Quantum Audio STT2401A, STT3401A CHECK POWER MODE (ATA Command E5)

ATAPI Interface Chapter 5
Seagate Travan 40 Product Manual Page 93
CHECK POWER MODE (ATA Command E5)
The CHECK POWER MODE command allows the Host to determine the power
mode of the selected device. The device does not disconnect from the bus while
executing this command.
Host Taskfile Registers—Inputs
Data Bits
Host Taskfile
Register 7 6 5 4 3 2 1 0 HEX
Features N/A N/A
Sector Count N/A N/A
Sector Number N/A N/A
Byte Count
High N/A N/A
Byte Count
Low N/A N/A
Device/Head rsvd LBA rsvd DEV SAM LUN (not used)
Command command E5
Host Taskfile Registers—Normal Outputs
Data Bits
Host Taskfile
Register 7 6 5 4 3 2 1 0 HEX
Error rsvd tag type (not supported) MCH ABRT EOM ILI 00
Sector Count N/A N/A
Sector Number result value
00h device is in Standby mode
80h device is in Idle mode
FFh device is in Active or Idle mode
N/A
Byte Count
High N/A N/A
Byte Count
Low N/A N/A
Device/Head rsvd LBA rsvd DEV SAM LUN (not used)
Status BSY RDY rsvd DSC DRQ Corr rsvd CHK 50