lumit4510原理图中的SDRAM到底多大？

whuhu

你好！lumit4510原理图中的SDRAM到底多大？原理图中用的是128Mbit（16MB)的两片芯片合计32MB，可是你们老说的是16MB(两片64Mbit)的资源，到底是多少？4510B能够支持32MB的SDRAM?
谢谢！

lumit-support-1

我的板子还没仔细看。不过16和32M都应该是可以支持的

whuhu

按照4510的说明书，它最大支持到16MB，32MB的无法支持？

whuhu

S3C4510B can support below SDRAM configuration for 1 bank.
· 2MBytes to 1 bank ® 1 ´ (2Mx32 with 4banks)
· 4MBytes to 1 bank ® 2 ´ (1Mx16 with 2banks)
· 8MBytes to 1 bank ® 4 ´ (2Mx8 with 2banks)
· 16MBytes to 1bank ® 2 ´ (4Mx16 with 2/4banks)
· 32MBytes to 1bank ® 4 ´ (8Mx8 with 2/4banks)
You can select any combination among them.
SDRAM components that are available are as follow.
x4 SDRAM whose capacity is larger than 16M SDRAM is not supported at S3C4510B.
16M bit SDRAM
— 4Mx4 with 2banks (Supported) RA0–RA10, CA0–CA9
— 2Mx8 with 2banks (Supported) RA0–RA10, CA0–CA8
— 1Mx16 with 2banks (Supported) RA0–RA10, CA0–CA7
64M bit 2Banks SDRAM
— 16Mx4 with 2banks (not supported) RA0–RA12, CA0–CA9
— 8Mx8 with 2banks (supported) RA0–RA12, CA0–CA8
— 4Mx16 with 2banks (supported) RA0–RA12, CA0–CA7
64M bit 4Banks SDRAM
— 16Mx4 with 4banks (not supported) RA0–RA11, CA0–CA9
— 8Mx8 with 4banks (supported) RA0–RA11, CA0–CA8
— 4Mx16 with 4banks (supported) RA0–RA11, CA0–CA7
2Mx32 (64M bit) SDRAM
— 2Mx32 with 4banks (supported) RA0–RA10, CA0–CA7
100 Pin DIMM Module SDRAM
KMM330S104CT
— 1Mx32 based on 2 1Mx16 2banks components RA0–RA10, CA0–CA7