XRT72L54 Datasheet, PDF (43/484 Pages) Exar Corporation – FOUR CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

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PRELIMINARY
PIN DESCRIPTION
PIN #
PIN NAME
U7
TxOHIns[3]/
TxHDLCDat4[3]
U8
GND
U9
RxOHEnable[2]/
RxHDLCDat5[2]
U10
VDD
U11
TxSer[2]/
SndMsg[2]
U12
TxNib2[2]/
TxHDLCDat2[2]
U13
GND
U14
TxFrame[2]
U15
VDD
U16
RxNib1[3]/
RxHDLCDat1[3]
U17
GND
U18
RxClk[3]
U19
RxFrame[2]
U20
TestMode
V1
RxLOS[2]
V2
LLOOP[3]
V3
TAOS[3]
V4
RLOOP[3]
V5
Req[3]
V6
TxAISEn[2]
V7
TxOH[2]/
TxHDLCDat5[2]
V8
RxOHFrame[3]/
RxHDLCDat4[3]
V9
RxOHClk[3]/
RxHDLCClk[3]
V10 TxOHEnable[3]/
TxHDLCDat7[3]
V11
TxSer[3]/
SndMsg[3]
XRT72L54
FOUR CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. P1.1.2
TYPE
I
****
O
****
I
I
****
O
****
O
****
O
O
***
O
O
O
O
O
I
I
O
O
O
I
I
DESCRIPTION
See Description for Pin C14
Ground
See Description for Pin B13
Power Supply +3.3v ± 5%
See Description for Pin E18
See Description for Pin C20
Ground
See Description for Pin E20
Power Supply +3.3v ± 5%
See Description for Pin G20
Ground
See Description for Pin D20
See Description for Pin F20
Factory Test Pin:
The user should tie this pin to Ground.
See Description for Pin C4
See Description for Pin C7
See Description for Pin C6
See Description for Pin B7
See Description for Pin A5
See Description for Pin B15
See Description for Pin A15
See Description for Pin A13
See Description for Pin D12
See Description for Pin B14
See Description for Pin E18
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