Telit Wireless Solutions LE910C1-NA, Hw User Manual, Page: 19 / 22

1VV0301517 - Audio Codec Extension Card - HW User Guide
Schematics
Rev. 2 Page 19 of 22 2019-12-04
5. Schematics
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Please note that the main relevant schematic pages out of the attached PDF, are page 1 & 2 only.
The remaining pages (page 3 to page 5) are used as optional components assembled only on specific
hardware versions used internally for the validation of the module.
Parts which are labelled as “DNP” in the schematic are not assembled.
Figure 5 Schematic page 1
C116
470nF
0402
10V
DNP
TGPIO_27_GPS_TXD {p.4}
ADC_IN2
R119 330
0402 5%
WIFI_SDCLK {p.3}
3.3V
TGPIO_11
TGPIO_5
U103
SN74AVC4T245DR
VCCA
1
1DIR
2
2DIR
3
1A1
4
1A2
5
2A1
6
2A2
7
GND_8
8
GND_9
9
2B2
10
2B1
11
1B2
12
1B1
13
2OE
14
1OE
15
VCCB
16
U107
SN74AVC1T45DBVR
DNP
VCCA
1
GND
2
A
3
VCCB
6
DIR
5
B
4
TGPIO_7
5V_PA
J110
HDR_1X2_TH
1 2
I2C_SCL
C115
470nF
0402
10V
DNP
VBAT_AUX
TGPIO_9
3.3V
C112
470nF
0402
10V
R103
10K 0402
5%
DNP
LS_1.8V
U104
SN74AVC4T245DR
VCCA
1
1DIR
2
2DIR
3
1A1
4
1A2
5
2A1
6
2A2
7
GND_8
8
GND_9
9
2B2
10
2B1
11
1B2
12
1B1
13
2OE
14
1OE
15
VCCB
16
TGPIO_5 {p.4}
WCI_TX_HOST {p.3}
TGPIO_3
R112 10K
0402 5%
DNP
R125
0
0402
ADC_IN1
J112
HDR_1X2_TH
DNP
1 2
U105
SN74AVC1T45DBVR
DNP
VCCA
1
GND
2
A
3
VCCB
6
DIR
5
B
4
DVI_REF_CLK {p.2}
100
Mil
SH101
R114 330
0402 5%
J106
HDR_1X2_TH
DNP
1
2
1.8V
C102
10uF
0402
6.3V
TGPIO_6 {p.3,4}
SPI_CS {p.1,3,4}
I2C_SDA_CODEC {p.2}
SPI_CS
J102
HDR_1X2_TH
1 2
1.8V
1V8_OUT
DVI_TX {p.2,3}
I2C_SCL {p.4}
R115 330
0402 5%
WIFI_REF_CLK
TP112
1.8V
WIFI_SD0 {p.3}
ADC_IN2
U106
SN74AVC1T45DBVR
DNP
VCCA
1
GND
2
A
3
VCCB
6
DIR
5
B
4
TGPIO_3
C108
470nF
0402
10V
SPI_MOSI {p.1,3,4}
J103
HDR_2X10_TH
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
SPI_MOSI {p.1,3,4}
TGPIO_3
WIFI_SD4 {p.3}
J109
HDR_1X2_TH
1 2
1.8V
WIFI_SD2 {p.3}
R111 15K
0402 5%
DNP
TGPIO_10
WCI_RX_HOST {p.3}
LED_3.3V
DECOUPLING
C104
10uF
0402
6.3V
3.3V
R109
5.6K
0402
5%
DNP
TGPIO_5
SPI_MOSI
1.8V
TGPIO_12
TGPIO_2
R102 0
0402 DNP
TGPIO_9
I2C_SCL_CODEC {p.2}
I2C_SCL_AUX {p.4}
1.8V
WIFI_SD6 {p.3}
R123 330
0402 5%
C111
470nF
0402
10V
I2C_SDA {p.4}
TGPIO_8
C114
470nF
