
IBM Dual Bridge and Memory Controller
dbamc01TOC.fm.01
July 13, 2000
Page i
Contents
1. General Information .....................................................................................................1
1.1 Features ............................................................................................................................................1
1.2 Description .......................................................................................................................................1
1.3 Ordering Information .......................................................................................................................2
1.4 Conventions and Notation ..............................................................................................................2
1.5 Pin Information .................................................................................................................................6
2. I/O Signals ..................................................................................................................15
2.1 Signal Descriptions ........................................................................................................................16
3. Registers .....................................................................................................................25
3.1 Standard PCI Configuration Space (x‘00’ to x‘68’) ......................................................................25
3.2 Specific PCI Host Bridges Space (BAR + x‘000F 6110’ to BAR +x‘000F 9810’) .......................25
3.3 System Space Address Map (x‘FF00 0000’ to x‘FFFF FFFF’) ....................................................25
3.4 Standard PCI Configuration Registers .........................................................................................27
3.4.1 Vendor ID (VID) ......................................................................................................................29
3.4.2 Device ID (DEVID) ..................................................................................................................30
3.4.3 PCI Command (CMND) ..........................................................................................................31
3.4.4 PCI Status (STAT) ..................................................................................................................33
3.4.5 Revision ID (RID) ....................................................................................................................35
3.4.6 Programming Interface (SPI) ..................................................................................................36
3.4.7 Sub-Class Code (SUBC) ........................................................................................................37
3.4.8 Base Class Code (CLASS) .....................................................................................................38
3.4.9 Cache Line Size (CSIZE) .......................................................................................................39
3.4.10 Latency Timer (LTIM) ...........................................................................................................40
3.4.11 Header Type (HDRT) ...........................................................................................................41
3.4.12 Built-in Self Test (BIST) ........................................................................................................42
3.4.13 System Base Address Register for PCI-64 (PSBAR) ...........................................................43
3.4.14 PCI-32 Base Address Register for PCI-64 (PPBAR) ............................................................44
3.4.15 Interrupt Line (INTLN) ...........................................................................................................45
3.4.16 Interrupt Pin (INTPIN) ...........................................................................................................46
3.4.17 Minimum Grant (MINGNT) ...................................................................................................47
3.4.18 Maximum Latency (MAXLT) .................................................................................................48
3.4.19 Bus Number (BUSNO) .........................................................................................................49
3.4.20 Subordinate Bus Number (SUBNO) .....................................................................................50
3.4.21 Disconnect Counter (DISCNT) .............................................................................................51
3.4.22 Retry Counter (RETRY) ........................................................................................................52
3.4.23 Deadlock Retry Counter (DLKRETRY) .................................................................................53
3.4.24 Semaphore (PSEM) .............................................................................................................54
3.4.25 Set Addressed Interrupt (IT_ADD_SET) ..............................................................................55
3.4.26 Reset PCI-64 Interrupt (INT_RESET) ..................................................................................56
3.5 Specific PCI Host Bridge Registers ..............................................................................................57
3.5.1 PCI Slave Error Address Register (PSEA) .............................................................................58
3.5.2 PCI Diagnostic Register (PCIDG) ...........................................................................................59
3.5.3 Interrupt Acknowledge Cycle (INTACK) .................................................................................60
3.5.4 PCI Base Address for I/O (PIBAR) .........................................................................................61
3.5.5 PCI Base Address for Memory (PMBAR) ...............................................................................62