PM9312 Просмотр технического описания (PDF) - PMC-Sierra

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Компоненты Описание

производитель

PM9312

Enhanced TT1 Chip Set Enhanced TT1 Switch Fabric

PMC-Sierra 

Released

Data Sheet

PMC-2000164

ISSUE 3

PMC-Sierra, Inc. PM9311/2/3/5 ETT1™ CHIP SET

ENHANCED TT1™ SWITCH FABRIC

A.1 Frame Formats - Dataslice To and From Enhanced Port Processor. . . . . . . . 317

A.2 Frame Formats - Dataslice To and From Crossbar. . . . . . . . . . . . . . . . . . . . . . 318

A.3 Frame Formats - Enhanced Port Processor To and From Scheduler . . . . . . . 319

Appendix B Common Pinout Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 323

B.1 JTAG Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323

B.2 Reserved Manufacturing Test Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323

B.3 Power Supply Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324

B.4 Example Power Up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325

Appendix C Interfacing Details for ETT1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327

C.1 Compensating for Round Trip Delay Between Linecard and ETT1(LCS) . . . . 327

C.1.1 Preventing Underflow of the VOQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327

C.2 The 8b/10b Interface to the Dataslice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328

C.2.1 Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329

C.2.2 Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333

C.3 Managing Cell Rates (Setting the Idle Count Register) . . . . . . . . . . . . . . . . . . 335

C.4 Avoiding Delays Due to Idle Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

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