PXB4330 Datasheet, PDF (17/201 Pages) Infineon Technologies AG – ICs for Communications

ATM Buffer Manager
ABM
PXB 4330
Version 1.1
1.1
Features
CMOS
Performance
• ATM layer processing up to STM-4/OC-12
equivalent
• Throughput up to 687 Mbit/s, bi-directional
• Uni-directional mode with resources of both
directions usable (optional)
P-BGA-352-1
• Up to 8192 connections, individually assignable to queues
• Up to 1024 queues per direction, individually assignable to schedulers and to service
classes
• FIFO queuing within each queue
• Up to 48 schedulers per direction with programmable service rates, individually
assignable to PHYs (up to 96 schedulers per direction by cascading two ABM chips,
see Application Note [7])
• Up to 16 traffic classes with individually selectable thresholds for service classes
• Up to 24 PHYs
Queuing Functions
• Common high-priority real-time bypass for both directions
• High-priority real-time bypass for each scheduler
• Queueing per-VC for up to 1024 connections per direction
• Weighted fair queuing with 15,360 weight factors programmable for each queue
• Optional shaping selectable for each queue (peak rate limiting) with minimum rate
100 cells/s (63,488 programmable rates)
Traffic Class Support
• Common and per scheduler high-priority real-time bypass for CBR and VBR-rt
• Guaranteed buffer space for CBR and VBR-rt
• Optional cell spacing for CBR (using per-VC queuing)
Type
PXB 4330
Data Sheet
Package
P-BGA-352-1
1-17
09.99