PM7367 datasheet(3/323 Pages) PMC

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PM7367 FREEDM-32P32

DATA SHEET

PMC-1991499

ISSUE 2

FRAME ENGINE AND DATA LINK MANAGER

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

CONTENTS

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

APPLICATIONS........................................................................................3

REFERENCES .........................................................................................4

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

DESCRIPTION .........................................................................................6

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

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

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

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