PM5366 datasheet(19/267 Pages) PMC

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PRELIMINARY

PM5366 TEMAP-84

DATASHEET

PMC-2010672

ISSUE 1

HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER

AND M13 MULTIPLEXER

PROPRIETARY AND CONFIDENTIAL

• Extracts up to 21 bit asynchronous mapped VT2 virtual tributaries from an STS-1

SPE into E1 streams via an optional elastic store.

• Extracts up to 21 bit asynchronous mapped TU-12 tributary units from an STM-

1/VC4 TUG3 or STM-1/VC3 into E1 or T1 streams via an optional elastic store.

• Demapper ignores all transport overhead bytes, path overhead bytes and stuff

(R) bits

• Performs majority vote C-bit decoding to detect stuff requests.

Each one of three SONET/SDH DS3 Mapper Sections:

• Maps a DS3 stream into an STS-1 SPE (AU3).

• Sets all fixed stuff (R) bits to zeros or ones per microprocessor control

• Extracts a DS3 stream from an STS-1 SPE (AU3).

• Demapper ignores all transport overhead bytes, path overhead bytes and stuff

(R) bits

• Performs majority vote C-bit decoding to detect stuff requests

• Complies with DS3 to STS-1 asynchronous mapping standards

Each one of three DS3 Receiver Sections:

• Frames to a DS3 signal with a maximum average reframe time of less than 1.5

ms (as required by TR-TSY-000009 Section 4.1.2 and TR-TSY-000191 Section

5.2).

• Decodes a B3ZS-encoded signal and indicates line code violations. The

definition of line code violation is software selectable.

• Provides indication of M-frame boundaries from which M-subframe boundaries

and overhead bit positions in the DS3 stream can be determined by external

processing.

• Detects the DS3 alarm indication signal (AIS) and idle signal. Detection

algorithms operate correctly in the presence of a 10-3 bit error rate.

• Detection times of 2.23 ms and 13.5 ms are supported. The fast detection time

meets the requirement of TR-TSY-000191 Section 5. The longer detection time

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