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)： 53/133頁
文件大小： 883K
代理商： PLI9080
SECTION 4
PCI 9080
REGISTERS
PLX Technology, Inc., 1997
Page 45
Version 0.93
4.2.3 Runtime Registers
Table 4-7. Runtime Registers
PCI
(Offset
from Base
Address)
Local
Access
(Offset
from Chip
Select
Address)
To ensure software compatibility with other versions of the
PCI 9080 family and to ensure compatibility with future enhancements,
write a zero to all unused bits.
31
0
PCI/Local
Writable
EEPROM
Writable
40h
C0h
Mailbox Register 0
1
Mailbox Register 1
1
Y
Y
44h
C4h
Y
Y
48h
C8h
Mailbox Register 2
Y
N
4Ch
CCh
Mailbox Register 3
Y
N
50h
D0h
Mailbox Register 4
Y
N
54h
D4h
Mailbox Register 5
Y
N
58h
D8h
Mailbox Register 6
Y
N
5Ch
DCh
Mailbox Register 7
Y
N
60h
E0h
PCI to Local Doorbell Register
Y
N
64h
E4h
Local to PCI Doorbell Register
Y
N
68h
E8h
Interrupt Control / Status
Y
N
6Ch
ECh
EEPROM Control, PCI Command Codes, User I/O Control, Init Control
Y
N
70h
F0h
Device ID
Vendor ID
N
N
74h
F4h
Unused
Revision ID
N
N
78h
C0h
Mailbox Register 0
1
Mailbox Register 1
1
Y
N
7Ch
C4h
Y
N
Note: Mailbox registers 0 and 1 are always accessible at addresses 78h/C0h and 7Ch/C4. When the I
2
O feature is
disabled (bit 0 of QSR register = 0), mailbox registers 0 and 1 are also accessible at PCI addresses 40h and 44h for PCI
9060 compatibility. When the I
2
O feature is enabled, the Inbound and Outbound Queue pointers are accessed at
addresses 40 and 44, replacing the mailbox registers in the PCI address space.
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