PXF4336V11 INFINEON [Infineon Technologies AG], PXF4336V11 Datasheet - Page 23
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PXF4336V11
Manufacturer Part Number
PXF4336V11
Description
ABM Premium ATM Buf fer Manager
Manufacturer
INFINEON [Infineon Technologies AG]
Datasheet
1.PXF4336V11.pdf
(425 pages)
- Current page: 23 of 425
- Download datasheet (6Mb)
1.1.1
• Per-VC queueing for up to 8192 connections per direction for optimal connection
• Optional queue sharing
• Guaranteed per-queue minimum buffer reservation
• Cell acceptance based on programmable threshold sets with hysteresis evaluation
• Threshold sets for individual queues, traffic classes, schedulers, and global buffer for
• Per VC Packet Discard, including Early Packet Discard (EPD) & Partial Packet
• Cell Loss Priority (CLP) aware selective discard thresholds
• EFCI and CI/NI support thresholds
• UTOPIA input port backpressure thresholds without head-of-line-blocking
• Per queue and scheduler block congestion indication/avoidance thresholds
1.1.2
• Multistage scheduling units with
• Additional common real-time bypass queue for each direction, for cascading multiple
• Selectable Peak Cell Rate (PCR) shaping for each queue with minimum 2.62 Kbps
• Selectable Variable Bit Rate (VBR.1.2.3) leaky bucket shaping for up to 2046 queues
• VC merge function for up to 128 merge groups (arbitrary queues per merge group) for
• Support for Dynamic Bandwidth Allocation with SB occupancy threshold monitoring
• SB scheduler overbooking possibility
1.1.3
• Two external SDRAM Interfaces for cell storage, one for upstream and one for
• One common cell pointer SSRAM Interface
• Multiport UTOPIA Level 2 Interface in up- and downstream direction conforming to the
Data Sheet
isolation
optimized buffer sharing
Discard (PPD) thresholds for Guaranteed Frame Rate (GFR) support
ABM-Ps
and maximum 343 Mbit/s at 52 MHz clock (65472 programmable rates)
Multi Protocol Label Switching (MPLS) applications
downstream direction (up to 256 K cell buffer per direction)
specifications of the ATM Forum [4]
– Work conservative Weighted Round Robin (WRR) scheduling stage for 128
– Each Scheduler Block comprising of
Scheduler Blocks
– a Weighted Fair Queueing (WFQ) scheduler with 16320 programmable weight
– a high priority Round Robin (RR) scheduler for real-time traffic
– a low priority RR scheduler for best effort traffic
factors for each queue, providing rate guarantees and fairness in bandwidth
allocation
Queueing Functions
Scheduling Functions
Interfaces
23
PXF 4336 V1.1
2001-12-17
Overview
ABM-P
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