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TUSB8043 Datasheet(PDF) 7 Page - Texas Instruments

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Part # TUSB8043
Description  Four-Port USB 3.1 Gen1 Hub
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TUSB8043 Datasheet(HTML) 7 Page - Texas Instruments

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TUSB8043
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Copyright © 2017, Texas Instruments Incorporated
Pin Functions (continued)
PIN
I/O
DESCRIPTION
NAME
NO.
OVERCUR4z
43
I, PU
USB Port 4 Over-Current Detection. This pin is typically connected to 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
When GANGED power management is enabled, this pin or one of the other OVERCURz pins
must be connected to the over current output of the power switch or circuit which detects the
over current conditions. For the case when another OVERCURz pin is used, this pin can be
left unconnected.
I2C/SMBUS I2C Signals
SCL/SMBCLK
38
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
37
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
39
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 stsOutputEn bit in the Additional Feature Configuration register. When
enabled, a value of 1 indicates the connection is suspended.
Test and Miscellaneous Signals
FULLPWRMGMTz /
FULLAUTOz /
SMBA1/SS_UP /
CLKOUT_ENz
40
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
TUSB8043 using PWRCTL[4:1]/BATEN[4:1].
If BATENx = 1 on any port, full power management must be enabled so the value of the
terminal is sampled at the de-assertion to initialize the value of the FULLAUTOz bit.
When AUTOENz = 0 and FULLAUTOz = 0: all ACP modes are supported.
When AUTOENz = 0 and FULLAUTOz = 1:only highest current ACP mode is used in auto
mode.
When SMBus mode is enabled, 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 stsOutputEn bit in 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
41
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


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