Motorola MVME2300 Series - Manual (Page 106)

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Raven PCI Bridge ASIC
2
MPC Arbiter Control Register
This register is not used in MVME2300 series boards.
Prescaler Adjust Register
PADJ Prescaler Adjust. Used to specify a scale factor for the
prescaler to ensure that the time base for the bus timer is
1 MHz. The scale factor is calculated as follows:
PADJ = 256 - Clk,
where Clk is the frequency of the CLK input in MHz. This
register should be written with the value $BE, indicating
a 66MHz MPC bus.
Address $FEFF000C
Bit
0 1 2 3 4 5 6 7 8 9
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 MARB
BREN2 BREN1 BREN0 PK
EN PK
MD GLM
D
BAMD DEF
M
1
DEF
M
0
Operation R R
R R R R R R/W R/W R/W R/W R/W R/W R/W R R R/W R/W
Reset $00 $00
0 0 0 0 0 1 1 1 0 0 0 1 0 0 1 1
Address $FEFF0010
Bit
0 1 2 3 4 5 6 7 8 9
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 PADJ
Operation R R R R/W
Reset $00 $00 $00 $B4