PM5347 datasheet(97/302 Pages) PMC

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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

TRATE[1:0]

MODE

51.84 Mbit/s, STS-1

155.52 Mbit/s, STS-3c/STM-1

FIXPTR:

The FIXPTR bit disables transmit payload pointer adjustments. If the FIXPTR

bit is a logic one, the transmit payload pointer is set at 522. If FIXPTR is a

logic zero, the payload pointer is controlled by the contents of the TPOP

Pointer Control register.

SDH_J0/Z0

The SDH_J0/Z0 bit selects whether to insert SONET or SDH formatted

section overhead bytes into the transmit stream. When SDH_J0/Z0 is a logic

one, SDH format section overhead bytes are selected for insertion. For this

case, the J0 byte (in STS-1) or the J0/Z0 bytes (in STS-3c) in the transmitted

signal are forced to the value programmed in the S/UNI-PLUS Transmit J0/Z0

overhead bytes are selected for insertion. For this case, the J0/Z0 bytes of

the transmitted STS-N signal are numbered incrementally from 1 to N (i.e.,

the J0 byte will be set to 0x01, the first Z0 will be set to 0x02, the second Z0

will be set to 0x03, etc.).

Note, for both cases, the transmit section trace buffer enable bit, TSTBEN can

be used to overwrite the J0 byte of the transmitted STS-3c/1 (STM-1) signal.

TSTBEN

The TSTBEN bit controls whether the section trace message stored in the

SSTB block is inserted into the transmit stream (i.e. the J0 byte). When

TSTBEN is a logic one, the message stored in the SSTB is inserted into the

transmit stream. When TSTBEN is a logic zero, the section trace message is

supplied by the TSOP block or via the TTOH input.

TPTBEN

The TPTBEN bit controls whether the path trace message stored in the SPTB

block is inserted into the transmit stream (i.e. the J1 byte). When TPTBEN is

a logic one, the message stored in the SPTB is inserted into the transmit

stream. When TPTBEN is a logic zero, the path trace message is supplied by

the TPOP block or via the TPOH input.

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