XRT72L56 Datasheet, PDF (44/486 Pages) Exar Corporation – SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

XRT72L56
SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. P1.1.2
PIN DESCRIPTION FOR THE XRT72L56
PIN #
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
AD16
AD17
AD18
AD19
AD20
AD21
AD22
AD23
AD24
AD25
PIN NAME
REQ[4]
RLOOP[4]
TAOS[4]
NC
LLOOP[1]
TAOS[1]
EncoDis[1]
TxLev[1]
NC
NC
RxOHClk[1]/
RxHDLCClk[1]
RxNib1[1]/
RxHDLCDat1[1]
RxFrame[1]
TxOH[1]/
TxHDLCDat5[1]
TxNib1[1]/
TxHDLCDat1[1]
TxNibFrame[1]/
ValFCS[1]
TxOHEnable[1]/
TxHDLCDat7[1]
RxNib1[4]/
RxHDLCDat1[4]
RxOHInd[4]
RxOHFrame[4]/
RxHDLCDat4[4]
TxNibFrame[4]
TxOHClk[4]
TxOHIns[4]/
TxHDLCDat4[4]
TxNib0[4]/
TxHDLCDat0[4]
TxNib2[3]/
TxHDLCDat2[5]
TYPE
O
O
O
See Description for Pin A1
See Description for Pin C3
See Description for Pin C4
DESCRIPTION
O See Description for Pin B2
O See Description for Pin C4
O See Description for Pin B4
O See Description for Pin B5
O See Description for Pin B10
O See Description for Pin A25
O See Description for Pin A9
I
See Description for Pin A15
I
See Description for Pin D14
O See Description for Pin A12
O See Description for Pin A14
I
O See Description for Pin A25
O See Description for Pin C11
O See Description for Pin A11
O See Description for Pin A12
O See Description for Pin A13
I
See Description for Pin A16
I
See Description for Pin A23
I
See Description for Pin C22
25
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PRELIMINARY