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S/UNI-QUAD
PMC-Sierra, Inc.
PM5349 S/UNI-QUAD
DATASHEET
PMC-971239 ISSUE 6 SATURN USER NETWORK INTERFACE (155-QUAD)
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
81
enabled to use the first of the framing algorithms where all the A1 framing
bytes and all the A2 framing bytes are examined. This algorithm examines all
48 bits of the STS-3c (STM-1/AU3/AU4) framing pattern.
FOOF:
The FOOF bit controls the framing of the RSOP. When a logic one is written
to FOOF, the RSOP is forced out of frame at the next frame boundary. The
FOOF bit is a write only bit, register reads may yield a logic one or a logic
zero.
DDS:
The DDS bit is set to logic one to disable the de-scrambling of the STS-3c
(STM-1) stream. When DDS is a logic zero, de-scrambling is enabled.
BIPWORD:
The BIPWORD bit position enables the accumulating of section block BIP
errors. When a logic one is written to the BIPWORD bit position, one or more
errors in the BIP-8 byte result in a single error accumulated in the B1 error
counter. When a logic zero is written to the BIPWORD bit position, all errors
in the B1 byte are accumulated in the B1 error counter.
Reserved:
The reserved bits must be programmed to logic zero for proper operation.