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6 21555 Non-Transparent PCI-to-PCI Bridge User Manual
Contents
16.7 Interrupt Registers ............................................................................................................170
16.8 Scratchpad Registers .......................................................................................................174
16.9 PROM Registers...............................................................................................................175
16.10 SROM Registers...............................................................................................................179
16.11 Arbiter Control...................................................................................................................183
16.12 Error Registers..................................................................................................................183
16.13 Init Registers.....................................................................................................................185
16.14 JTAG Registers ................................................................................................................190
16.15 VPD Registers ..................................................................................................................192
Index .....................................................................................................................................................197
Figures
1 21555 Intelligent Controller Application ......................................................................................16
2 21555 Microarchitecture .............................................................................................................19
3 BAR Setup Register Example ....................................................................................................35
4 Address Format ..........................................................................................................................36
5 Direct Offset Address Translation...............................................................................................37
6 Downstream Address Translation Example ...............................................................................37
7 Address Translation Using A Lookup Table ...............................................................................39
8 Upstream Lookup Table Address Translation ............................................................................40
9 Lookup Table Entry Format ........................................................................................................ 41
10 Dual-Address Transaction Forwarding .......................................................................................42
11 CompactPCI Hot-Swap Connections .........................................................................................73
12 21555 Hot-Swap Insertion and Removal....................................................................................75
13 Synchronous Secondary Clock Generation................................................................................78
14 Parallel and Serial ROM Connections ........................................................................................ 84
15 PROM Read Timing ...................................................................................................................85
16 PROM Write Timing.................................................................................................................... 87
17 Read and Write Strobe Timing ...................................................................................................88
18 Attaching Multiple Devices on the ROM Interface ......................................................................90
19 SROM Write All Timing Diagram ................................................................................................94
20 SROM Write Enable Timing Diagram.........................................................................................94
21 SROM Write Disable Timing Diagram ........................................................................................94
24 SROM Check Status Timing Diagram ........................................................................................95
22 SROM Erase Timing Diagram ....................................................................................................95
23 SROM Erase All Operation.........................................................................................................95
25 Secondary Arbiter Example........................................................................................................99
26 Signal trst_l States....................................................................................................................112
Tables
1 Signal Type Abbreviations..........................................................................................................13
2 Register Abbreviations ...............................................................................................................14
3 21555 and PPB Feature Comparison......................................................................................... 17
4 Decoded and Not Decoded Addresses ......................................................................................20
5 Signal Pin Functional Groups..................................................................................................... 23
6 Primary PCI Bus Interface Signals .............................................................................................24