Fujitsu MHT2030AT Manual/User Guide - Page 224
PDIAG- signal, Asserted within 450 ms.
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Operations 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. ResetMaster device Status Reg. BSY bit Slave device Max. 31 sec. Checks DASP- for up to 500 ms. If presence of a slave device is confirmed, PDIAG- is checked for up to 31 seconds. BSY bit Max. 1 ms. PDIAGDASP- Max. 30 sec. Max. 450 ms. . Figure 6.2 Response to hardware reset Note: Master Device does not check the DASP signal assertion for 2ms upon receipt of hardware reset. 6-4 C141-E192-02EN