SN65LVPE512 Datasheet, PDF (16/32 Pages) Texas Instruments – Dual-Channel USB 3.0 Redriver, Equalizer

SN65LVPE512
SLLSEH7B – DECEMBER 2013 – REVISED JUNE 2016
8 Detailed Description
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8.1 Overview
When 5-Gbps SuperSpeed USB signals travel across a PCB or cable, signal integrity degrades due to loss and
inter-symbol interference. The SN65LVPE512 recovers incoming data by applying equalization that compensates
for channel loss, and drives out signals with a high differential voltage. This extends the possible channel length,
and enables systems to pass USB 3.0 compliance.
The SN65LVPE512 is located at the Host side, after power up, the SN65LVPE512 periodically performs receiver
detection on the TX pair. If it detects a SuperSpeed USB receiver, the RX termination is enabled, and the
SN65LVPE512 is ready to re-drive.
The receiver equalizer has three gain settings that are controlled by terminal EQ: 0 dB, 7 dB, and 15 dB. The
equalization must be set based on amount of insertion loss in the channel before the SN65LVPE512. Likewise,
the output driver supports configuration of De-Emphasis and Output Swing (terminals DE and OS).
8.2 Functional Block Diagram
CM/EN_RXD
Controller_RX1+
Controller_RX1-
Receiver/
Equalizer
CHANNEL 1
Detect
Driver
Connector_TX1+
Connector_TX1-
EQ1
EQ2
EQ
CNTRL
V_{TX_CM_DC}
DE1
DE2
Controller_TX2+
Controller_TX2-
DEMP
CNTRL
Driver
CHANNEL 2
Receiver/
Equalizer
Connector_RX2+
Connector_RX2-
Detect
VTX_CM_DC
OS
Cntrl.
OS1 OS2
CM/EN_RXD
Copyright © 2016, Texas Instruments Incorporated
8.3 Feature Description
8.3.1 Controller- and Connector-Side Pins
The SN65LVPE512 features a link state machine that makes the device transparent on the USB 3.0 bus while
minimizing power. The state machine relies on the system host or device controller to be connected to the pins
named Controller. The pins labeled connector must be connected to the USB 3.0 receptacle or captive cable.
Multiple SN65LVPE512 devices may be used in series.
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