XRT4000 Datasheet, PDF (9/46 Pages) Exar Corporation – Universal Multiprotocol Serial Interface

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-