2 |
46 |
I |
USB SuperSpeed receiver differential pair (positive) |
USB_SSRXM_DN2 |
47 |
I |
USB SuperSpeed receiver differential pair (negative) |
USB_DP_DN2 |
41 |
I/O |
USB High-speed differential transceiver (positive) |
USB_DM_DN2 |
42 |
I/O |
USB High-speed differential transceiver (negative) |
PWRCTL2/BATEN2 |
3 |
I/O, PD |
USB Port 2 Power On Control for Downstream Power/Battery Charging Enable. The pin is used for control of the downstream power switch for Port 2. |
In addition, the value of the pin is sampled at the de-assertion 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 |
OVERCUR2z |
15 |
I, PU |
USB Port 2 Over-Current Detection. This pin is used to connect the over current output of the downstream port power switch for Port 2. |
|
0 = An over current event has occurred |
|
1 = An over current event has not occurred |
This pin be left unconnected if power management is not implemented. If power management is enabled, the external circuitry needed should be determined by the power switch. |
USB_SSTXP_DN3 |
51 |
O |
USB SuperSpeed transmitter differential pair (positive) |
USB_SSTXM_DN3 |
52 |
O |
USB SuperSpeed transmitter differential pair (negative) |
USB_SSRXP_DN3 |
54 |
I |
USB SuperSpeed receiver differential pair (positive) |
USB_SSRXM_DN3 |
55 |
I |
USB SuperSpeed receiver differential pair (negative) |
USB_DP_DN3 |
49 |
I/O |
USB High-speed differential transceiver (positive) |
USB_DM_DN3 |
50 |
I/O |
USB High-speed differential transceiver (negative) |
PWRCTL3/BATEN3 |
1 |
I/O, PD |
USB Port 3 Power On Control for Downstream Power/Battery Charging Enable. The pin is used for control of the downstream power switch for Port 3. |
In addition, the value of the pin is sampled at the de-assertion 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 |
OVERCUR3z |
12 |
I, PU |
USB Port 3 Over-Current Detection. This pin is used to connect the over current output of the downstream port power switch for Port 3. |
|
0 = An over current event has occurred |
|
1 = An over current event has not occurred |
This pin can be left unconnected if power management is not implemented. If power management is enabled, the external circuitry needed should be determined by the power switch. |
USB_SSTXP_DN4 |
58 |
O |
USB SuperSpeed transmitter differential pair (positive) |
USB_SSTXM_DN4 |
59 |
O |
USB SuperSpeed transmitter differential pair (negative) |
USB_SSRXP_DN4 |
61 |
I |
USB SuperSpeed receiver differential pair (positive) |
USB_SSRXM_DN4 |
62 |
I |
USB SuperSpeed receiver differential pair (negative) |
USB_DP_DN4 |
56 |
I/O |
USB High-speed differential transceiver (positive) |
USB_DM_DN4 |
57 |
I/O |
USB High-speed differential transceiver (negative) |
PWRCTL4/BATEN4 |
64 |
I/O, PD |
USB Port 4 Power On Control for Downstream Power/Battery Charging Enable. The pin is used for control of the downstream power switch for Port 4. |
In addition, the value of the pin is sampled at the de-assertion 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 |
OVERCUR4z |
11 |
I, PU |
USB Port 4 Over-Current Detection. This pin is used to connect the over current output of the downstream port power switch for Port 4. |
|
0 = An over current event has occurred |
|
1 = An over current event has not occurred |
This pin can be left unconnected if power management is not implemented. If power management is enabled, the external circuitry needed should be determined by the power switch. |
I2C/SMBUS Signals |
|
SCL/SMBCLK |
6 |
I/O, PD |
I2C clock/SMBus clock. Function of pin depends on the setting of the SMBUSz input. |
|
When SMBUSz = 1, this pin acts as the serial clock interface for an I2C EEPROM. |
|
When SMBUSz = 0, this pin acts as the serial clock interface for an SMBus host. |
Can be left unconnected if external interface not implemented. |
SDA/SMBDAT |
5 |
I/O, PD |
I2C data/SMBus data. Function of pin depends on the setting of the SMBUSz input. |
|
When SMBUSz = 1, this pin acts as the serial data interface for an I2C EEPROM. |
|
When SMBUSz = 0, this pin acts as the serial data interface for an SMBus host. |
Can be left unconnected if external interface not implemented. |
SMBUSz/SS_SUSPEND |
7 |
I/O, PU |
I2C/SMBus mode select/SuperSpeed USB Suspend Status. The value of the pin is sampled at the de-assertion of reset set I2C or SMBus mode as follows: |
|
1 = I2C Mode Selected |
|
0 = SMBus Mode Selected |
Can be left unconnected if external interface not implemented. |
After reset, this signal indicates the SuperSpeed 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. |
Test and Miscellaneous Signals |
FULLPWRMGMTz/ SMBA1/SS_UP |
8 |
I/O, PD |
Full power management enable/SMBus address bit 1/SuperSpeed USB Connection Status Upstream port. |
The value of the pin is sampled at the de-assertion of reset to set the power switch control follows: |
|
0 = Power switching and over current inputs supported |
|
1 = Power switching and over current inputs not supported |
Full power management is the ability to control power to the downstream ports of the TUSB8041-Q1 using PWRCTL[4:1]/BATEN[4:1]. |
When SMBus mode is enabled using SMBUSz, this pin sets the value of the SMBus slave address bit 1. |
Can be left unconnected if full power management and SMBus are not implemented. |
After reset, this signal indicates the SuperSpeed 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 SuperSpeed USB capable port. |
Note: Power switching must be supported for battery charging applications. |
PWRCTL_POL |
9 |
I/O, PU |
Power Control Polarity. |
The value of the pin is sampled at the de-assertion of reset to set the polarity of PWRCTL[4:1]. |
|
0 = PWRCTL polarity is active low |
|
1 = PWRCTL polarity is active high |
GANGED/SMBA2/ HS_UP |
10 |
I/O, PD |
Ganged operation enable/SMBus Address bit 2/HS Connection Status Upstream Port. |
The value of the pin is sampled at the de-assertion of reset to set the power switch and over current detection mode as follows: |
|
0 = Individual power control supported when power switching is enabled |
|
1 = Power control gangs supported when power switching is enabled |
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. |
AUTOENz/ HS_SUSPEND |
13 |
I/O, PU |
Automatic Charge Mode Enable/HS Suspend Status. |
The value of the pin is sampled at the de-assertion of reset to determine if automatic mode is enabled as follows: |
|
0 = Automatic Mode is enabled on ports that are enabled for battery charging when the hub is unconnected. Please 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. |
TEST |
17 |
I, PD |
This pin is reserved for factory test. |
Power and Ground Signals |
VDD |
19, 25, 37, 45 53, 60, 63 |
PWR |
1.1-V power rail |
VDD33 |
2, 20, 31, 48 |
PWR |
3.3-V power rail |
VSS |
THERMAL PAD |
PWR |
Ground. Thermal pad must be connected to ground. |
NC |
28, 40 |
— |
No connect, leave floating |