RELEASED

PM7364 FREEDM-32

DATA SHEET

PMC-1960758

ISSUE 6

FRAME ENGINE AND DATA LINK MANAGER

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

ii

CONTENTS

1

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

2

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

3

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

4

APPLICATION EXAMPLES ......................................................................5

5

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

6

DESCRIPTION .........................................................................................7

7

PIN DIAGRAM ..........................................................................................9

8

PIN DESCRIPTION ................................................................................10

9

FUNCTIONAL DESCRIPTION ...............................................................31

9.1

HIGH-LEVEL DATA LINK CONTROL PROTOCOL......................31

9.2

RECEIVE CHANNEL ASSIGNER ................................................32

9.2.1

LINE INTERFACE..........................................................33

9.2.2

PRIORITY ENCODER ...................................................33

9.2.3

CHANNEL ASSIGNER ..................................................33

9.2.4

LOOPBACK CONTROLLER .........................................34

9.3

RECEIVE HDLC PROCESSOR / PARTIAL PACKET BUFFER...34

9.3.1

HDLC PROCESSOR .....................................................34

9.3.2

PARTIAL PACKET BUFFER PROCESSOR ..................35

9.4

RECEIVE DMA CONTROLLER ...................................................37

9.4.1

DATA STRUCTURES ....................................................37

9.4.2

DMA TRANSACTION CONTROLLER...........................47

9.4.3

WRITE DATA PIPELINE/MUX .......................................47