82443BX Datasheet, PDF (107/132 Pages) Intel Corporation – Host Bridge/Controller

Functional Description
This address multiplexing scheme is derived from Table 4-11 which depicts the addressing
requirements for each of the row/column organizations for each row size. The SDRAM
components used for the options shown in the table are as follows:
Option
2 (16MB)
3 (32MB)
4 (64MB)
5 (128MB)
SDRAM Component Type
2Mx8
4Mx16 or 4Mx4 (Registered DIMM only)
8Mx8
16Mx4 (Registered DIMM only)
Note: Both 4Mx4 and 16Mx4 SDRAM devices are supported in the form of Registered DIMMs only.
Table 4-10. Supported Memory Configurations
DRAM Attributes
DRAM DIMM
DRAM
Addressing
MA
DRAM
Size
Type Tech Depth Width SS x64 DS x64
EDO 4M
1M
4
1M
2M Symmetric
1M
4
1M
2M Asymmetric
EDO 16M
2M
8
2M
4M Asymmetric
2M
8
2M
4M Asymmetric
2M
8
2M
4M Asymmetric
4M
4
4M
8M Symmetric
4M
4
4M
8M Asymmetric
4M
4
4M
8M Asymmetric
EDO 64M
4M
16
4M
8M Symmetric
4M
16
4M
8M Asymmetric
4M
16
4M
8M Asymmetric
8M
8
8M
16M Asymmetric
16M
4
16M 32M Symmetric
SDRAM 16M
2M
8
2M
4M Asymmetric
2M
8
2M
4M Asymmetric
4M
4
4M
8M Asymmetric
4M
4
4M
8M Asymmetric
SDRAM 64M
4M
16
4M
8M Asymmetric
4 bank 8M
8
8M
16M Asymmetric
16M
4
16M 32M Asymmetric
Row
Col
Banks
Min
(1 row)
10 10 NA 8 MB
11
9
NA 8 MB
11 10 NA 16 MB
12
9
NA 16 MB
13
8
NA 16 MB
11 11 NA 32 MB
12 10 NA 32 MB
14
8
NA 32 MB
11 11 NA 32 MB
12 10 NA 32 MB
14
8
NA 32 MB
12 11 NA 64 MB
12 12 NA 128 MB
12
9
2 16 MB
13
8
2 16 MB
12 10
2 32 MB
14
8
2 32 MB
14
8
4 32 MB
14
9
4 64 MB
14 10
4 128 MB
82443BX Host Bridge Datasheet
4-21