RELEASED
PM7380 FREEDM-32P672
DATA SHEET
PMC-1990262
ISSUE 5
FRAME ENGINE AND DATA LINK MANAGER 32P672
CONTENTS
1
2
3
4
5
6
7
8
9
FEATURES...............................................................................................1
APPLICATIONS........................................................................................4
REFERENCES .........................................................................................5
APPLICATION EXAMPLES......................................................................6
BLOCK DIAGRAM....................................................................................8
DESCRIPTION .........................................................................................9
PIN DIAGRAM........................................................................................12
PIN DESCRIPTION ................................................................................13
FUNCTIONAL DESCRIPTION ...............................................................38
9.1
HIGH SPEED MULTI-VENDOR INTEGRATION PROTOCOL
(H-MVIP)......................................................................................38
9.2
9.3
HIGH-LEVEL DATA LINK CONTROL (HDLC) PROTOCOL.........38
RECEIVE CHANNEL ASSIGNER................................................39
9.3.1
9.3.2
9.3.3
9.3.4
9.3.5
LINE INTERFACE TRANSLATOR (LIT) ........................41
LINE INTERFACE..........................................................42
PRIORITY ENCODER...................................................42
CHANNEL ASSIGNER ..................................................42
LOOPBACK CONTROLLER .........................................43
9.4
9.5
RECEIVE HDLC PROCESSOR / PARTIAL PACKET BUFFER...43
9.4.1
9.4.2
HDLC PROCESSOR.....................................................44
PARTIAL PACKET BUFFER PROCESSOR..................44
RECEIVE DMA CONTROLLER...................................................46
9.5.1 DATA STRUCTURES ....................................................46
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
ii
PMC [ PMC-SIERRA, INC ]
