C141-E045-02EN
5 - 36
At command issuance (I/O registers setting contents)
1F7
H
(CM)
1
1
0
0
0
1
1
0
1F6
H
(DH)
×
×
×
DV
xx
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(FR)
xx
xx
xx
Sector count/block
xx
At command completion (I/O registers contents to be read)
1F7
H
(ST)
Status information
1F6
H
(DH)
×
×
×
DV
xx
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(ER)
xx
xx
xx
Sector count/block
Error information
After power-on or after hardware reset, the READ MULTIPLE and WRITE MULTIPLE
command operation are disabled as the default mode.
Regarding software reset, the mode set prior to software reset is retained after software reset.
The parameters for the multiple commands which are posted to the host system when the
IDENTIFY DEVICE command is issued are listed below. See Subsection 5.3.2 for the
IDENTIFY DEVICE command.
Word 47 = 0020:
Word 59 = 0000:
= 01xx:
Maximum number of sectors that can be transferred per interrupt by the
READ MULTIPLE and WRITE MULTIPLE commands are 32 (fixed).
The READ MULTIPLE and WRITE MULTIPLE commands are
disabled.
The READ MULTIPLE and WRITE MULTIPLE commands are
enabled. "xx" indicates the current setting for number of sectors that can
be transferred per interrupt by the READ MULTIPLE and WRITE
MULTIPLE commands.
e.g. 0110 = Block count of 16 has been set by the SET MULTIPLE
MODE command.
Summary of Contents for MPB3021AT
Page 1: ...C141 E045 02EN MPB3021AT MPB3032AT MPB3043AT MPB3052AT MPB3064AT DISK DRIVES PRODUCT MANUAL ...
Page 3: ......
Page 7: ......
Page 15: ......
Page 31: ......
Page 33: ...C141 E045 02EN 3 2 Figure 3 1 Dimensions ...
Page 48: ...C141 E045 02EN 4 5 Figure 4 2 MPB30xxAT Block diagram ...
Page 54: ...C141 E045 02EN 4 11 Figure 4 4 Read write circuit block diagram ...
Page 56: ...C141 E045 02EN 4 13 Figure 4 6 PR4 signal transfer ...