PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Pin Name
Type
Pin
No.
Function
OD[8]
OD[9]
Output E23
F22
The outgoing data bus (OD[15:8]) carries the
STM-1 #2 SONET/SDH frame data in byte serial
format.
OD[10]
OD[11]
OD[12]
OD[13]
OD[14]
OD[15]
G21
H20
G22
H21
G23
H22
In outgoing STM-1 (STS-3) interface mode
(OHSMODEB set high), OD[15] is the most
significant bit, corresponding to bit 1 of each
serial word, the bit transmitted first. OD[8] is the
least significant bit, corresponding to bit 8 of
each serial word, the last bit transmitted.
OD[15:8] is set to all-zeros at transport overhead
bytes, except for the A1 and A2 framing bytes
and the H1 and H2 pointer bytes. Pointer offset
is determined by the STP Outgoing Pointer MSB
and LSB registers. The OD[15:8] bus is updated
on the rising edge of SCLK.
In outgoing STM-4 (STS-12) interface mode
(OHSMODEB set low), the OD[15:8] bus is
unused and all bus signals are invalid.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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