
Preliminary
CF CONTROLLER
S3C2451X RISC MICROPROCESSOR
8-28
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
ATA_PIO_CSD REGISTER
Register Address
R/W
Description
Reset
Value
ATA_PIO_CSD
0x4B801970
W
8-bit PIO device command/status register
0x0000_0000
ATA_PIO_CSD Bits
Description
R/W Reset
Value
Reserved [31:8]
Reserved bits
R
0x0
pio_dev_csd
[7:0]
8-bit PIO device command/status (command block)
register
W 0x00
NOTE:
pio_dev_csd can be read by accessing register ATA_PIO_RDATA
ATA_PIO_DAD REGISTER
Register Address
R/W
Description
Reset
Value
ATA_PIO_DAD
0x4B801974
W
8-bit PIO device control/alternate status register
0x0000_0000
ATA_PIO_DAD Bits
Description
R/W Reset
Value
Reserved [31:8]
Reserved bits
R
0x0
pio_dev_dad
[7:0]
8-bit PIO device control/alternate status (control block)
register
W 0x00
NOTE:
pio_dev_dad can be read by accessing register ATA_PIO_RDATA
ATA_PIO_RDATA REGISTER
Register Address
R/W
Description
Reset
Value
ATA_PIO_
RDATA
0x4B80197C
R
PIO read data register
0x0000_0000
ATA_PIO_
RDATA
Bits Description R/W
Reset
Value
Reserved [31:16]
Reserved bits
R
0x0
pio_rdata
[15:0]
PIO read data register while HOST read from ATA device
register
R 0x0000