User's Manual

SIM7075G User Manual V1.00
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Table 17: Control voltage rang
Symbol
Parameter
Min.
Typ.
Max.
Unit
VIH
High level input voltage
1.17
1.8
2.1
V
VIL
Low level input voltage
-0.3
0
0.63
V
VOH
High level output voltage
1.35
1.8
1.8
V
VOL
Low level output voltage
0
0
0.45
V
3.9 Network status
The NETLIGHT pin is used to control Network Status LED, its reference circuit is shown in the following
figure.
Figure 24: NETLIGHT reference circuit
The value of the resistor named “R” depends on the LED characteristic.
Table 18: NETLIGHT pin status
NETLIGHT pin status
Module status
64ms ON, 800ms OFF
No registered network
64ms ON, 3000ms OFF
Registered network (PS domain registration success)
NOTE