Motorola MVME1X7P User Manual
Programming Model
http://www.motorola.com/computer/literature
4-33
4
SDRAM Configuration Register
SDCFG2-SDCFG0
Define the physical SDRAM memory population on the
printed circuit board:
printed circuit board:
ADR/SIZ
1st $FFF4307c/2nd $FFF4317c (8-bits)
BIT
31
30
29
28
27
26
25
24
NAME
0
0
0
0
0
SDCFG2 SDCFG1 SDCGF0
OPER
R
R
R
R
R
R
R
R
RESET
0 PLS
0 PLS
0 PLS
V PLS
V PLS
V PLS
V PLS
V PLS
SDCFG2
SDCFG1
SDCFG0
DRAM Array Size
0
0
0
SDRAM device is 64MBit x 16 data with
one bank composed of 3 devices
one bank composed of 3 devices
0
0
1
SDRAM device is 64MBit x 8 data with
one bank composed of 5 devices
one bank composed of 5 devices
0
1
0
SDRAM device is 64MBit x 8 data with
two banks composed of 5 devices each
two banks composed of 5 devices each
0
1
1
SDRAM device is 64MBit x 8 data with
four banks composed of 5 devices each
four banks composed of 5 devices each
1
0
0
SDRAM device is 128MBit x 8 data with
one bank composed of 5 devices
one bank composed of 5 devices
1
0
1
SDRAM device is 128MBit x 8 data with
two banks composed of 5 devices each
two banks composed of 5 devices each
1
1
0
reserved
1
1
1
reserved