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S3C2416 RISC MICROPROCESSOR
NAND FLASH CONTROLLER
7-15
13.3 CONTROL REGISTER
Register
Address
R/W
Description
Reset Value
NFCONT 0x4E000004 R/W NAND
Flash control register
0x000100C6
NFCONT
Bit
Description
Initial State
Reserved [31:19]
Reserved
0
ECC Direction
[18]
4-bit, 8-bitECC encoding / decoding control
0 = Decoding 4-bit, 8bit ECC, It is used for page read
1 = Encoding 4-bit, 8-bit ECC, It is be used for page program
0
Lock-tight [17]
Lock-tight
configuration
0 = Disable lock-tight
1 = Enable lock-tight,
Once this bit is set to 1, you cannot clear. Only reset or wake
up from sleep mode can make this bit disable (cannot
cleared by software).
When it is set to 1, the area setting in NFSBLK
(0x4E000020) to NFEBLK (0x4E000024) is unlocked, and
except this area, write or erase command will be invalid and
only read command is valid.
When you try to write or erase locked area, the illegal
access will be occurred (NFSTAT [5] bit will be set).
If the NFSBLK and NFEBLK are same, entire area will be
locked.
0
Soft Lock
[16]
Soft Lock configuration
0 = Disable lock
1 = Enable lock
Soft lock area can be modified at any time by software.
When it is set to 1, the area setting in NFSBLK
(0x4E000020) to NFEBLK (0x4E000024) is unlocked, and
except this area, write or erase command will be invalid and
only read command is valid.
When you try to write or erase locked area, the illegal
access will be occurred (NFSTAT [5] bit will be set).
If the NFSBLK and NFEBLK are same, entire area will be
locked.
1
Reserved [15:13]
Reserved.
Should be written to 0.
000
EnbECCDecINT
[12]
4-bit, 8-bit ECC decoding completion interrupt control
0 = Disable interrupt
1 = Enable interrupt
0
8bit Stop
[11]
8-bit ECC encoding/decoding operation initialization
0
Summary of Contents for S3C2416
Page 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Page 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Page 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Page 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Page 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Page 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Page 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Page 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Page 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Page 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Page 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...