
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
228
NOSYNC
The synchronization disable (NOSYNC) bit disables the synchronization of the trail trace
message in algorithm 1 and algorithm 2. When NOSYNC is set to logic 1, no
synchronization is done on the trail trace message. The bytes of the trail trace message are
written in the captured page as in a circular buffer. When NOSYNC is set to logic 0,
synchronization is done on the trail trace message. See SYNC_CRLF to determine how
synchronization is handled when NOSYNC = 0.
PER5
The message persistency (PER5) bit selects the number of multi-frames (messages) a trail
trace message must receive in order to be declared persistent in algorithm 2. When PER5 is
set to logic 1, the same trail trace message must be received for 5 consecutive multi-frames
to be declared persistent. When PER5 is set to logic 0, the same trail trace message must be
received for 3 consecutive multi-frames to be declared persistent.
ZEROEN
The all zero message enable (ZEROEN) bit selects if the all zero messages are validated or
not against the expected message in algorithm 1 and algorithm 2. When ZEROEN is set to
logic 1, all zero captured messages in algorithm 1 and all zero accepted messages in
algorithm 2 are validated against the expected message. A match is declared when both the
captured/accepted message and the expected message are all zero. When ZEROEN is set
to logic 0, all zero captured messages in algorithm 1 and all zero accepted messages in
algorithm 2 are not validated against the expected message but are considered match. A
match is declared when the captured/accepted message is all zero regardless of the expected
message.
SYNC_CRLF
The synchronization on CR/LF characters (SYNC_CRLF) bit selects if the current
algorithm (except algo3) synchronizes on the CR/LF ASCII characters or on the byte with
its MSB set high. When SYNC_CRLF is set to logic 1, the current algorithm synchronizes
when it receives a byte containing the ASCII character “CR” (carriage return) followed by a
byte containing “LF” (line feed). The current active byte then becomes the last byte of the
message. When SYNC_CRLF is set to 0, the current algorithm synchronizes when
receiving a byte with its MSB set to logic 1. The current active byte then becomes the first
byte of the message.