Motorola MVME2300 Series 用户手册
2-56
Computer Group Literature Center Web Site
Raven PCI Bridge ASIC
2
CONFIG_ADDRESS Register
The description of the CONFIG_ADDRESS register is presented in three
perspectives: from the PCI bus, from the MPC bus in big-endian mode, and
from the MPC bus in little-endian mode. Note that the view from the PCI
bus is purely conceptual, since there is no way to access the
CONFIG_ADDRESS register from the PCI bus.
perspectives: from the PCI bus, from the MPC bus in big-endian mode, and
from the MPC bus in little-endian mode. Note that the view from the PCI
bus is purely conceptual, since there is no way to access the
CONFIG_ADDRESS register from the PCI bus.
Conceptual perspective from the PCI bus
Perspective from the MPC bus in Big-Endian mode
Offset
$CFB
$CFA
$CF9
$CF8
Bit
3
1
1
3
0
0
2
9
9
2
8
8
2
7
7
2
6
6
2
5
5
2
4
4
2
3
3
2
2
2
2
1
1
2
0
0
1
9
9
1
8
8
1
7
7
1
6
6
1
5
5
1
4
4
1
3
3
1
2
2
1
1
1
1
0 9 8 7 6 5 4 3 2 1 0
0 9 8 7 6 5 4 3 2 1 0
Name
CONFIG_ADDRESS
EN
BUS
DEV
FUN
REG
Operation
R/W
R
R/W
R/W
R/W
R/W
R
R
Reset
1
$00
$00
$00
$0
$00
0
0
Offset
$CF8
$CF9
$CFA
$CFB
Bit (DH)
0 1 2 3 4 5 6 7 8 9
1
0
0
1
1
1
1
2
2
1
3
3
1
4
4
1
5
5
1
6
6
1
7
7
1
8
8
1
9
9
2
0
0
2
1
1
2
2
2
2
3
3
2
4
4
2
5
5
2
6
6
2
7
7
2
8
8
2
9
9
3
0
0
3
1
1
Name
CONFIG_ADDRESS
REG
DEV
FUN
BUS
EN
Operation
R/W
R
R
R/W
R/W
R/W
R/W
R
Reset
$00
0
0
$00
$0
$00
1
$00