PM8315-PI View Datasheet(PDF) - PMC-Sierra
Part Name
Description
Manufacturer
PM8315-PI Datasheet PDF : 330 Pages
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STANDARD PRODUCT
DATASHEET
PMC-1981125
ISSUE 7
PM8315 TEMUX
HIGH DENSITY T1/E1 FRAMER WITH
INTEGRATED VT/TU MAPPER AND M13 MUX
• Calculates and compares the tributary path BIP-2 error detection code for
each tributary and configurable to accumulate the BIP-2 errors on block or bit
basis in internal registers.
• Allows insertion of all-zeros or all-ones tributary idle code with unequipped
indication and valid pointer into any tributary under SW control.
• Allows SW to force the AIS insertion on a per tributary basis.
• Inserts valid H4 byte and all-zeros fixed stuff bytes. Remaining path overhead
bytes (J1, B3, C2,G1, F2, Z3, Z4, Z5) are set to all-zeros.
• Inserts valid pointers and all-zeros transport overhead bytes on the outgoing
telecom Add bus, with valid control signals.
• Support in-band error reporting by updating the FEBE, RDI and auxiliary RDI
bits in the V5 byte with the status of the incoming stream and remote alarm
pins.
• Calculates and inserts the tributary path BIP-2 error detection code for each
tributary.
SONET/SDH VT/TU Mapper Section:
• Inserts up to 28 bit asynchronous mapped VT1.5 virtual tributaries into an
STS-1 SPE from T1 streams.
• Inserts up to 28 bit asynchronous mapped TU-11 tributary units into a STM-
1/VC4 TUG3 or STM-1/VC3 from T1 streams.
• Inserts up to 21 bit asynchronous mapped VT2 virtual tributaries into an STS-
1 SPE from E1 streams.
• Inserts up to 21 bit asynchronous mapped TU-12 tributary units into an STM-
1/VC4 TUG3 or STM-1/VC3 from E1 or T1 streams.
• Bit asynchronous mapping assigns stuff control bits for all streams
independently using an all digital control loop. Stuff control bits are dithered to
produce fractional mapping jitter at the receiving desynchronizer.
• Sets all fixed stuff bits for asynchronous mappings to zeros or ones per
microprocessor control
PROPRIETARY AND CONFIDENTIAL
8
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