Fujitsu MPB3052AT, MPB3054AT, MPB3032AT, MPB3021AT, MPB3043AT manual 1 Response to power-on

Models: MPB3043AT MPB3021AT MPB3052AT MPB3032AT MPB3054AT

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6.1.1Response to power-on

6.1.1Response to power-on

After the master device (device 0) releases its own power-on reset state, the master device shall check a DASP- signal for up to 450 ms to confirm presence of a slave device (device 1). The master device recognizes 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 power-on 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 (device 1) releases its own power-on reset state, the slave device shall report its presence and the result of power-on diagnostics to the master device as described below:

DASP- signal:

PDIAG- signal:

Master device

Power On Reset-

Status Reg.

BSY bit

Asserted within 400 ms.

Negated within 1 ms and asserted within 30 seconds.

Power on

Max. 31 sec.

Checks DASP- for up to

If presence of a slave device is

450 ms.

confirmed, PDIAG- is checked for

 

up to 31 seconds.

Slave device

Power On Reset-

BSY bit

Max. 1 ms.

PDIAG-

Max. 30 sec.

DASP-

Figure 6.1 Response to power-on Max. 400 ms.

Figure 6.1 Response to power-on

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C141-E045-02EN

Page 157
Image 157
Fujitsu MPB3052AT, MPB3054AT, MPB3032AT, MPB3021AT, MPB3043AT manual 1 Response to power-on