Fujitsu MHT2040AT User Manual

6-4

C141-E192-01EN

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.

.

Max. 31 sec.

Max. 450 ms.

Max. 30 sec.

Max. 1 ms.

If presence of a slave device is
confirmed, PDIAG- is checked for
up to 31 seconds.

Checks DASP- for up to
500 ms.

DASP-

PDIAG-

BSY bit

Reset-

Status Reg.
BSY bit

Slave device

Master device

Note: Master Device does not check the DASP signal assertion for 2ms upon receipt of hardware

reset.