Identify Device
6. ATA Command Specification
SONY AIT-1 Turbo drive SDX-460V series Ver.1.0
6-7
6.4. Identify Device (ECh)
In response to this command the device shall post command aborted and place the PACKET Command feature
set signature in the Command Block registers (see Table 6-13: ATAPI Identification Signature).
Inputs
Register
7 6 5 4 3 2 1 0
Features
na
Sector Count
na
Sector Number
na
Cylinder Low
na
Cylinder High
na
Device/Head
1 na 1 DEV
na na na na
Command
ECh
Device/Head register –
DEV shall indicate the selected device.
Outputs for PACKET Command feature set devices
In response to this command, devices that implement the PACKET Command feature set shall post command
aborted and place the PACKET Command feature set signature in the Command Block registers (see Table 6-13:
ATAPI Identification Signature).
Normal outputs
Command must return error status.
Error outputs
Register
7 6 5 4 3 2 1 0
Error
04h
Sector Count
01h
Sector Number
01h
Cylinder Low
14h
Cylinder High
EBh
Device/Head
1 na 1 DEV
na na na na
Status
BSY DRDY DF DSC DRQ na na ERR
Device/Head register –
DEV shall indicate the selected device.
Status register –
BSY shall be cleared to zero indicating command completion.
DRDY shall be set to one.
DF (Device Fault) shall be cleared to zero.
DSC shall be set to one.
DRQ shall be cleared to zero.
ERR shall be set to one.
Prerequisites
DRDY set equal to one.