STANDARD PRODUCT
PM5365 TEMAP
DATASHEET
PMC-1991148
ISSUE 3
HIGH DENSITY VT/TU MAPPER
AND M13 MULTIPLEXER
Sꢀ 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.
Sꢀ Demapper ignores all transport overhead bytes, path overhead bytes and
stuff (R) bits
Sꢀ Performs majority vote C-bit decoding to detect stuff requests.
SONET/SDH DS3 Mapper Section:
Sꢀ Maps a DS3 stream into an STS-1 SPE (AU3).
Sꢀ Sets all fixed stuff (R) bits to zeros or ones per microprocessor control
Sꢀ Extracts a DS3 stream from an STS-1 SPE (AU3).
Sꢀ Demapper ignores all transport overhead bytes, path overhead bytes and
stuff (R) bits
Sꢀ Performs majority vote C-bit decoding to detect stuff requests
Sꢀ Complies with DS3 to STS-1 asynchronous mapping standards
DS3 Receiver Section:
Sꢀ 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).
Sꢀ Decodes a B3ZS-encoded signal and indicates line code violations. The
definition of line code violation is software selectable.
Sꢀ 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.
Sꢀ Detects the DS3 alarm indication signal (AIS) and idle signal. Detection
-3
algorithms operate correctly in the presence of a 10 bit error rate.
Sꢀ Accumulates up to 65,535 line code violation (LCV) events per second,
65,535 P-bit parity error events per second, 1023 F-bit or M-bit (framing bit)
events per second, 65,535 excessive zero (EXZ) events per second, and
when enabled for C-bit parity mode operation, up to 16,383 C-bit parity error
Proprietary and Confidential to PMC-Sierra, Inc. and for its Customers’ Internal Use
6
PMC [ PMC-SIERRA, INC ]
