
IBM32NPCXX1EPABBE66
Preliminary
IBM Processor for Network Resources
pnr261TOC.fm.06
August 14, 2000
Page iii
3.3.16 INTST General Purpose Timer Status ..................................................................................98
3.3.17 INTST General Purpose Timer Mode Control ......................................................................99
3.3.18 INTST Enable for PCORE Normal Interrupt .......................................................................100
3.3.19 INTST Enable for PCORE Critical Interrupt ........................................................................100
3.3.20 INTST Debug States Control ..............................................................................................101
3.3.21 INTST Delayed Interrupts DMA System Address 1 ............................................................103
3.3.22 INTST Delayed Interrupts DMA System Address 2 ............................................................103
3.3.23 Current PCI Master Address Counter for Debug ................................................................103
3.3.24 External Entity States Read ................................................................................................104
3.4 Reset and Power-on Logic (CRSET/CBIST) ...............................................................................105
3.4.1 Reset Status Register ...........................................................................................................105
3.4.2 Software Reset Enable Register ..........................................................................................106
3.4.3 Software Reset Register .......................................................................................................107
3.4.4 Memory Type Register .........................................................................................................108
3.4.5 CRSET PLL Range Debug ...................................................................................................109
3.4.6 CRSET Control Register ......................................................................................................109
3.4.7 Clock Control Register ..........................................................................................................111
3.4.8 CBIST PRPG Results ...........................................................................................................113
3.4.9 CBIST MISR Results ............................................................................................................113
3.4.10 CBIST BIST Rate ...............................................................................................................113
3.4.11 CBIST PRPG Expected Signature .....................................................................................114
3.4.12 CBIST MISR Expected Signature .......................................................................................114
3.4.13 CBIST CYCT Load Value ...................................................................................................114
3.5 DMA Queues (DMAQS) ................................................................................................................115
3.5.1 DMA Descriptors ..................................................................................................................115
3.5.2 DMA Types and Options ......................................................................................................115
3.5.3 Descriptor Based DMAs .......................................................................................................116
3.5.4 Register Based DMAs ..........................................................................................................117
3.5.5 Polling, Interrupts, or Events ................................................................................................117
3.5.6 Error Detection and Recovery ..............................................................................................117
3.5.7 DMA/Queue Scheduling Options ..........................................................................................117
3.5.8 Address Size ........................................................................................................................117
3.5.9 Data Width ............................................................................................................................118
3.5.10 Initialization of DMAQS .......................................................................................................118
3.5.11 DMAQS Lower Bound Registers ........................................................................................119
3.5.12 DMAQS Upper Bound Registers ........................................................................................120
3.5.13 DMAQS Head Pointer Registers ........................................................................................121
3.5.14 DMAQS Tail Pointer Registers ...........................................................................................121
3.5.15 DMAQS Length Registers ..................................................................................................122
3.5.16 DMAQS Threshold Registers .............................................................................................122
3.5.17 DMAQS Status Register .....................................................................................................123
3.5.18 DMAQS Interrupt Enable Register .....................................................................................125
3.5.19 DMAQS Control Register ...................................................................................................126
3.5.20 DMAQS Enqueue DMA Descriptor Primitive Register .......................................................128
3.5.21 DMAQS Source Address Register .....................................................................................128
3.5.22 DMAQS Destination Address Register ...............................................................................129
3.5.23 DMAQS Buffer Address Register .......................................................................................129
3.5.24 DMAQS Transfer Count and Flag Register ........................................................................130
3.5.25 DMAQS System Descriptor Address Register ...................................................................132
3.5.26 DMAQS Checksum Register ..............................................................................................133
3.5.27 DMAQS Local Descriptor Range Registers ........................................................................134