Motorola MVME2300 Series 用户手册
2-54
Computer Group Literature Center Web Site
Raven PCI Bridge ASIC
2
PCI Slave Address (0,1,2 and 3) Registers
To initiate an MPC cycle from the PCI bus, the PCI address must be greater
than or equal to the START field and less than or equal to the END field.
than or equal to the START field and less than or equal to the END field.
START
Start Address. Determines the start address of a
particular memory area on the PCI bus which will be used
to access MPC bus resources. The value of this field will
be compared with the upper 16 bits of the incoming PCI
address.
particular memory area on the PCI bus which will be used
to access MPC bus resources. The value of this field will
be compared with the upper 16 bits of the incoming PCI
address.
END
End Address. Determines the end address of a particular
memory area on the PCI bus which will be used to access
MPC bus resources. The value of this field will be
compared with the upper 16 bits of the incoming PCI
address.
memory area on the PCI bus which will be used to access
MPC bus resources. The value of this field will be
compared with the upper 16 bits of the incoming PCI
address.
Offset
PSADD0 - $80
PSADD1 - $88
PSADD2 - $90
PSADD3 - $98
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
PSADDx
START
END
Operation
R/W
R/W
Reset
$0000
$0000