6 identify packet device (a1h) – FUJITSU MCJ3230AP User Manual
Page 98
Host Interface
4-26
C156-E205-01EN
!
When the Eject switch is pressed
!
When media is write-protected
Otherwise, the command ends normally. If a hardware error by which the
command cannot be executed occurs, as is the case with other commands, the
command ends with Aborted Command.
Table 4.25 Error register
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
WP
MC
0
MCR
0
NM
0
WP: Set to 1 when write-protected.
MC: Set to 1 when media is exchanged. Reported only once.
MCR: Set to 1 when the Eject switch is pressed. Reported only once.
NM: Set to 1 when no media is inserted.
If this command is received while the media status notification function is
disabled, this command responds with the ODD status assuming that the media
status notification function is enabled. Subsequently, this command operates
assuming that the media status notification function is enabled until it is set to
disabled.
4.5.6 IDENTIFY PACKET DEVICE (A1h)
Table 4.26 IDENTIFY PACKET DEVICE command
Bit
7
6
5
4
3
2
1
0
CM
1
0
1
0
0
0
0
1
DH
X
X
X
DEV
X
X
X
X
CH
X
X
X
X
X
X
X
X
CL
X
X
X
X
X
X
X
X
SN
X
X
X
X
X
X
X
X
SC
X
X
X
X
X
X
X
X
FR
X
X
X
X
X
X
X
X
When the ODD receives this command, it transfers device parameter information
to the host. It accepts this command even if in standby mode.
Table 4.27 lists the transfer data format. The reserved word indicates a value of 0.