PM5366-PI datasheet(110/267 Pages) PMC

110 / 267 page

PRELIMINARY

PM5366 TEMAP-84

DATASHEET

PMC-2010672

ISSUE 1

HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER

AND M13 MULTIPLEXER

PROPRIETARY AND CONFIDENTIAL

Expected PSL

Accepted PSL

PSLM State

001

000

Mismatch

001

Match

001

PDI Code

Match

001

XXX

≠ 000, 001, PDI Code

Match

PDI Code

000

Mismatch

PDI Code

001

Match

PDI Code

Match

PDI Code

XXX

≠ 000, 001, PDI Code

Mismatch

XXX

≠ 000, 001,

PDI Code

000

Mismatch

XXX

≠ 000, 001,

PDI Code

001

Match

XXX

≠ 000, 001,

PDI Code

XXX

Match

XXX

≠ 000, 001,

PDI Code

YYY

Mismatch

Each time an incoming PSL differs from the one in the previous multiframe, the

PSL unstable counter is incremented. Thus, a single bit error in the PSL in a

sequence of constant PSL values will cause the counter to increment twice, once

on the errored PSL and again on the first error-free PSL. The incoming PSL is

considered unstable when the counter reaches five. The counter is cleared

when the same PSL is received for five consecutive multiframes.

9.24 Receive Tributary Trace Buffer (RTTB)

When configured for SONET compatible operation, each one of three receive

tributary trace buffers (RTTB) processes the tributary trace message of all the

tributaries in an STS-1 stream. Each of the seven tributary groups (VT groups)

may be independently configured to accept any of the four tributary types (VT1.5,

VT2, VT3, and VT6). The RTTB extracts tributary trace message from each

tributary and stores it in one of a set of internal buffers. The RTTB may be

configured for SDH compatible operation. The incoming stream may carry an

AU3 of an STM1 stream or a TUG3 in an AU4 of an STM1 stream.

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