FUJITSU MHV2120AT - Manual (Page 245)

6.1 Device Response to the Reset
C141-E218 6-5
6.1.3 Response to software reset
The master device does not check the DASP- signal for a software reset. If a
slave device is present, the master device checks the PDIAG- signal for up to 15
seconds to see if the slave device has completed the self-diagnosis successfully.
After the slave device receives the software reset, the slave device shall report its
presence and the result of the self-diagnostics to the master device as described
below:
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.
When the IDD is set to a slave device, the IDD asserts the DASP- signal when
negating the PDIAG- signal.
Max. 31 sec.
Max. 30 sec.
Max. 1 ms.
If the slave device is preset, PDIAG- is checked for
up to 31 seconds.
DASP-
PDIAG-
BSY bit
X"00"
X'3F6' Reg.
X"0C"
or X"04"
Status Reg.
BSY bit
Slave device
Master device
Figure 6.3 Response to software reset