PM7367 データシートの表示（PDF） - PMC-Sierra

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PM7367

FRAME ENGINE AND DATALINK MANAGER

PMC-Sierra 

DATA SHEET

PMC-1991499

ISSUE 2

PM7367 FREEDM-32P32

FRAME ENGINE AND DATA LINK MANAGER

CONTENTS

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

2 APPLICATIONS........................................................................................3

3 REFERENCES .........................................................................................4

4 BLOCK DIAGRAM....................................................................................5

5 DESCRIPTION .........................................................................................6

6 PIN DIAGRAM ..........................................................................................8

7 PIN DESCRIPTION ..................................................................................9

8 FUNCTIONAL DESCRIPTION ...............................................................30

8.1 HIGH-LEVEL DATA LINK CONTROL PROTOCOL......................30

8.2 RECEIVE CHANNEL ASSIGNER ................................................31

8.2.1 LINE INTERFACE..........................................................32

8.2.2 PRIORITY ENCODER ...................................................32

8.2.3 CHANNEL ASSIGNER ..................................................32

8.2.4 LOOPBACK CONTROLLER .........................................33

8.3 RECEIVE HDLC PROCESSOR / PARTIAL PACKET BUFFER...33

8.3.1 HDLC PROCESSOR .....................................................33

8.3.2 PARTIAL PACKET BUFFER PROCESSOR ..................34

8.4 RECEIVE DMA CONTROLLER ...................................................36

8.4.1 DATA STRUCTURES ....................................................36

8.4.2 DMA TRANSACTION CONTROLLER...........................46

8.4.3 WRITE DATA PIPELINE/MUX .......................................46

8.4.4 DESCRIPTOR INFORMATION CACHE ........................46

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

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