Operations

6.1.2 Response to hardware reset

Response to RESET- (hardware reset through the interface) is similar to the power-on reset.

Upon receipt of hardware reset, the master device checks a DASP- signal for up to 450 ms to confirm presence of a slave device. The master device recognizes the presence of the slave device when it confirms assertion of the DASP- signal. Then the master device checks a PDIAG- signal to see if the slave device has successfully completed the self-diagnostics.

If the master device cannot confirm assertion of the DASP- signal within 450 ms, the master device recognizes that no slave device is connected.

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 400 ms.

PDIAG- signal: Negated within 1 ms and asserted within 30 seconds.

Reset-

Master device

Status Reg.

BSY bit

Max. 31 sec.

Slave device

BSY bit

Checks DASP- for up to 450 ms.

Max. 1 ms.

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

PDIAG-

DASP-

Max. 30 sec.

Max. 400 ms.

.

Figure 6.2 Response to hardware reset

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Fujitsu MHL2300AT, MHM200AT, MHM2100AT, MHM215OAT manual Response to hardware reset

MHM215OAT, MHM200AT, MHL2300AT, MHM2100AT specifications

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