PM5362TUPP-PLUS
DATA SHEET
PMC-951010
ISSUE 6
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR / PERFORMANCE MONITOR
Pin Name Type
Pin
Function
No.
The active high outgoing payload active (OPL) signal
identifies the bytes within the transport envelope frame on
the OD[7:0] bus that carry the VC3 or VC4 virtual
container(s), and the STS-1 synchronous payload
envelopes.
OPL
Input
132
In outgoing byte interface mode (OBMODE set high), and
floating mode is enabled, OPL must be set high to mark
each payload byte. OD[7:0], OTPL, OTV5, AIS and IDLE
contain valid data only for bytes in the VC3 or VC4 virtual
container(s), or the STS-1 synchronous payload
envelopes. Their contents should be ignored for bytes in
the transport overhead as indicated by a low level on the
OPL input. In locked mode, the outgoing virtual container
(synchronous payload envelope) is locked with the J1 byte
immediately following the C1 byte and OPL should be held
low. During transport overhead byte locations on the
outgoing stream, OTPL, OTV5, AIS and IDLE are set low.
OD[7:0] is set to a valid pointer with offset of 522 and all-
zeros for other transport overhead bytes. OPL is sampled
on the rising edge of SCLK.
In outgoing nibble interface mode (OBMODE set low), and
floating mode is enabled, OPL must be set high to mark
the more significant nibble of each payload byte. OPL is
ignored during the less significant nibble. OD[3:0], OTPL,
OTV5, AIS and IDLE contain valid data only for bytes in
the VC3 or VC4 virtual container(s), or the STS-1
synchronous payload envelopes. Their contents should be
ignored for bytes in the transport overhead as indicated by
a low level on the OPL input. In locked mode, the outgoing
virtual container (synchronous payload envelope) is locked
with the J1 byte immediately following the C1 byte and
OPL should be held low. During transport overhead byte
locations on the outgoing stream, OTPL, OTV5, AIS and
IDLE are set low. OD[3:0] is set to a valid pointer with
offset of 522 and all-zeros for other transport overhead
bytes. OPL is ignored during the less significant nibble
timeslots. OPL is sampled on the rising edge of NSCLK.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
23
PMC [ PMC-SIERRA, INC ]
