11.0 General operation descriptions
11.1 Reset response
ATA has the following three types of resets:
The SRST bit in the Device Control Register is set and then is reset. The
device resets the interface circuitry according to the Set Features require
ment.
Soft Reset (Software Reset)
The RESET signal is negated in the ATA Bus. The device resets the
interface circuitry and sets the default values.
Hard Reset (Hardware Reset)
The device executes a series of electrical circuitry diagnostics, spins up
the head disk assembly, tests speed and other mechanical parametric,
and sets default values.
Power On Reset (POR)
The actions of each reset are shown in Figure 57 on page 74.
Travelstar 60GH & 40GN hard disk drive specifications
73
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