Fujitsu MHU2100AT 用户手册

6-4 C141-E202-01EN 

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.