8.1 Overview

The TUSB1042I is a USB Type-C redriving switch supporting data rates up to 10 Gbps. This device utilizes 5^th generation USB redriver technology.

The TUSB1042I provides several levels of receive equalization to compensate for inter-symbol interference (ISI) due to cable and board trace loss when USB 3.1 Gen1/Gen2 signals travel across a PCB or cable. This device requires a 3.3-V power supply. It comes in the industrial temperature range.

For a host or device application the TUSB1042I enables the system to pass both transmitter compliance and receiver jitter tolerance tests for USB 3.1 Gen1/Gen2. The re-driver recovers incoming data by applying equalization that compensates for channel loss, and drives out signals with a high differential voltage. Each channel has a receiver equalizer with selectable gain settings. The equalization should be set based on the amount of insertion loss before or after the TUSB1042I receivers. Independent equalization control for each channel can be set using EQ[1:0] and SSEQ[1:0] pins.

The TUSB1042I advanced state machine makes it transparent to hosts and devices. After power up, the TUSB1042I. periodically performs receiver detection on the TX pairs. If it detects a USB 3.1 Gen1/Gen2 receiver, the RX termination is enabled, and the TUSB1042I is ready to re-drive.

The device ultra-low-power architecture operates at a 3.3-V power supply and achieves enhanced performance. The automatic LFPS de-emphasis control further enables the system to be USB3.1 compliant.