PM8621-BI PMC-Sierra, Inc., PM8621-BI Datasheet - Page 15

• Manufacturer Part Number: PM8621-BI
• Description: Driver, NSE/SBS Narrowband Chipset Driver
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2021248, Issue 1
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Figure 1: NSE/SBS Switching Fabric - Centralized System Model ................................. 22
Figure 2: NSE/SBS Switching Fabric - Distributed System Model ................................. 23
Figure 3: Stage-3 Switch Fabric: 64 SBSLITEs, 6 NSE-20G, Bandwidth = 40
Figure 4: NSE/SBS Tributary Naming Convention for TeleCombus and SBI336
Figure 5: NSE/SBS Switching Fabric – Loopback State .................................................. 28
Figure 6: NSE/SBS Switching Fabric – Default vs. Custom LVDS Wiring..................... 30
Figure 7: 1+1 Port Protection Before and After a Switchover .......................................... 30
Figure 8: 1:N Port Protection (with N = 2) : Before and After a Switchover to
Figure 9: UPSR Protection - 2-fiber ................................................................................. 32
Figure 10: Stage-1 Narrowband Switch Fabric: 32 SBSLITEs, 1 NSE-20G for
Figure 11: Doubled SBS Fabric – 10Gbps Aggregate Bandwidth using NSE-20G ......... 34
Figure 12: Doubled SBS and NSE Fabric – 20Gbps Aggregate Bandwidth using
Figure 13: CAS Traffic Routing Across NSE/SBS Fabric................................................ 36
Figure 14: Driver External Interfaces – Typical Centralized Configuration..................... 38
Figure 15: Driver External Interfaces – Typical Distributed Configurations.................... 39
Figure 16: Driver External Interfaces – Typical Distributed Configurations
Figure 17: Driver Architecture – Internal Components .................................................... 42
Figure 18: Driver Software States..................................................................................... 48
Figure 19: Module Management Flow Diagram............................................................... 50
Figure 20: Chipset Device Management Flow Diagram................................................... 51
Figure 21: Example of overlapping groups....................................................................... 53
IST OF
Gbps.......................................................................................................................... 24
Bus ............................................................................................................................ 28
Protect Working A Ingress Port................................................................................. 31
Working Fabric and 1 for Protect Fabric .................................................................. 32
Two NSE-20G........................................................................................................... 35
(Standalone OPA) ..................................................................................................... 40
F
IGURES
Narrowband Chipset Driver User’s Manual
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