PM5342 Datasheet, PDF (62/558 Pages) PMC-Sierra, Inc – SONET/SDH Payload Extractor/Aligner

DATA SHEET
PMC-970133
ISSUE 4
PM5342 SPECTRA-155
SONET/SDH PAYLOAD EXTRACTOR/ALIGNER
Pin Name Pin
PIN Function
Type No.
TLRDI/
Input U6
The active high transmit line remote defect
indication (TLRDI) signal controls the insertion
of a remote defect indication in the outgoing
stream when the ring control port is disabled.
When TLRDI is set high, bits 6, 7, and 8 of the
K2 byte are set to the pattern 110. Line RDI
may also be inserted using the LRDI bit in the
TLOP Control Register, or upon detection of
loss of signal, loss of frame, or line AIS in the
receive stream, using the bits in the
SPECTRA-155 Line RDI Control Register. The
TLRDI input takes precedence over the TTOH
and TTOHEN inputs. TLRDI is sampled on the
rising edge of TCLK.
TRCPFP
The transmit ring control port frame position
(TRCPFP) signal identifies bit positions in the
transmit ring control port data (TRCPDAT) when
the ring control port is enabled (the enabling
and disabling of the ring control port is
controlled by a bit in the SPECTRA-155
Section/Line Control/Enable Register).
TRCPFP is high during the filtered K1, K2 bit
positions, the change of APS value bit position,
the protection switch byte failure bit position,
and the send line AIS and send line RDI bit
positions in the TRCPDAT stream. TRCPFP is
normally connected to the RRCPFP output of a
mate SPECTRA-155 in ring-based add-drop
multiplexer applications. TRCPFP is sampled
on the rising edge of TRCPCLK.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 40