参数资料
型号: IBM21P100BGB
元件分类: 总线控制器
英文描述: PCI BUS CONTROLLER, PBGA304
封装: 31 X 31 MM, HEAT SINK, PLASTIC, BGA-304
文件页数: 70/140页
文件大小: 2032K
代理商: IBM21P100BGB
IBM21P100BGB
IBM 133 PCI-X Bridge R1.1
ppb11_pcix_regs.fm.03
July 9, 2001
Configuration Registers
Page 27 of 131
5. Configuration Registers
This section describes the standard and device-specific configuration registers contained within the bridge.
These registers provide various control and status reporting functions. Registers are accessible from the
primary interface using the Configuration Read and Configuration Write commands.
5.1 Configuration Space
The PCI/PCI-X Specifications define a separate address space called Configuration Space in which the
configuration registers are located. It is a contiguous block of 256 bytes, subdivided into two regions:
1. The first 64 bytes are the PCI Configuration Space Header region, which provides for identification, con-
figuration, and recovery capabilities.
2. The remaining 192 bytes are the PCI Device Dependent region, which provides for device-specific con-
figuration data.
In addition, there are two versions of the PCI Configuration Space:
1. The standard configuration is often referred to as a “Type x‘00’ PCI Configuration Space Header”
because the value x‘00’ is stored in the PCI Header Type register (at offset x‘0E’).
2. The PCI-to-PCI Bridge configuration is often referred to as a “Type x‘01’ PCI Configuration Space
Header” because the value x‘01’ is stored in the PCI Header Type register (at offset x‘0E’).
This chapter provides a specification for only the Type x‘01’ PCI Configuration Space Header.
The mandatory PCI Configuration Space registers perform these operations:
Detect PCI devices and their functions
Initialize PCI devices
Assign system resources to PCI devices
Support catastrophic error recovery
5.2 Type x‘01’ PCI Configuration Space Header
5.2.1 Description
The 64-byte PCI Configuration Space Header region has two subregions:
The first 16 bytes are the PCI Device Independent region with registers for:
- Vendor ID
-Device ID
-Command
- Status
相关PDF资料
PDF描述
IBM21P100BGC PCI BUS CONTROLLER, PBGA304
IBM25403GCX-3JC76C2 RISC PROCESSOR, PQFP16
IBM25405GP-3BA200C2 RISC PROCESSOR, PBGA456
IBM25EMPPC603EFG-100 32-BIT, 100 MHz, RISC PROCESSOR, PQFP240
IBM25EMPPC603EBG-100 32-BIT, 100 MHz, RISC PROCESSOR, CBGA255
相关代理商/技术参数
参数描述
IBM24L5086 制造商:AVED MEMORY PRODUCTS 功能描述: 制造商:AVED Memory Products 功能描述:
IBM25403GCX-3BC80C2 制造商:IBM 功能描述:RISC PROCESSOR, 160 Pin Plastic BGA
IBM25403GCX-3JC50C2 制造商:IBM 功能描述:403GCX-3JC50C2
IBM25403GCX-3JC66C2 制造商:IBM 功能描述:
IBM25403GCX3JC76C2 制造商:IBM 功能描述: