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ATSAM4S-XPLD
422
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
26.15 Static Memory Controller (SMC) User Interface
The SMC is programmed using the registers listed in
. For each chip select, a set of 4 registers is used to program the
, “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 26-7. Register Mapping
Offset
Register
Name
Access Reset
0x10 x CS_number + 0x00
SMC Setup Register
SMC_SETUP
Read-write
0x01010101
0x10 x CS_number + 0x04
SMC Pulse Register
SMC_PULSE
Read-write
0x01010101
0x10 x CS_number + 0x08
SMC Cycle Register
SMC_CYCLE
Read-write
0x00030003
0x10 x CS_number + 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
-
-
-