PM7384-BI Ver la hoja de datos (PDF) - PMC-Sierra

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PM7384-BI

FRAME ENGINE AND DATALINK MANAGER 84P672

PMC-Sierra 

DATA SHEET

PMC-1990445

ISSUE 5

PM7384 FREEDM-84P672

FRAME ENGINE AND DATA LINK MANAGER 84P672

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 ...............................................................33

9.1 SCALEABLE BANDWIDTH INTERCONNECT (SBI) INTERFACE

.....................................................................................................33

9.2 HIGH-LEVEL DATA LINK CONTROL (HDLC) PROTOCOL.........34

9.3 SBI EXTRACTER AND PISO.......................................................35

9.4 RECEIVE CHANNEL ASSIGNER ................................................35

9.4.1 LINE INTERFACE..........................................................37

9.4.2 PRIORITY ENCODER ...................................................38

9.4.3 CHANNEL ASSIGNER ..................................................38

9.4.4 LOOPBACK CONTROLLER .........................................38

9.5 RECEIVE HDLC PROCESSOR / PARTIAL PACKET BUFFER...38

9.5.1 HDLC PROCESSOR .....................................................39

9.5.2 PARTIAL PACKET BUFFER PROCESSOR ..................39

9.6 RECEIVE DMA CONTROLLER ...................................................41

9.6.1 DATA STRUCTURES ....................................................42

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

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