System Information
System Board
Appendix B
126
Figure B-2
Memory Block Diagram
DIMMs
The memory subsystem will only support DDR SDRAM (Double Data Rate Synchronous Dynamic Random
Access Memory) technology utilizing industry-standard PC2100 type DDR SDRAM DIMMs, 1.2" tall. This is
expected to be the standard height available at first release and is currently being used by high-volume
products. The DIMMs use a 184-pin JEDEC standard connector.
DIMMs must be loaded in pairs. To enable chip sparing, four DIMMs of the same density must be loaded with
specific configuration rules. The following table summarizes memory solutions:
Table B-1
Memory Array Capacities
Min. /
Max
Memory
Size
Single
DIMM
Size
DDR SDRAM Count, Type and Technology
0.5GB /
3GB
256MB
DIMM18 x 32Mb x 4 DDR SDRAMs (128Mb)
1GB / 4GB
512MB
DIMM18 x 32Mb x 4 DDR SDRAMs (256Mb)
2GB / 8GB
1024MB
DIMM18 x 64Mb x 4 DDR SDRAMs (512Mb)
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