参数资料
型号: S5933QE
厂商: APPLIEDMICRO INC
元件分类: 总线控制器
英文描述: PCI BUS CONTROLLER, PQFP160
封装: PLASTIC, QFP-160
文件页数: 88/176页
文件大小: 823K
代理商: S5933QE
3-27
PCI CONFIGURATION REGISTERS
S5933
PCI CONTROLLER
PCI COMMAND REGISTER (PCICMD)
Register Name:
PCI Command
Address Offset:
04h-05h
Power-up value:
0000h
Boot-load:
not used
Attribute:
Read/Write (R/W on 6 bits, Read
Only for all others)
Size:
16 bits
Figure 3. PCI Command Register
This 16-bit register contains the PCI Command. The
function of this register is defined by the PCI specifi-
cation and its implementation is required of all PCI
devices. Only six of the ten fields are used by this
device; those which are not used are hardwired to 0.
The definitions for all fields are provided here for
completeness.
15
0
Reserved = 00's
Fast Back-to-Back
SERRE
Wait Cycle Enable
Parity Error Enable
Palette Snoop Enable
Memory Write and Invalidate Enable
Special Cycle Enable
Bus Master Enable
Memory Access Enable
I/O Access Enable
X0
0X
0
X
1
2
3
4
5
6
7
8
9
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