PM5343STXC View Datasheet(PDF) - PMC-Sierra
Part Name
Description
MFG CO.
'PM5343STXC' PDF : 198 Pages View PDF
DATA SHEET
PMC-930303
ISSUE 6
PM5343 STXC
SONET/SDH TRANSPORT OVERHEAD TRANSCEIVER
Pin Name Pin Type Pin Function
No.
LOS/
Output
RRCPFP
B1E
Output
71 Loss of signal (LOS) is active when the ring
control port is disabled. Loss of signal (LOS) is
set high when a violating period (20 ± 2.5 µs)
of consecutive all zeros patterns is detected in
the incoming stream. LOS is set low when two
valid framing words (A1, A2) are detected, and
during the intervening time (125 µs), no
violating period of all zeros patterns is
observed. LOS is updated on the rising edge
of RICLK.
The receive ring control port frame position
(RRCPFP) signal identifies bit positions in the
receive ring control port data (RRCPDAT) when
the ring control port is enabled (the enabling
and disabling of the ring control port is
controlled by a bit in the Master Control
Register). RRCPFP 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 AIS and send RDI bit
positions in the RRCPDAT stream. RRCPFP is
normally connected to the TRCPFP input of a
mate STXC in ring-based add-drop multiplexer
applications. RRCPFP is updated on the falling
edge of RRCPCLK.
55 The B1 error clock (B1E) is a return to zero
signal that pulses high for 154 ns with a
minimum low time of 154 ns for every section
bit interleaved parity error (B1) detected in the
incoming stream. Up to eight pulses may occur
on B1E per frame.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 13
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