Figure 6.2 Response To Hardware Reset - Fujitsu MHT2080AH - 80GB 5400 RPM PATA Hard Drive Product Manual

Operations
After the slave device receives the hardware reset, the slave device shall report its
presence and the result of the self-diagnostics to the master device as described
below:
DASP- signal: Asserted within 450 ms.
PDIAG- signal: Negated within 1 ms and asserted within 30 seconds.
The asserted PDIAG-signal is negated 30 seconds after it is asserted if the
command is not received.
Reset-
Master device
Status Reg.
BSY bit
Slave device
BSY bit
PDIAG-
DASP-
.
Note: Master Device does not check the DASP signal assertion for 2ms upon receipt of hardware
reset.
6-4
Checks DASP- for up to
500 ms.
Max. 1 ms.

Figure 6.2 Response to hardware reset

Max. 31 sec.
If presence of a slave device is
confirmed, PDIAG- is checked for
up to 31 seconds.
Max. 30 sec.
Max. 450 ms.
C141-E195-02EN