
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
520
Figure 44 RRCP Port Functional Timing
18.11 Transmit Ring Control Port Timing (TRCP)
The functional timing of the transmit Ring Control Port is identical to that of the receive ring
control port. The TRCP port serially inputs the section, line, and path defects to be sent on the
transmit direction. The TRCP port is usually connected to the RRCP port of a mate SPECTRA-
9953 device. TRCP port is not restricted to RRCP port as long as the format and the timings
between TRCPCLK, TRCPFP and TRCPDAT[4:1] are respected. Sampling TRCPFP high with
TRCPCLK identifies the OOF defect on TRCPDAT. TRCPFP must be asserted to initiate
TRCPDAT capture. Only the first 2352 bits after TRCPFP assertion are considered valid and
part of the ring control port.
18.12 Add bus Transmit AIS Timing
The Add bus path AIS port allows the user to insert path AIS. Sampling TPAISFP high with
SYSCLK identifies STS-1/STM-0 path #1 on TPAIS[4:1]. TPAISFP must be asserted to initiate
TPAIS capture. Each TPAIS[N] carries path AIS for a group of 48 paths. TPAIS[N] carries path
AIS for slice#N,1twelve paths, followed by slice#N,2, then slice#N,3, and finally the twelfth
path AIS for slice#N,4. The following figure shows the functional timing of the Add AIS port.
48 RRCPCLK
RRCPFP
...
...
1 RRCPCLK
1 frame (125 us)
RRCPDAT, RALM complete frame
RRCPDAT[X]
path48
path1
path2
path48
section/line
path1
path2
...
...
24
240
sectin/line
RALM[X]
path48
path1
path2
path48
path1
path2
RRCPCLK
RRCPDAT[X]
RRCPFP
RALM[X]
OOF
LOF
LOS
LAIS
LRDI
APSBF
STIU
STIM
SDBER
low level
SFBER