XRT4000 View Datasheet(PDF) - Exar Corporation

Part Name

Description

Manufacturer

XRT4000

Universal Multiprotocol Serial Interface

Exar Corporation 

XRT4000

Pin Symbol

DTE

DCE Type Function

#

Mode Mode

88

TR3B

TXCB TXCB

I/O DCE Mode - Transmitter 3 - Positive Data Differential

Output to line

DTE Mode - Receiver 3 - Positive Data Differential Input

from line

89

GND

Analog GND for Receiver 1, 2, 3

90

RX3D

D_TXC

D_X

O DTE Mode - Receiver 3- Digital Data Output to equipment

DCE Mode - Not used

91

VDD

Digital VDD for Receiver 2, 3; Connect to +5V

92

GND

Digital GND for Receiver 2, 3

93

RX2D D_RXC D_SCTE O Receiver 2 - Digital Data Output to equipment

94

VSS

Analog VSS for Receiver 1, 2, 3; Connect to -6V

95

RX2B

RXCB SCTEB

I Receiver 2 - Positive Data Differential Input from line

96

RX2A

RXCA SCTEA

I Receiver 2 - Negative Data Differential Input from line

97

RX1A

RXDA TXDA

I Receiver 2 - Negative Data Differential Input from line

98

RX1B

RXDB TXDB

I Receiver 2 - Positive Data Differential Input from line

99

VDD

Analog VDD for Receiver 1, 2, 3; Connect to +5V

100 RX1D D_RXD D_TXD

O Receiver 1 - Digital Data Output to equipment

Note: An asterisk (*) following a pin symbol indicates that the pin is active low.

Names begining with D_ are digital signals.

Names ending with B and A are the positive and negative polarities of differential signals respectively.

`

Rev. 1.00

-9-

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