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TUSB4041I-Q1 Datasheet(PDF) 6 Page - Texas Instruments

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Part # TUSB4041I-Q1
Description  Four-Port USB 2.0 Hub
Download  44 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TUSB4041I-Q1 Datasheet(HTML) 6 Page - Texas Instruments

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6
TUSB4041I-Q1
SLLSEK4B – JULY 2015 – REVISED JANUARY 2016
www.ti.com
Product Folder Links: TUSB4041I-Q1
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Copyright © 2015–2016, Texas Instruments Incorporated
Pin Functions (continued)
PIN
I/O(1)
TYPE(1)
DESCRIPTION
NAME
NO.
PWRCTL3/BATEN3
1
I/O
PD
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.
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
PWRCTL4/BATEN4
64
I/O
PD
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.
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
I/O
USB high-speed differential transceiver (negative)
USB_DM_DN2
42
USB_DM_DN3
50
USB_DM_DN4
57
USB_DP_DN1
33
I/O
USB high-speed differential transceiver (positive)
USB_DP_DN2
41
USB_DP_DN3
49
USB_DP_DN4
56
I2C AND SMBus SIGNALS
SCL/SMBCLK
6
I/O
PD
I2C clock/SMBus clock. The function of this pin depends on the setting of the
SMBUSz input.
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.
SDA/SMBDAT
5
I/O
PD
I2C data/SMBus data. The function of this pin depends on the setting of the SMBUSz
input.
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.
SMBUSz
7
I/O
PU
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
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-Q1. Because of this behavior,
TI recommends not to tie directly to supply, but instead pull up or pull down using
external resistor.


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