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TUSB4041I-Q1 Datasheet(PDF) 6 Page - Texas Instruments |
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TUSB4041I-Q1 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 44 page  6 TUSB4041I-Q1 SLLSEK4B – JULY 2015 – REVISED JANUARY 2016 www.ti.com Product Folder Links: TUSB4041I-Q1 Submit Documentation Feedback 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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