6.1 Device Response to the Reset

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.

X'3F6' Reg.

 

 

 

 

 

 

 

X"0C"

 

X"00"

 

 

 

 

Master device

 

or X"04"

 

 

 

 

 

 

 

 

 

 

Status Reg.

 

 

 

 

 

 

 

 

 

 

BSY bit

 

 

 

Max. 31 sec.

 

 

 

 

 

If the slave device is preset, PDIAG- is checked for

 

 

 

 

 

up to 31 seconds.

 

Slave device

BSY bit Max. 1 ms.

PDIAG-

Max. 30 sec.

 

DASP-

Figure 6.3 Response to software reset

C141-E218

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Fujitsu MHV2100AT, MHV2080AT, MHV2120AT, MHV2040AT, MHV2060AT manual Response to software reset