TUSB1104 datasheet(18/55 Pages) TI

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7 Detailed Description

7.1 Overview

The TUSB1104 is a 10 Gbps USB 3.2 x2 linear redriver for USB-C applications enabling up to 20 Gbps total data

throughput. The TUSB1104 supports both USB 3.2 Gen2 (10 Gbps) and Gen1 (5 Gbps) as well as USB 3.2 low

power states (Disconnect, U1, U2, and U3). The TUSB1104 is intended to reside between a Host and a USB-C

receptacle or between a USB device and a USB-C receptacle. The TUSB1104 will automatically detect whether

or not the interface is operating at USB 3.2 x2 or x1. If it determines the USB interface is operating at USB 3.2

x1, then it will disable the unused lane to conserve power.

The TUSB1104 supports up to 16 receiver equalization settings controlled by either pin-strap pins or through I2C

registers. The USB connector facing receivers (CRX1 and CRX2) support three equalization modes: Fixed EQ,

Fast AEQ, and Full AEQ. Selection between these modes is done through either pin-strap pins or through I2C

regisrers. The other receivers (SSTX1/2) only support Fixed EQ.

The TUSB1104 operates as a linear redriver for signals traversing from the SSTX1/2 receivers towards CTX1/2

transmitters. It can operate as either a linear redriver or limited redriver for signals traversing from CRX1/2

receivers towards SSRX1/2 transmitters. TUSB1104 defaults to linear redriver but can be enabled for limited

redriver by I2C register. When enabled for limited redriver, the SSRX1/2 transmitter support four levels of

pre-shoot and four-levels of de-emphasis.

TUSB1104

SLLSFL1 – APRIL 2022

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