SCAA144 October   2023 TUSB1104

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2USB 3.2 Gen 2x2
    1. 2.1 What is USB 3.2 Gen 2x2?
    2. 2.2 TUSB1104 Introduction
    3. 2.3 USB 3.2 Gen 2x2 Application With TUSB1104
  6. 3Summary
  7. 4References

TUSB1104 Introduction

TI 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 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.

TUSB1104 configured for USB 3.2 x2 mode will determine if the link is operating in USB 3.2 x2 or in USB 3.1 x1. If the link is USB 3.2 x2, then TUSB1104 will operate with one port operating as a USB 3.2 x1 port and the remaining port following the lead of the other port. The port functioning as a USB 3.1 x1 port is called the config lane. The determination of the config lane is based solely on the Type-C orientation. For normal orientation (FLIP = L), Port 1 is the config lane. For the flipped orientation (FLIP = H), Port 2 is the config lane. Table 2-2 shows the selection of config lane.

Table 2-2 TUSB1104 Config Lane Selection
Flip Configure Lane Non-Configure Lane
L CRX1-SSRX1 CRX2-SSRX2
SSTX1-CTX1 SSTX2-CTX2
H CRX2-SSRX2 CRX1-SSRX1
SSTX2-CTX2 SSTX1-CTX1