PM5347 datasheet(119/302 Pages) PMC

119 / 302 page

PM5347 S/UNI-PLUS

DATA SHEET

PMC-941033

ISSUE 6

SATURN USER NETWORK INTERFACE PLUS

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

103

consists of the first A1 byte, and the first four bits of the first A2 byte (12 bits

total). In the presence of a 10-3 bit error rate, the mean time between OOF

declarations is 103 minutes for both STS-1 and STS-3c/STM-1 rates.

When FPSEL is a logic zero, the framing pattern consists of all the A1 bytes

and all the A2 bytes (48 bits for STS-3c/STM-1 and 16 bits for STS-1). In the

presence of a 10-3 bit error rate, the mean time between OOF declarations is

26 seconds for STS-3c/STM-1, and 33 minutes for STS-1.

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 enables the frame synchronous descrambling of the receive

stream. When DDS is a logic one, descrambling is disabled. When DDS is a

logic zero, descrambling is enabled.

BIPWORD:

The BIPWORD bit controls the accumulation of B1 block errors. When

BIPWORD is a logic one, one or more B1 errors per frame result in a single

error accumulated in the B1 error counter. When BIPWORD is a logic zero,

each B1 error is accumulated in the B1 error counter.

PM5347 Datasheet(PDF) 119 Page - PMC-Sierra, Inc