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Preliminary
CF CONTROLLER
S3C2451X RISC MICROPROCESSOR
8-16
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_CONTROL REGISTER
Register Address
R/W
Description
Reset
Value
ATA_CONTROL
0x4B801900
R/W
ATA Control register
0x0000_0002
ATA_CONTROL Bits
Description
R/W Reset
Value
Reserved [31:2]
Reserved bits
R
0x0
clk_down_ready
[1]
Status for clock down
This bit is asserted in idle state when ATA_CONTROL bit
[0] is zero.
0 : not ready for clock down
1 : ready for clock down
R 0x1
ata_enable [0]
ATA
enable
0 : ATA is disabled and preparation for clock down
maybe in progress
1 : ATA is enabled.
R/W 0x0
ATA_STATUS REGISTER
Register Address
R/W
Description
Reset
Value
ATA_STATUS
0x4B801904
R
ATA Status register
0x0000_0000
ATA_STATUS Bits
Description
R/W
Reset
Value
Reserved [31:6]
Reserved bits
R
0x0
atadev_cblid
[5]
ATA cable identification
R
0x0
atadev_irq
[4]
ATA interrupt signal line
R
0x0
atadev_iordy
[3]
ATA iordy signal line
R
0x0
atadev_dmareq
[2]
ATA dmareq signal line
R
0x0
xfr_state
[1:0]
Transfer state
2’b00 : idle state
2’b01 : transfer state
2’b11 : wait for completion state
R 0x0