Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 36

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Number
39.4 Port-to-Port (PTP) Switching....................................................................................... 39-15
39.4.1 PTP Switching Mechanism...................................................................................... 39-15
39.4.2 PTP Switching and PM ............................................................................................ 39-17
39.4.3 PTP Buffers.............................................................................................................. 39-17
39.4.4 PTP Buffer Descriptors ............................................................................................ 39-17
39.4.5 APC PTP Queues ..................................................................................................... 39-18
39.5 Statistical Counters ...................................................................................................... 39-18
39.6 Multi-PHY (MPHY) Configuration............................................................................. 39-19
39.6.1 Programming Multi-PHY Mode (Master Only) ...................................................... 39-20
39.6.1.1 Internal Look-up Table MPHY Support .............................................................. 39-20
39.6.1.2 Address Compression Multi-PHY Support ......................................................... 39-21
39.6.1.3 CAM Multi-PHY Support ................................................................................... 39-21
39.6.2 Programming Slave Operation in a Multi-PHY System.......................................... 39-21
39.7 ATM Commands.......................................................................................................... 39-21
40.1 APC Algorithm .............................................................................................................. 40-1
40.1.1 APC Implementation ................................................................................................. 40-3
40.1.2 APC Parameters......................................................................................................... 40-4
40.1.3 Programming APC Scheduling Table Size and NCITS............................................. 40-5
40.1.4 Defining APC Slot Time............................................................................................ 40-6
40.1.5 Programming Rates for CBR Channels ..................................................................... 40-6
40.1.6 Programming Rates for VBR Channels..................................................................... 40-7
40.1.7 Programming Rates for UBR Channels..................................................................... 40-8
40.1.8 APC Initialization and Operating Considerations ..................................................... 40-9
40.1.9 Modifying Channel Transmit Pace ............................................................................ 40-9
40.1.10 Minimizing Cell Delay Variation............................................................................... 40-9
40.2 Direct Scheduling of Cells ........................................................................................... 40-10
40.3 Using the APC with Multiple ATM Ports.................................................................... 40-10
40.4 Using the APC Without Using SCC4 or UTOPIA ...................................................... 40-11
40.5 APC Flux Compensation ............................................................................................. 40-12
40.5.1 Enabling APC Flux Compensation.......................................................................... 40-12
40.5.2 Debugging Overload Conditions ............................................................................. 40-13
40.6 APC Scheduling Tables ............................................................................................... 40-13
40.7 PHY Transmit Queues ................................................................................................. 40-14
40.8 MPHY Pointing Table (Master Only).......................................................................... 40-14
40.9 APC Priority Levels..................................................................................................... 40-15
40.10 Combined APC and PTP Programming Example ....................................................... 40-20
40.11 APC Scheduling Flow ................................................................................................. 40-21
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Contents
Title
Chapter 40
ATM Pace Control
MPC885 PowerQUICC Family Reference Manual, Rev. 2
Page
Number
Freescale Semiconductor