
PM5317 SPECTRA-9953 Telecom Standard Product Data Sheet
Release
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2000741, Issue 5
500
Table 23 Functional Description of Path ERDI (PERDIINS) Encoding
RDIEN
PLOPTR
or
PAISPTR
PUNEQ or
PTIU or
PTIM
PPLU or
PPLM
Path ERDI[2:0]
(PERDIINS)
1
Don’t care
Don’t care
101
1
Don’t care
110
1
010
0
0
0
0
001
1
Don’t care
Don’t care
100
1
0
Don’t care
Don’t care
000
The Received Path Alarm Block individually detects each BIP-P when different of zero. The P-
BIP is sent out on the RRCP port and fed back to the transmit side to be returned as REI-P to the
far-end device.
17.10.3
Multiplexer Block
The Multiplexer Block determines the source of the APS, line RDI insertion indication
(LRDIINS), line REI, path ERDI insertion indication (PERDIINS), and path REI defect
indications to be inserted in the remote data stream.
When the ring control port is enabled (by setting the TLRCPEN register configuration for line
signals and the TPRCPEN register configuration bit for path signals to one), the defect
indications are sourced from the transmit ring control port. When the ring control port is
disabled (by setting the the configuration bit to zero), the defect indications are sourced from the
defects detected in receive data stream. The line and each path are controlled independently.
The Multiplexer Block also controls the persistency of the LRDI insertion indication
(LRDIINS) and PERDI insertion indication (PERDIINS) in the transmit data stream.
When LRDI22 is set to one, a new line RDI insertion indication (LRDIINS) value must be
persistent for at least 22 frames. When LRDI22 is set to zero, a new line RDI insertion
indication (LRDIINS) value must be persistent for at least 12 frames.
When PERDI22 is set to one, a new path ERDI insertion indication (PERDIINS) value must be
persistent for at least 22 frames. When PERDI22 is set to zero, a new path ERDI insertion
indication (PERDIINS) value must be persistent for at least 12 frames.