Samsung YP-P10 User Manual Page 214

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NAND FLASH CONTROLLER S3C2440A RISC MICROPROCESSOR
6-2
BLOCK DIAGRAM
SFR
ECC
Gen.
Stepping Stone
(4KB SRAM)
Stepping Stone Controller
SYSTEMBUS
NAND FLASH
Interface
CLE
ALE
nFCE
nFRE
nFWE
FRnB
I/O0 - I/O15
AHB
Slave I/F
Control &
State Machine
Figure 6-1. NAND Flash Controller Block Diagram
BOOT LOADER FUNCTION
Stepping Stone
(4KB Buffer)
NAND FLASH
Controller
NAND FLASH
Memory
Special Function
Registers
REGISTERS
AUTO BOOT
CORE ACCESS
(Boot Code)
USER ACCESS
Figure 6-2. NAND Flash Controller Boot Loader Block Diagram
During reset, Nand flash controller will get information about the connected NAND flash through Pin status
(NCON(Adv flash), GPG13(Page size), GPG14(Address cycle), GPG15(Bus width) – refer to PIN
CONFIGURATION), After power-on or system reset is occurred, the NAND Flash controller load automatically the 4-
KBytes boot loader codes. After loading the boot loader codes, the boot loader code in steppingstone is executed.
NOTE
During the auto boot, the ECC is not checked. So, the first 4-KB of NAND flash should have no bit error.
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