PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
NOSYNC:
The synchronization disable (NOSYNC) bit disables the synchronization of the tail trace
message in algorithm 1 and algorithm 2. When NOSYNC is set to logic 1, no synchronization
is done on the tail trace message. The bytes of the tail 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 tail trace message. When LENGTH16 is set to logic 1, the tail trace message is
synchronize on the MSB of the tail trace message. The byte with its MSB set high is placed
in the first byte location of the captured page. When LENGTH16 is set to logic 0, the tail
trace message is synchronize on the CR/LF (CR = 0Dh, LF = 0Ah) characters of the tail trace
message. The byte following the CR/LF bytes is placed in the first byte location of the
captured page.
PER5:
The message persistency (PER5) bit selects the number of multi-frames a tail trace message
must be received in order to be declared persistent in algorithm 2. When PER5 is set to logic
1, the same tail trace message must be receive for 5 consecutive multi-frames to be declared
persistent. When PER5 is set to logic 0, the same tail trace message must be received for 3
consecutive multi frame to be declared persistent.
ZEROEN:
The all zero message enable (ZEROEN) bit selects if the all zero message are validated or
not against the expected message in algorithm 1 and algorithm 2. When ZEROEN is set to
logic 1, an all zero captured message in algorithm 1 and an all zero accepted message 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, an all zero captured message in algorithm 1 and an all zero accepted message 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.
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
191
PMC [ PMC-SIERRA, INC ]
