ATA-Disk Module
SST58SM008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192
SST58LM008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192
Advance Information
3.2.1.5 Idle - 97H or E3H
Bit ->
7
6
5
4
3
2
1
0
Command (7)
97H or E3H
C/D/H (6)
X
Drive
X
Cyl High (5)
X
Cyl Low (4)
X
Sec Num (3)
X
Sec Cnt (2)
Timer Count (5 msec increments)
Feature (1)
X
This command causes the ADM to set BSY, enter the Idle Mode, clear BSY and generate an interrupt. If the
sector count is non-zero, it is interpreted as a timer count with each count being 5 milliseconds and the
automatic power down mode is enabled. If the sector count is zero, the automatic power down mode is also
enabled, the timer count is set to 3, with each count being 5 ms. Note that this time base (5 msec) is different
from the ATA specification.
3.2.1.6 Idle Immediate - 95H or E1H
Bit ->
7
6
5
4
3
2
1
0
Command (7)
95H or E1H
C/D/H (6)
X
Drive
X
Cyl High (5)
X
Cyl Low (4)
X
Sec Num (3)
X
Sec Cnt (2)
X
Feature (1)
X
This command causes the ADM to set BSY, enter the Idle Mode, clear BSY and generate an interrupt.
3.2.1.7 Initialize Drive Parameters - 91H
Bit ->
7
6
5
4
3
2
1
0
Command (7)
91H
C/D/H (6)
X
0
X
Drive
Max Head (no. of heads-1)
Cyl High (5)
X
Cyl Low (4)
X
Sec Num (3)
X
Sec Cnt (2)
Number of Sectors
Feature (1)
X
This command enables the host to set the number of sectors per track and the number of heads per
cylinder. Only the Sector Count and the Drive/Head registers are used by this command.
©2001 Silicon Storage Technology, Inc.
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