XRT72L56 Datasheet, PDF (32/486 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
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PRELIMINARY
PIN DESCRIPTION FOR THE XRT72L56
PIN #
D19
D20
D21
D22
D23
D24
D25
D26
E1
E2
E3
E4
E23
E24
E25
E26
F1
F2
F3
F4
F23
F24
F25
F26
PIN NAME
TxFrame[5]
TxOHFrame[5]/
TxHDLCClk[5]
TxNib1[5]/
TxHDLCDat1[5]
RxLOS[2]
RxNib2[2]/
RxHDLCDat2[2]
RxOHClk[2]/
RxHDLCClk[2]
RxOHEnable[2]/
RxHDLCDat5[2]
TxNibFrame[2]/
ValFCS[2]
RxRed[2]
LLOOP[2]
TMS
TDI
RxOH[2]/
RxHDLCDat6[2]
TxNibClk[2]/
SndFCS[2]
TxOHInd[2]/
TxHDLCDat6[2]
TxOHClk[2]
REQ2]
RLOOP[2]
TAOS[2]
TDO
TxFrame[2]
TxOHEnable[2]/
TxHDLCDat7[2]
TxAISEn[2]
TxOH[2]/
TxHDLCDat5[2]
TYPE
O
O
See Description for Pin B12
See Description for Pin B13
DESCRIPTION
I
See Description for Pin D14
O See Description for Pin A8
O See Description for Pin A10
O See Description for Pin B10
O See Description for Pin A17
O See Description for Pin A12
O See Description for Pin A4
O See Description for Pin B2
I
Test Mode Select: Boundary Scan Mode Select input
I
Test Data In: Boundary Scan Test data input
O See Description for Pin B11
O See Description for Pin B20
I
O See Description for Pin A21
I
O See Description for Pin A13
O See Description for Pin A1
O See Description for Pin C3
O See Description for Pin C4
O Test Data Out: Boundary Scan test data output
O See Description for Pin B12
O See Description for Pin A14
I
I
See Description for Pin A22
I
See Description for Pin A15
13