Motorola MVME2300 Series User Manual Page 126

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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.
Conceptual perspective from the PCI bus
Perspective from the MPC bus in Big-Endian mode
Offset $CFB $CFA $CF9 $CF8
Bit 3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
09876543210
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)
0123456789
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
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
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