User Manual

LARA-R2 series - System Integration Manual
UBX-16010573 - R02 Objective Specification Design-in
Page 123 of 148
2.14 Schematic for LARA-R2 series module integration
Figure 67 is an example of a schematic diagram where a LARA-R2 series cellular module “02” product version is
integrated into an application board, using all the available interfaces and functions of the module.
TXD
RXD
RTS
CTS
DTR
DSR
RI
DCD
GND
12 TXD
9 DTR
13 RXD
10 RTS
11 CTS
6 DSR
7 RI
8 DCD
GND
3V8
GND
330µF
10nF100nF 56pF
LARA-R2 series
(‘02’ product version)
52 VCC
53 VCC
51 VCC
+
100µF
2 V_BCKP
GND GND
GND
RTC
back-up
1.8V DTE
USB 2.0 Host
18 RESET_N
Application
Processor
Open
Drain
Output
15 PWR_ON
Open
Drain
Output
D+
D-
29 USB_D+
28 USB_D-
15pF
TP
TP
0Ω
0Ω
TP
TP
0Ω
0Ω
TP
TP
47pF
SIM Card Holder
CCVCC (C1)
CCVPP (C6)
CCIO (C7)
CCCLK (C3)
CCRST (C2)
GND (C5)
47pF 47pF 100nF
41VSIM
39SIM_IO
38SIM_CLK
40SIM_RST
47pF
SW1
SW2
4V_INT
42GPIO5
470k
ESD ESD ESD ESD ESD ESD
1k
TP
V_INT
SDIO_CMD
SDIO_D0
SDIO_D3
SDIO_D1
46
47
48
49
SDIO_D2
SDIO_CLK
44
45
VBUS 17 VUSB_DET
100nF
62
ANT2
59ANT_DET
10k
Connector
27pF
ESD
Secondary
Cellular
Antenna
33pF
82nH
82nH
56
Connector
Primary
Cellular
Antenna
33pF
ANT1
GND
16 GPIO1
3V8
Network
Indicator
RSVD
33 RSVD
99 HSIC_DATA
100 HSIC_STRB
21 HOST_SELECT
TP
TP
8.2pF
Mount for modules
supporting 2G
Mount for modules
supporting LTE band-7
V_INT
BCLK
LRCLK
Audio Codec
MAX9860
SDIN
SDOUT
SDA
SCL
36I2S_CLK
34I2S_WA
35I2S_TXD
37I2S_RXD
19GPIO6 MCLK
IRQn
10k
10µF1µF100nF
VDD
SPK
OUTP
OUTN
MIC
MICBIAS
1µF
2.2k
1µF
1µF
MICLN
MICLP
MICGND
2.2k
ESD ESD
V_INT
10nF10nF
EMI
EMI
27pF27pF
10nF
EMI
EMI
ESD ESD
27pF27pF10nF
24GPIO3
V_INT
B1 A1
GND
B2 A2
VCCB VCCA
SN74AVC2T245
Voltage Translator
100nF
100nF
3V0
TxD1
4.7k
IN
OUT
LDO Regulator
SHDNn
4.7k
3V8 3V0
23GPIO2
V_INT
SDA_A
SDA_B
GND
SCL_A
SCL_B
VCCA
VCCB
TCA9406DCUR
I2C Voltage Translator
100nF
100nF
100nF
47k
SDA2
SCL2
VCC
DIR1
DIR2OEn
OE
GND
EXTINT0GPIO4 25
4.7k4.7k
u-blox GNSS
3.0 V receiver
26SDA
27SCL
GND
Not supported by LARA-R2 series “02” product version
Not supported by LARA-R204 module “02” product version
Figure 67: Example of schematic diagram to integrate a LARA-R2 module “02” product version using all available interfaces