NEXCOM NViS 3620 - Manual (Page 21)

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Chapter 2: External Connectors Pinout Description
NViS3620/3720 series User Manual
Reset
Connector Number: 3
Pin Definition
1 GND
2 RESET
1 2
SIM1 and SIM2 Sockets For CN23 and CN21
Connector Number: 4
Pin Definition Pin Definition
C1 SIM PWR C5 GND
C2 SIM RST C6 NC
C3 SIM CLK C7 SIM DAT
SW1 NC SW2 NC
Pin Definition Pin Definition
C1 SIM PWR C5 GND
C2 SIM RST C6 NC
C3 SIM CLK C7 SIM DAT
SW1 NC SW2 NC
C5
C6
C7 C1
C2
C3
SW SW
SIM 1
SIM 2