u-blox SARA-G3 Series System Integration Manual page 166

3V8
51 VCC
52 VCC
+
53 VCC
330µF 100nF 10nF 56pF 15pF
GND
V_BCKP
2 V_BCKP
RTC
100µF
back-up
GND
Application
Processor
100kΩ
TP
15 PWR_ON
Open
Drain
Output
TP
18 RESET_N
Open
Drain
Output
1.8V DTE
TXD 12 TXD
RXD 13 RXD
RTS 10 RTS
CTS 11 CTS
DTR 9 DTR
DSR 6 DSR
RI 7 RI
DCD 8 DCD
GND GND
1.8V DTE
0Ω TP
TXD 29 TXD_AUX
0Ω
TP
RXD 28 RXD_AUX
GND GND
3V8
Network
Indicator
16 GPIO1
33 RSVD
31 RSVD
17 RSVD
19 RSVD
Figure 64: Example of schematic diagram to integrate SARA-G350 module in an application board, using all the interfaces
UBX-13000995 - R06
SARA-G3 series - System Integration Manual
SARA-G350
33pF
ANT 56
10k
ANT_DET 62
27pF
ESD
1k
TP
V_INT 4
SIM _DET 42
VSIM 41
SIM _IO 39
SIM _CLK 38
SIM _RST 40
47pF 47pF 47pF
470k
LDO Regulator
3V8
IN
GPIO2
23 SHDN
47k
SDA 26
SCL 27
GPIO3 24
GPIO4 25
2.2k
M IC_BIAS 46
10uF
M IC_P 49
100nF
M IC_N 48
100nF
M IC_GND 47
SPK_P 44
SPK_N 45
I2S_RXD 37
I2S_CLK 36
I2S_TXD
35
I2S_WA 34
Objective Specification
External
Connector
Antenna
82nH
47pF 100nF
ESD ESD ESD ESD ESD ESD
1V8_GPS
OUT VCC
GND 4.7k 4.7k
SDA2
SCL2
TxD1
EXTINT0
2.2k 2.2k
82nH
2.2k 82nH
Connector
27pF 27pF
ESD ESD
Connector
27pF 27pF
ESD ESD
I2S Data Output
I2S Clock
I2S Data Input
I2S Word Alligment
SIM Card Holder
SW1
SW2
CCVCC (C1)
CCVPP (C6)
CCIO (C7)
CCCLK (C3)
CCRST (C2)
GND (C5)
u-blox 1.8 V
GNSS Receiver
Microphone
Speaker
1.8V Digital
Audio Device
Design-in
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