PM7312 pmc-sierra, PM7312 Datasheet - Page 11

• Manufacturer Part Number: PM7312
• Description: Freedm 32a1024l Assp Telecom Standard Datasheet
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021833, Issue 2
List of Figures
Figure 1 32xT1/E1 Access Card for a Router ............................................................................ 25
Figure 2 Block Diagram of FREEDM 32A1024L ........................................................................ 26
Figure 3 Pin Diagram ................................................................................................................. 28
Figure 4 Any-PHY Level 2 Mode Header Segment Transfer – Non Sequenced
Figure 5 Any-PHY Level 2 Mode Segment Transfer – PPP/FR Non-Header
Figure 6 Any-PHY Level 2 Mode Header Segment – PPP (Ingress and Egress) ..................... 55
Figure 7 Any-PHY Level 2 Mode Header Segment – FR (Ingress and Egress)........................ 55
Figure 8 Any-PHY Level 2 Mode Header Segment – ML-PPP Fragment Out Mode
Figure 9 Any-PHY Level 2 Mode Header Segment – PPP With Address and
Figure 10 Any-PHY Level 2 Mode Header Segment – PPP With PID Header
Figure 11 Any-PHY Level 2 Mode Header Segment – PPP With Address/Control
Figure 12 Any-PHY Level 3 Mode Segment Transfer – PPP/FR Non-Header
Figure 13 Any-PHY Level 3 Mode Header Segment – FR (Ingress and Egress)...................... 58
Figure 14 Ingress Data Flow ...................................................................................................... 60
Figure 15 Egress Data Flow....................................................................................................... 61
Figure 16 HDLC Frame .............................................................................................................. 66
Figure 17 CRC Generator .......................................................................................................... 67
Figure 18 Partial Packet Buffer Structure................................................................................... 68
Figure 19 Encapsulated Chunk Structures (Full = True)............................................................ 70
Figure 20 Encapsulated Chunk Structure (Full = False) ............................................................ 70
Figure 21 Linked List Data Structure of a Datagram.................................................................. 71
Figure 22 Elements in the Re-sequencing Block ....................................................................... 72
Figure 23 14-bit Sliding Window Used for Re-sequencing ........................................................ 73
Figure 24 Elements in the Re-sequencing Block ....................................................................... 74
Figure 25 - Ingress Queue Manager ........................................................................................... 76
Figure 26 Encapsulated Chunk Structure (Full = True) ............................................................. 79
Figure 27 Encapsulated Chunk Structure (Full = False) ............................................................ 79
Figure 28 Linked List Data Structure of a Datagram.................................................................. 80
Figure 29 DRAM Configuration for the Chunk Buffer Interface.................................................. 81
Figure 30 DRAM Configuration for the Re-Sequencing Memory Interface................................ 82
PPP or FR Datagrams (i.e. Control, LCP, NCP Packets) (Ingress and Egress) .................. 54
Segment (i.e. Not First Segment of a Datagram) or Transparent Mode (Ingress
and Egress)........................................................................................................................... 54
(Ingress Only) ....................................................................................................................... 55
Control Field Header Compression (Ingress and Egress).................................................... 56
Compression (Ingress and Egress) ...................................................................................... 56
Field and PID Header Compression (Ingress and Egress) .................................................. 57
Segment or Transparent Mode (Ingress and Egress) .......................................................... 58
FREEDM 32A1024L ASSP Telecom Standard Product Data Sheet
Released
11