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Identify Device
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
Features
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
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
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
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.
SONY AIT-2 Turbo drive SDX-560V series Ver.1.0
7
6
5
1
na
1
7
6
5
1
na
1
BSY
DRDY
DF
6. ATA Command Specification
4
3
2
na
na
na
na
na
DEV
na
na
ECh
4
3
2
04h
01h
01h
14h
EBh
DEV
na
na
DSC
DRQ
na
1
0
na
na
1
0
na
na
na
ERR
6-7
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