TUSB564 datasheet(17/52 Pages) TI

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7 Detailed Description

7.1 Overview

The TUSB564-Q1 is a VESA USB Type-C Alt Mode redriving switch that supports data rates up to 8.1Gbps for

upstream facing port. This device uses 5th generation USB redriver technology. The device is used for UFP pin

assignments C and D from the VESA DisplayPort Alt Mode on USB Type-C Standard.

The TUSB564-Q1 provides several levels of receive equalization to compensate for cable and board trace loss

which if not equalized causes inter-symbol interference (ISI) when USB 3.2 or DisplayPort 1.4 signals travel

across a PCB or cable. This device requires a 3.3V power supply. The device comes in an automotive grade 2

temperature range.

For a sink application, the TUSB564-Q1 enables the system to pass both transmitter compliance and receiver

jitter tolerance tests for USB 3.2 up to 5Gbps and DisplayPort version 1.4 HBR3. The redriver 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. Set the equalization based on the

amount of insertion loss in the channels connected to the TUSB564-Q1. Independent equalization control for

each channel can be set using EQ[1:0], SSEQ[1:0], and DPEQ[1:0] pins.

The TUSB564-Q1 advanced state machine makes the device transparent to hosts and devices. After power up,

the TUSB564-Q1 periodically performs receiver detection on the TX pairs. If the TUSB564-Q1 detects a USB 3.2

receiver, the RX termination is enabled, and the TUSB564-Q1 is ready to re-drive.

www.ti.com

TUSB564-Q1

SLLSFO9A – MAY 2024 – REVISED SEPTEMBER 2024

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TUSB564 数据表(PDF) 17 Page - Texas Instruments