參數(shù)資料
型號(hào)： VT82C586B
廠商： Electronic Theatre Controls, Inc.
英文描述： PCI INTEGRATED PERIPHERAL CONTROLLER
中文描述： 整合的周邊控制器的PCI
文件頁(yè)數(shù)： 33/69頁(yè)
文件大小： 393K
代理商： VT82C586B
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VT82C586B
Revision 1.0
May 13, 1997
-
27-
Register Descriptions
PCI to ISA Bridge Registers (Function 0)
All registers are located in the function 0 PCI configuration
space of the VT82C586B. These registers are accessed
through PCI configuration mechanism #1 via I/O address
CF8/CFC.
PCI Configuration Space Header
Offset 1-0 - Vendor ID = 1106h ......................................... RO
Offset 3-2 - Device ID = 0586h .......................................... RO
Offset 5-4 - Command ....................................................... RW
15-4 Reserved
........................................ always reads 0
3
Special Cycle Enable
.....Normally RW, default = 1
2
Bus Master
........................................ always reads 1
1
Memory Space
.................. Normally RO, reads as 1
0
I/O Space
...................... Normally RO, reads as 1
If the test bit at offset 46 bit-4 is set, access to the above
indicated bits is reversed: bit-3 above becomes read only
(reading back 1) and bits 0-1 above become read / write (with
a default of 1).
Offset 7-6 - Status ........................................................... RWC
15
Detected Parity Error
....................write one to clear
14
Signalled System Error
...................... always reads 0
13
Signalled Master Abort
.................write one to clear
12
Received Target Abort
..................write one to clear
11
Signalled Target Abort
...................... always reads 0
10-9 DEVSEL# Timing
....................fixed at 01 (medium)
8
Data Parity Detected
.......................... always reads 0
7
Fast Back-to-Back
.............................. always reads 0
6-0
Reserved
........................................ always reads 0
Offset 8 - Revision ID = nn ................................................ RO
7-0
ID for VT82C586 = 0xh
ID for VT82C586A = 2xh
ID for VT82C586B = 3xh (3040 OEM Silicon)
ID for VT82C586B = 4xh (3041 Production Sil.)
Offset 9 - Program Interface = 00h .................................. RO
Offset A - Sub Class Code = 01h ....................................... RO
Offset B - Class Code = 06h ............................................... RO
Offset E - Header Type = 80h ........................................... RO
7-0
Header Type Code.........
80h (Multifunction Device)
Offset F - BIST = 00h ......................................................... RO
Offset 2F-2C - Subsystem ID ............................................. RO
ISA Bus Control
Offset 40 - ISA Bus Control ............................................. RW
7
ISA Command Delay
0
Normal...................................................default
1
Extra
6
Extended ISA Bus Ready
0
Disable...................................................default
1
Enable
5
ISA Slave Wait States
0
4 Wait States..........................................default
1
5 Wait States
4
Chipset I/O Wait States
0
2 Wait States..........................................default
1
4 Wait States
3
I/O Recovery Time
0
Disable...................................................default
1
Enable
2
Extend-ALE
0
Disable...................................................default
1
Enable
1
ROM Wait States
0
1 Wait State ...........................................default
1
0 Wait States
0
ROM Write
0
Disable...................................................default
1
Enable
Offset 41 - ISA Test Mode ............................................... RW
7
Bus Refresh Arbitration
(do not program) default=0
6
XRDY Test Mode
(do not program)...........default=0
5
Port 92 Fast Reset
0
Disable...................................................default
1
Enable
4
A20G Emulation
(do not program).............default=0
3
Double DMA Clock
0
Disable (DMA Clock = ISA Clock)...default
1
Enable (DMA Clock = ISA Clock)
2
SHOLD Lock During INTA
(do not program) def=0
1
Refresh Request Test Mode
(do not program).def=0
0
Refresh Test Mode ..................... (3041 silicon only)
0
Disable ISA Refresh..............................default
1
Enable ISA Refresh
Note: This bit should always be set to one in the
OEM 3040 silicon.
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