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PM5366-PI Datasheet(PDF) 186 Page - PMC-Sierra, Inc

Part # PM5366-PI
Description  HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER AND M13 MULTIPLEXER
PDF  267 Pages
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Manufacturer  PMC [PMC-Sierra, Inc]
Direct Link  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM5366-PI Datasheet(HTML) 186 Page - PMC-Sierra, Inc

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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
174
STM-1/VC4 TUG3 or STM-1/VC3 otherwise no loopback data will get through.
The ingress data path is not affected by the telecom line loopback. This loopback
is only available for VT1.5/VT2/TU11/TU12 mapped tributaries. DS3 mapped
tributaries must use the DS3 line loopback. The Telecom bus line loopback mode
is shown diagrammatically in Figure 26.
Figure 26
- Telecom Line Loopback Diagram
VTPP
VT/TU
Payload
Processor
VTPP
VT/TU
Payload
Processor
LDDATA[7:0]
LDDP
LDPL
LDC1J1
LADATA[7:0]
LADP
LAPL
LAC1J1V1
LAC1
RTOP
Receive
Tributary
Path O/H
TTOP
Transmit
Tributary
Path O/H
12.11 SBI Bus Data Formats
The TEMAP-84 uses the Scaleable Bandwidth Interconnect (SBI) bus as a high
density link interconnect with devices processing T1s, E1s, DS3s, E3s,
transparent virtual tributaries and arbitary bandwidth payloads. The SBI bus is a
multi-point to multi-point bus capable of interconnecting up to four TEMAP-84
devices in parallel (if connected to a 77.76 MHz bus) with other link layer or
tributary processing devices.
Multiplexing Structure
The SBI structure uses a locked SONET/SDH structure fixing the position of the
TU-3 relative to the STS-3/STM-1. The SBI is also of fixed frequency and
alignment as determined by the reference clock (SREFCLK) and frame indicator
signals (SAC1FP and SDC1FP). Frequency deviations are compensated by
adjusting the location of the T1/E1/DS3/TVT1.5/TVT2 channels using floating
tributaries as determined by the V5 indicator and payload signals (SDV5, SAV5,
SDPL and SAPL). TVTs also allow for synchronous operation where



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