Справочник Пользователя для Novatel Wireless NRM-EU870D
38
Novatel Wireless
Revision 1
The reserved pins should not be connected on the SIM connector. The SIM connector need not
have contacts at these locations.
have contacts at these locations.
Implementation
Refer to the figure below for the recommended circuit.
IO
C1
CLK
RST
VCC
VPP
GND
HSDPA
Module
Module
C2
C3
0.1 uF
SIM
Connector
C7
C3
C2
C1
C6
C5
pin 10
pin 12
pin 14
pin 8
pin 16
R1
D1
SRV05-4.TCT
6V
SRV05-4.TCT
6V
R3
R2
Figure 8: Reference circuit
C1, C2, C3
C1, C2 and C3 are not to be populated. They exist if additional filtering is required. These
components should be placed close to the SIM connector.
R1
R1 should be zero ohms. It exists if additional filtering is required.
R2
R2 should be zero ohms. It exists if additional filtering is required.
R3
R3 should be not be populated. It exists if pull-up adjustments are required.