LEXI-R422 - System integration manual
UBX-23007449 - R02
System description
Page 9 of 108
C1-Public
1.3
Pin-out
lists the pin-out of the LEXI-R422 modules, with pins grouped by function.
Function Name
No
ID
I/O Description
Remarks
Power
VCC
40-42
A12-14
I
Module supply
input
VCC supply circuit affects the RF performance and
compliance of the device integrating the module
with applicable required certification schemes.
See section
for functional description /
requirements.
See section
for external circuit design-in.
GND
1,3,50,52,
53,56-61,
64-70,
73-79,
82-88,
91-97,
100-106,
109-115,
116-124,
125-133
B1,D1,A4,A2,
C3,C7-11,C13,
E6-11,E13,
F6-11,F13,
G6-11,G13,
H6-11,H13,
J6-11,J13,
K6-11,K13,
L3,L5-11,L13,
N3,N5-11,N13
N/A Ground
GND pins are internally connected each other.
External ground connection affects the RF and
thermal performance of the device.
See section
for functional description.
See section
for external circuit design-in.
V_INT
43
A11
O
Generic digital
interfaces supply
output
V_INT = 1.8 V (typical) generated by internal
regulator when the module is switched on, outside
the low power PSM / eDRX deep-sleep mode.
See section
for functional description.
See section
for external circuit design-in.
Provide test point for diagnostic purposes.
System
PWR_CTRL 27
P15
I
Power-on /
power-off /
reset input
Internal pull-up resistor.
See section
for functional
description.
See section
for external circuit design-in.
Provide test point for diagnostic purposes.
Antenna ANT
51
A3
I/O Cellular antenna 50
nominal characteristic impedance.
Antenna circuit affects the RF performance and
application device compliance with required
certification schemes.
See section
for functional description and
requirements.
See section
for external circuit design-in.
ANT_DET
49
A5
I
Antenna
detection
ADC for antenna presence detection function.
See section
for functional description.
See section
for external circuit design-in.
SIM
VSIM
33
H15
O
SIM supply
output
Supply output for external SIM / UICC.
See section
for functional description.
See section
for external circuit design-in.
SIM_IO
32
J15
I/O SIM data
Data input/output for external SIM / UICC.
Internal pull-up to VSIM.
See section
for functional description.
See section
for external circuit design-in.
SIM_CLK
31
K15
O
SIM clock
Clock output for external SIM / UICC
See section
for functional description.
See section
for external circuit design-in.
SIM_RST
30
L15
O
SIM reset
Reset output for 1.8 V / 3 V SIM
See section
for functional description.
See section
for external circuit design-in.
