Sdram Special Registers - Samsung S3C2500B User Manual

S3C2500B

5.7.9 SDRAM SPECIAL REGISTERS

The address and reset value of the special registers in the SDRAM controller summarized in Table 5-24.
Name Address
CFGREG 0xF0020000
CMDREG 0xF0020004
REFREG 0xF0020008
WBTOREG 0xF002000C
5.3.9.1 Configuration Register
The configuration register is 32-bit read/write (some bits are read only) register. This register contains SDRAM
control parameters such as external bus width, memory type, and various timing parameters.
Registers Address
CFGREG 0xF0020000
Table 5-24. SDRAM Special Registers
Configuration register
Command register
Refresh timer register
Write buffer time-out register
Table 5-25. SDRAM Configuration Register
R/W
R/W SDRAM Configuration register
Description
Description
MEMORY CONTROLLER
Reset value
0x00099F0C
0x00000000
0x00000020
0x00000000
Reset value
0x00099F0C
5-47