AT INTERFACE and ATA COMMANDS
WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 6-5
6-2-3-14 RESET- (Drive Reset)
This signal is asserted from the host system to reset the drive. It shall be asserted for at
least 25
µ
sec after voltage levels have stabilized during power on and negated thereafter
unless some event requires that the drive(s) be reset following power on.
Table 6-1 shows the correlation between the signals at the ATA interface and the host
AT bus.
Table 6-1.
AT-Bus Interface Signals
Drive Connector
Direction
AT System BUS
Signal Name
Pin No.
RESET-
1
←
RESET DRV
Ground
2
Ground
DB7
3
←→
SD7
DB8
4
←→
SD8
DB6
5
←→
SD6
DB9
6
←→
SD9
DB5
7
←→
SD5
DB10
8
←→
SD10
DB4
9
←→
SD4
DB11
10
←→
SD11
DB3
11
←→
SD3
DB12
12
←→
SD12
DB2
13
←→
SD2
DB13
14
←→
SD13
DB1
15
←→
SD1
DB14
16
←→
SD14
DB0
17
←→
SD0
DB15
18
←→
SD15
Ground
19
Ground
Keypin
20
No Connection