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L810-MiniPCIeHardware User Manual
Page 12 of 26
Note:
If the Tr1 is over spec., it will affect the module when starting up.
During the process of starting-up, PERST# shall keep high.
3.2.2 Falling Time
As for the power supply to the module, before the supply voltage rises again, the falling time for the power
supply is shown in Figure 3-2:
Figure 3-2 Falling Time for Power Supply
Timing description
Requirement
Td1
Falling time from 3.3V to 2.5V
less than 45 ms
Note:
If the Td1 is over spec., it will affect the module next time when it starts up.
3.3 Logic Level
3.3VAUX is the power supply for the module, and it is the reference voltage level for indicating signals and
digital signals.
The effective voltage ranges listed in the following tables:
Parameter
Minimum value
Recommended value
Maximum value
Unit
3.3VAUX
3.0
3.3
3.6
V
VIH
2.1
3.3
3.6
V
VIL
-0.5
0
0.8
V
