Check Power Mode
6. ATA Command Specification
SONY AIT-1 Turbo drive SDX-470V series Ver.1.0
6-3
Error outputs
Register
7 6 5 4 3 2 1 0
Error
na ABRT
na
Sector Count
na
Sector Number
na
Cylinder Low
na
Cylinder High
na
Device/Head
1 na 1 DEV
na
Status
BSY DRDY DF DSC DRQ na na CHK
Error register -
ABRT is set to one if the Sony ATAPI Drive is not able to complete the action requested by the
command.
Device/Head register -
DEV indicates the selected device.
Status register -
BSY is cleared to zero when the command is completed.
DRDY is set to one.
DF is set to one if a device fault has occurred.
DSC is set to one.
DRQ is cleared to zero.
CHK is set to one if an Error register bit is set to one.
Prerequisites
DRDY set equal to one.
Description
If the Sony ATAPI Drive is in the Standby mode, the Sony ATAPI Drive sets the BSY bit, sets the Sector Count
register to 0 (00h), clears the BSY bit, and asserts INTRQ.
If the Sony ATAPI Drive is in the Idle mode, the Sony ATAPI Drive sets the BSY bit, sets the Sector Count register
to 128 (80h), clears the BSY bit, and asserts INTRQ.
If the Sony ATAPI Drive is in the Active mode, the Sony ATAPI Drive sets the BSY bit, sets the Sector Count
register to 255 (FFh), clears the BSY bit, and asserts INTRQ.