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MEMORY CONTROLLER S3C2440A RISC MICROPROCESSOR
5-4
SDRAM BANK ADDRESS PIN CONNECTION EXAMPLE
Table 5-2. SDRAM Bank Address Configuration Example
Bank Size Bus Width Base Component Memory Configuration Bank Address
2MByte x8 16Mbit (1M x 8 x 2Bank) x 1 A20
x16 (512K x 16 x 2B) x 1
4MB x16 (1M x 8 x 2B) x 2 A21
x16 (1M x 8 x 2B) x 2
8MB x16 16Mb (2M x 4 x 2B) x 4 A22
x32 (1M x 8x 2B) x 4
x8 64Mb (4M x 8 x 2B) x 1
x8 (2M x 8 x 4B) x 1 A[22:21]
x16 (2M x 16 x 2B) x 1 A22
x16 (1M x 16 x 4B) x 1 A[22:21]
x32 (512K x 32 x 4B) x 1
16MB x32 16Mb (2M x 4 x 2B) x 8 A23
x8 64Mb (8M x 4 x 2B) x 2
x8 (4M x 4 x 4B) x 2 A[23:22]
x16 (4M x 8 x 2B) x 2 A23
x16 (2M x 8 x 4B) x 2 A[23:22]
x32 (2M x 16 x 2B) x 2 A23
x32 (1M x 16 x 4B) x 2 A[23:22]
x8 128Mb (4M x 8 x 4B) x 1
x16 (2M x 16 x 4B) x 1
32MB x16 64Mb (8M x 4 x 2B) x 4 A24
x16 (4M x 4 x 4B) x 4 A[24:23]
x32 (4M x 8 x 2B) x 4 A24
x32 (2M x 8 x 4B) x 4 A[24:23]
x16 128Mb (4M x 8 x 4B) x 2
x32 (2M x 16 x 4B) x 2
x8 256Mb (8M x 8 x 4B) x 1
x16 (4M x 16 x 4B) x 1
64MB x32 128Mb (4M x 8 x 4B) x 4 A[25:24]
x16 256Mb (8M x 8 x 4B) x 2
x32 (4M x 16 x 4B) x 2
x8 512Mb (16M x 8 x 4B) x 1
128MB x32 256Mb (8M x 8 x 4Bank) x 4 A[26:25]
x8 512Mb (32M x 4 x 4B) x 2
x16 (16M x 8 x 4B) x 2
x32 (8M x 16 x 4B) x 2