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PXF4336V11 Datasheet(PDF) 7 Page - Infineon Technologies AG |
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PXF4336V11 Datasheet(HTML) 7 Page - Infineon Technologies AG |
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7 / 425 page  ABM-P PXF 4336 V1.1 Table of Contents Page Data Sheet 7 2001-12-17 3.5.2.4 AVT (Context RAM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 3.5.2.5 Scan Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 3.6 Internal Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 3.6.1 Table Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 3.6.2 LCI: Local Connection Identifier Table . . . . . . . . . . . . . . . . . . . . . . . . . 117 3.6.3 QCT: Queue Configuration Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 3.6.4 QPT: Queue Parameter Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 3.6.5 TCT: Traffic Class Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 3.6.6 SBOC: Scheduler Block Occupancy Table . . . . . . . . . . . . . . . . . . . . . 117 3.6.7 SCT: Scheduler Configuration Table . . . . . . . . . . . . . . . . . . . . . . . . . . 118 3.6.8 MGT: Merge Group Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 3.6.9 AVT: ABR/VBR Configuration Table . . . . . . . . . . . . . . . . . . . . . . . . . . 118 3.6.9.1 AVT Context RAM Organization and Addressing . . . . . . . . . . . . . . 118 3.6.9.2 AVT Context RAM Section for ABR-VS/VD Support . . . . . . . . . . . . 120 3.6.9.3 AVT Context RAM Section for ABR-ER Support . . . . . . . . . . . . . . . 124 3.6.9.4 AVT Context RAM Section for VBR Shaping Support . . . . . . . . . . . 126 3.6.9.5 Common AVT CONFIG Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 3.6.10 ERC Message Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 3.6.10.1 RM_Cell FIFO Organization (IOP/FW View) . . . . . . . . . . . . . . . . . . 129 3.6.10.2 Emit FIFO Organization (IOP/FW View) . . . . . . . . . . . . . . . . . . . . . 130 3.6.11 QCIT: Congestion Indication Table . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 4 Operational Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 4.1 Basic Device Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 4.2 Basic Traffic Management Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . 132 4.2.1 Setup of Queues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 4.2.2 Programming Queue Scheduler Rates and Granularities . . . . . . . . . . 138 4.2.2.1 Scheduler Block Scheduler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 4.2.2.2 Programming the Scheduler Block Rates . . . . . . . . . . . . . . . . . . . . 138 4.2.2.3 Programming the Common Real-Time Bypass . . . . . . . . . . . . . . . . 141 4.2.2.4 Programming the SDRAM Refresh Empty Cell Cycles . . . . . . . . . . 141 4.2.2.5 Programming the PCR Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 4.2.2.6 Programming the Leaky Bucket Shaper . . . . . . . . . . . . . . . . . . . . . 144 4.2.2.7 Guaranteed Cell Rates and WFQ Weight Factors . . . . . . . . . . . . . . 146 4.2.3 ABM-P Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 4.2.4 Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 4.2.5 Bandwidth Reservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 4.2.5.1 Bandwidth Reservation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 4.2.6 Buffer Reservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 4.2.7 Support of Standard ATM Service Categories . . . . . . . . . . . . . . . . . . . 151 4.2.7.1 CBR Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 4.2.7.2 rt-VBR Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 4.2.7.3 nrt-VBR Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 |
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