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Page 80 of 92
RZ/G1H Qseven SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
3.1.2
Power Input Sequencing
The RZ/G1H Qseven SOM
’s
Power Input sequence requirement is explained below.
Power up Sequence:
•
VCC_RTC must come up at the same time or before VCC comes up.
•
PWGIN signal from Qseven Edge must be active at the same time or after VCC comes up.
Power down Sequence:
•
PWGIN signal from Qseven Edge must be inactive at the same time or before VCC goes down.
•
VCC must go down at the same time or before VCC_RTC goes down.
Figure 9: Qseven SOM Power Sequence
Table 16: Power Sequence Timing
Item
Description
Value
T1
VCC_RTC rise time to VCC rise time
≥ 0 ms
T2
VCC rise time to PWGIN rise time
≥ 0 ms
T3
PWGIN fall time to VCC fall time
≥ 0 ms
T4
VCC fall time to VCC_RTC fall time
≥ 0 ms
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