PM7382 Просмотр технического описания (PDF) - PMC-Sierra

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PM7382

FRAME ENGINE AND DATALINK MANAGER 32P256

PMC-Sierra 

RELEASED

DATA SHEET

PMC-2010333

ISSUE 3

PM7382 FREEDM-32P256

FRAME ENGINE AND DATA LINK MANAGER 32P256

CONTENTS

1 FEATURES...............................................................................................1

2 APPLICATIONS........................................................................................4

3 REFERENCES .........................................................................................5

4 BLOCK DIAGRAM....................................................................................6

5 DESCRIPTION .........................................................................................7

6 PIN DIAGRAM ........................................................................................10

7 PIN DESCRIPTION ................................................................................ 11

8 FUNCTIONAL DESCRIPTION ...............................................................36

8.1 HIGH SPEED MULTI-VENDOR INTEGRATION PROTOCOL

(H-MVIP) ......................................................................................36

8.2 HIGH-LEVEL DATA LINK CONTROL (HDLC) PROTOCOL.........36

8.3 RECEIVE CHANNEL ASSIGNER ................................................37

8.3.1 LINE INTERFACE TRANSLATOR (LIT) ........................39

8.3.2 LINE INTERFACE..........................................................39

8.3.3 PRIORITY ENCODER ...................................................40

8.3.4 CHANNEL ASSIGNER ..................................................40

8.3.5 LOOPBACK CONTROLLER .........................................41

8.4 RECEIVE HDLC PROCESSOR / PARTIAL PACKET BUFFER...41

8.4.1 HDLC PROCESSOR .....................................................42

8.4.2 PARTIAL PACKET BUFFER PROCESSOR ..................42

8.5 RECEIVE DMA CONTROLLER ...................................................44

8.5.1 DATA STRUCTURES ....................................................44

8.5.2 DMA TRANSACTION CONTROLLER...........................54

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

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