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3.4.1.3. Turn on the Module with Compatible Design
The following figure shows a compatible design to turn on the module automatically after power-up or by
host.
Host
GPIO
Notes:
1. The voltage of pin 6 should be no less than 1.19V when it is at HIGH level.
2. The VCC represents the power supply of the module.
The turn-on scenario is illustrated in the following figure.
FULL_CARD_POWER_OFF#
RFFE_VIO_1V8
USIM1_VDD / USIM2_VDD
NOTES
1.
t
is time the interval between VCC and RESET_N HIGH level, which is a typically 33 ms. It is
power-on
measured when RESET_N is not pulled down by the host device.
2.
t
is the time interval between FULL_CARD_POWER_OFF# HIGH level and RFFE_VIO_1V8(an
turn-on
RM502Q-GL_Hardware_Design
Auto turn on
R1
10k
R2
NM
VCC
R1
10k
R2
NM_0Ω
Figure 8: Turn on the Module with Compatible Design
Module power-on or insertion detection
VCC
t
power-on
RESET_N
Module Status
Inactive
t
0
Figure 9: Turn-on Timing of the Module
Turn on by host
NM
0Ω
FULL_CARD_POWER_OFF#
33 ms
System turn-on and booting
t
68 ms
turn-on
TBD
System booting
t
booting
5G Module Series
RM502Q-GL Hardware Design
Module
6
PMU
R4
100k
≥ 1.19 V
V
IH
1.8 V or 3.0 V
Active
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