Atmel SAM4S Series, Preliminary Data Sheet

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11100B–ATARM–31-Jul-12
SAM4S Series [Preliminary]
25.15 Static Memory Controller (SMC) User Interface
The SMC is programmed using the registers listed in Table 25-6 . For each chip select, a set of 4 registers is used to pro-
gram the parameters of the external device connected on it. In Table 25-6 , “CS_number” denotes the chip select number.
16 bytes (0x10) are required per chip select.
The user must complete writing the configuration by writing any one of the SMC_MODE registers.
Table 25-6. Register Mapping
Offset Register Name Access Reset
0x10 x CS_ 0x00 SMC Setup Register SMC_SETUP Read-write 0x01010101
0x10 x CS_ 0x04 SMC Pulse Register SMC_PULSE Read-write 0x01010101
0x10 x CS_ 0x08 SMC Cycle Register SMC_CYCLE Read-write 0x00030003
0x10 x CS_ 0x0C SMC Mode Register SMC_MODE Read-write 0x10000003
0x80 SMC OCMS MODE Register SMC_OCMS Read-write 0x00000000
0x84 SMC OCMS KEY1 Register SMC_KEY1 Write once 0x00000000
0x88 SMC OCMS KEY2 Register SMC_KEY2 Write once 0x00000000
0xE4 SMC Write Protect Mode Register SMC_WPMR Read-write 0x00000000
0xE8 SMC Write Protect Status Register SMC_WPSR Read-only 0x00000000
0xEC-0xFC Reserved - - -