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TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R28
Design-in
Page 130 of 164
2.16.3
Schematic for TOBY-L2 module “02”, “03” or “62” product versions
is an example of a schematic diagram where a TOBY-L2 cellular module “02”, “03” or “62”
product version is integrated into an application board, using all the available interfaces and functions
of the module.
3V8
GND
330
µ
F 100nF 10nF
TOBY-L2 module ’02’, ‘03’ or ’62’ version
71
VCC
72
VCC
70
VCC
3
V_BCKP
68pF 15pF 8.2pF
+
100
µ
F
+
GND
RTC
back-up
26
HOST_SELECT0
62
HOST_SELECT1
SDA
SCL
55
54
RSVD
RSVD
6
21
GPIO1
Wi-Fi enable
ELLA-W131
Wi-Fi module
ANT1
29
ANT2
26
BPF
LDO regulator
3V8
OUT
IN
VIO
5
1V8
6
LDO regulator 3V3
3V8
OUT
IN
GND
SHDNn
3V3
4
1V8
IN
GND
SHDNn
V_INT
470k
65
SDIO_CMD
66
SDIO_D0
68
SDIO_D1
63
SDIO_D2
67
SDIO_D3
64
SDIO_CLK
22
Ω
22
Ω
22
Ω
22
Ω
22
Ω
22
Ω
SD_D0
15
SD_D1
16
SD_D2
11
SD_D3
12
SD_CLK
14
SD_CMD
13
GND
PDn
9
RESETn
10
SLEEP_CLK
19
CFG
20
GND
47k
Wi-Fi
antenna
23
RESET_N
Application
Processor
Open
drain
output
20
PWR_ON
Open
drain
output
TP
TP
16
TXD
17
RXD
12
DCD
14
RTS
15
CTS
13
DTR
10
DSR
11
RI
TP
TP
TP
TP
TP
TP
TP
TP
TXD
RXD
DCD
RTS
CTS
DTR
DSR
RI
1.8 V DTE
GND
GND
USB 2.0 host
D-
D+
27
USB_D-
28
USB_D+
VBUS
4
VUSB_DET
TP
TP
GND
GND
0
Ω
0
Ω
0
Ω
0
Ω
0
Ω
0
Ω
0
Ω
V_INT
BCLK
LRCLK
Audio Codec
MAX9860
SDIN
SDOUT
SDA
SCL
52
I2S_CLK
50
I2S_WA
51
I2S_TXD
53
I2S_RXD
61
GPIO6
MCLK
IRQn
10k
10
µ
F
1
µ
F
100nF
VDD
SPK
OUTP
OUTN
MIC
MICBIAS
1
µ
F
2.2k
1
µ
F
1
µ
F
MICLN
MICLP
MICGND
2.2k
ESD ESD
V_INT
10nF
10nF
EMI
EMI
27pF
27pF
10nF
EMI
EMI
ESD ESD
27pF
27pF
10nF
47pF
SIM Card Holder
CCVCC (C1)
CCVPP (C6)
CCIO (C7)
CCCLK (C3)
CCRST (C2)
GND (C5)
47pF 47pF
100nF
59
VSIM
57
SIM_IO
56
SIM_CLK
58
SIM_RST
47pF
SW1
SW2
5
V_INT
60
GPIO5
470k
ESD ESD ESD ESD ESD ESD
1k
TP
V_INT
25
GPIO4
3V8
Network
Indicator
22
GPIO2
24
GPIO3
0
Ω
0
Ω
0
Ω
87
ANT2
75
ANT_DET
10k
Connector
27pF
ESD
Secondary
Cellular
Antenna
33pF
82nH
82nH
81
Connector
Primary
Cellular
Antenna
33pF
ANT1
4.7k
4.7k
Not supported by
TOBY-L201-02S
TOBY-L220-62S
Figure 75: Example schematic integrating TOBY-L2 module ’02’, ’03’ or ‘62‘ version in an application using all interfaces