
iv
S3C24A0A MICROPROCESSOR
Table of Contents
(Continued)
Chapter 3
SDRAM Controller
Overview....................................................................................................................................................... 3-1
Selection of SDRAM..................................................................................................................................... 3-2
Selection of SDRAM..................................................................................................................................... 3-2
SELF Refresh....................................................................................................................................... 3-2
SDRAM Initialization Sequence........................................................................................................... 3-3
SDRAM Configuration Register.................................................................................................................... 3-6
SDRAM Control Register..................................................................................................................... 3-7
Refresh Control Register ..................................................................................................................... 3-8
Chapter 4
NAND Flash Controller
Overview....................................................................................................................................................... 4-1
Features............................................................................................................................................... 4-1
Pin Configuration ................................................................................................................................. 4-2
Block Diagram .............................................................................................................................................. 4-3
Boot Loader Function ................................................................................................................................... 4-4
Auto Load Mode ........................................................................................................................................... 4-6
Auto Load Programming Guide ........................................................................................................... 4-6
Auto Store Mode........................................................................................................................................... 4-7
Auto Store Programming Guide........................................................................................................... 4-7
Software Mode.............................................................................................................................................. 4-8
Stepping Stone (4K-Byte SRAM) ................................................................................................................. 4-9
Error Correction Code .................................................................................................................................. 4-9
ECC Module Features ......................................................................................................................... 4-10
ECC Programming Guide.................................................................................................................... 4-10
NAND Flash Memory Configurations ........................................................................................................... 4-11
NAND Flash Controller Special Registers.................................................................................................... 4-13
Configuration Register......................................................................................................................... 4-13
Control Register................................................................................................................................... 4-14
Command Register.............................................................................................................................. 4-15
Address Register ................................................................................................................................. 4-15
Main Data Area ECC0 Register........................................................................................................... 4-16
Main Data Area ECC1 Register........................................................................................................... 4-16
Main Data Area ECC2 Register........................................................................................................... 4-16
Main Data Area ECC3 Register........................................................................................................... 4-17
Spare Area ECC0 Register................................................................................................................. 4-17
Spare Area ECC1 Register.................................................................................................................. 4-17
Control Status Register........................................................................................................................ 4-18
ECC0 Status Register.......................................................................................................................... 4-19
ECC1 Status Register.......................................................................................................................... 4-19
Main Data Area ECC0 Status Register................................................................................................ 4-20
Main Data Area ECC1 Status Register................................................................................................ 4-20
Spare Area ECC Status Register ........................................................................................................ 4-20
Start Block Address Register............................................................................................................... 4-21
END Block Address Register............................................................................................................... 4-21