PM7385 Datasheet, PDF (3/244 Pages) PMC-Sierra, Inc – Frame Engine and Data Link Manager

DATA SHEET
PMC-1990114
ISSUE 6
PM7385 FREEDM-84A672
84 LINK, 672 CHANNEL FRAME ENGINE AND DATA LINK MANAGER
WITH ANY-PHY PACKET INTERFACE
CONTENTS
1 FEATURES...............................................................................................1
2 APPLICATIONS ........................................................................................3
3 REFERENCES .........................................................................................4
4 BLOCK DIAGRAM....................................................................................5
5 DESCRIPTION .........................................................................................6
6 PIN DIAGRAM ..........................................................................................9
7 PIN DESCRIPTION ................................................................................10
8 FUNCTIONAL DESCRIPTION................................................................39
8.1 SCALEABLE BANDWIDTH INTERCONNECT (SBI) INTERFACE39
8.2 HIGH-LEVEL DATA LINK CONTROL (HDLC) PROTOCOL.........40
8.3 SBI EXTRACTER AND PISO.......................................................41
8.4 RECEIVE CHANNEL ASSIGNER ................................................41
8.4.1 Line Interface .................................................................43
8.4.2 Priority Encoder .............................................................44
8.4.3 Channel Assigner ..........................................................44
8.4.4 Loopback Controller.......................................................44
8.5 RECEIVE HDLC PROCESSOR / PARTIAL PACKET BUFFER ...44
8.5.1 HDLC Processor............................................................45
8.5.2 Partial Packet Buffer Processor .....................................45
8.6 RECEIVE ANY-PHY INTERFACE ................................................47
8.6.1 FIFO Storage and Control..............................................48
8.6.2 Polling Control and Management...................................49
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE ii