參數(shù)資料
型號: PLI9080
廠商: Electronic Theatre Controls, Inc.
英文描述: PCI I/O ACCELERATOR
中文描述: 的PCI I / O加速器
文件頁數(shù): 62/133頁
文件大小: 883K
代理商: PLI9080
SECTION 4
PCI 9080
REGISTERS
PLX Technology, Inc., 1997
Page 54
Version 0.93
4.3.12 (PCIBAR3; PCI:1Ch, LOC:1Ch) PCI Base Address Register for Memory Accesses to
Local Address Space 1
Table 4-22. (PCIBAR3; PCI:1Ch, LOC:1Ch) PCI Base Address Register for Memory Accesses to Local Address
Space 1
Field
Description
Read
Write
Value after
Reset
0
Memory Space Indicator. A value of 0 indicates the register maps into memory space.
A value of 1 indicates the register maps into I/O space.
(Specified in LAS1RR register.)
Yes
No
0
2:1
Location of register. Location values:
00—Locate anywhere in 32 bit memory address space
01—Locate below 1 MB memory address space
10—Locate anywhere in 64 bit memory address space
11—Reserved
(Specified in LAS1RR register.)
If I/O Space, bit 1 is always 0 and bit 2 is included in the base address.
Yes
Mem: No
I/O:
bit 1 no,
bit 2 yes
0
3
Prefetchable (If memory space). A value of 1 indicates there are no side effects on
reads. This bit reflects the value of bit 3 in the LAS1RR register and only provides
status to the system. This bit has no effect on the operation of the PCI 9080.
Prefetching features of this address space are controlled by the associated Bus
Region Descriptor Register.
(Specified in LAS1RR register.)
If I/O Space, bit 3 is included in the base address.
Yes
Mem: No
I/O: Yes
0
31:4
Memory Base Address. Memory base address for access to local address space 1.
Yes
Yes
0
Note: PCIBAR3 can be enabled or disabled by setting or clearing bit 0 in the LAS1BA register.
4.3.13 (PCIBAR4; PCI:20h, LOC:20h) PCI Base Address Register
Table 4-23. (PCIBAR4; PCI:20h, LOC:20h) PCI Base Address Register
Field
Description
Read
Write
Value after Reset
31:0
Reserved.
Yes
No
0
4.3.14 (PCIBAR5; PCI:24h, LOC:24h) PCI Base Address Register
Table 4-24. (PCIBAR5; PCI:24h, LOC:24h) PCI Base Address Register
Field
Description
Read
Write
Value after Reset
31:0
Reserved.
Yes
No
0
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