TUSB1046AI-DCI datasheet(14/48 Pages) TI1

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TUSB1046A-DCI

SLLSF13 – JUNE 2017

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8 Detailed Description

8.1 Overview

The TUSB1046A-DCI is a VESA USB Type-C Alt Mode redriving switch supporting data rates up to 8.1 Gbps for

downstream facing port. These devices utilize 5th generation USB redriver technology. The devices are utilized

for DFP configurations C, D, E, and F from the VESA DisplayPort Alt Mode on USB Type-C.

The TUSB1046A-DCI provides several levels of receive equalization to compensate for cable and board trace

loss due to inter-symbol interference (ISI) when USB 3.1 Gen1/Gen2 or DisplayPort 1.4 signals travel across a

PCB or cable. This device requires a 3.3-V power supply. It comes in a commercial temperature range and

industrial temperature range.

For a host application the TUSB1046A-DCI enables the system to pass both transmitter compliance and receiver

jitter tolerance tests for USB 3.1 Gen1/Gen2 and DisplayPort version 1.4 HBR3. 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 the TUSB1046A-DCI receivers. Independent equalization control for

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

The TUSB1046A-DCI advanced state machine makes it transparent to hosts and devices. After power up, the

TUSB1046A-DCI. 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 TUSB1046A-DCI 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.

TUSB1046AI-DCI 데이터시트(PDF) 14 Page - Texas Instruments