0402
10V
DNP
TGPIO_2
J115
HDR_1X3_TH
DNP
1
2
3
TGPIO_8
TGPIO_7
TGPIO_9
LS_1.8V
J114
HDR_1X3_TH
DNP
1
2
3
TGPIO_5
D100
YELLOW
TGPIO_4
EXTENSION CONN
C105
470nF
0402
10V
1.8V
C117
470nF
0402
10V
DNP
TGPIO_1
I2C_SDA_AUX {p.4}
D101
YELLOW
R120 330
0402 5%
WIFI_SD5 {p.3}
L100
47nH
0402 5%
210mA
DNP
1.8V
TP109
R104 0
0402 DNP
D110
YELLOW
DVI_CLK {p.2,3}
I2C CONF
100
Mil
SH102
R121 330
0402 5%
3.3V_TGPIO_10
WIFI_SD7 {p.3}
R106
10K 0402
5%
DNP
3.3V_SPI_CS
ADC_IN3
SPI_MISO
D108
YELLOW
1V8_OUT
SPI_CLK {p.1,3,4}
TGPIO_1
C103
470nF
0402
10V
R113 15K
0402 5%
DNP
TGPIO_4
3.3V_SPI_CS
TGPIO_2
1.8V
TGPIO_1
U108
SN74AVC1T45DBVR
DNP
VCCA
1
GND
2
A
3
VCCB
6
DIR
5
B
4
D109
YELLOW
J111
HDR_1X2_TH
1 2
D111
YELLOW
1.8V
SPI_CLK {p.1,3,4}
TGPIO_8
3.3V_SPI_MOSI
C101
470nF
0402
10V
TGPIO_30_GPS_CTS {p.4}
J100
SHF-105-01-L-D-SM-K
DNP
1 2
3 4
6 5
7 8
9 10
DVI_RX {p.2,3}
TGPIO_3
TGPIO_10
TGPIO_7
LED_3.3V
J113
HDR_1X3_TH
DNP
1
2
3
C109
470nF
0402
10V
R116 330
0402 5%
J107
HDR_1X2_TH
1 2
1.8V
R108 0
DNP
Drawing Title:
Size PCB Number Rev
Date: Sheet of
Page Title:
Designer:
Project:
Project Number:
CS1784B-B B
LE920A4 WIFI/BT AOB
A3
Sunday , January 14, 2018
Ext Connector & SPI NOR
1 5
DROR G.
490 LE920A4
<Variant Name>
SPI_FLASH
R105 0
0402 DNP
U101
W25Q40EWSNIG
DNP
CS
1
DO
2
WP
3
GND
4
VCC
8
HOLD
7
CLK
6
DI
5
R117 330
0402 5%
D104
YELLOW
JM101
SEAM-20-01-L-06-2-RA-GP-K
120
120
119
119
118
118
117
117
116
116
115
115
114
114
113
113
112
112
111
111
110
110
109
109
108
108
107
107
106
106
105
105
104
104
103
103
102
102
101
101
100
100
99
99
98
98
97
97
96
96
95
95
94
94
93
93
92
92
91
91
90
90
89
89
88
88
87
87
86
86
85
85
84
84
83
83
82
82
81
81
80
80
79
79
78
78
77
77
76
76
75
75
74
74
73
73
72
72
71
71
70
70
69
69
68
68
67
67
66
66
65
65
64
64
63
63
62
62
61
61
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
59
59
60
60
G3
G3
G4
G4
G1
G1
G2
G2
TGPIO_6
TGPIO_10
R122 330
0402 5%
TGPIO_6
C106
10uF
0402
6.3V
1.8V
Antenna
Detection
TGPIO_22 {p.3}
TGPIO_3 {p.2,4}
R124 330
0402 5%
TGPIO_29_GPS_RTS {p.4}
J105
HDR_2X10_TH
DNP
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
D105
YELLOW
I2C_SDA
D106
YELLOW
WIFI_SD3 {p.3}
VBAT_AUX
3.3V_SPI_CLK
LED_3.3V
TGPIO_2
C113
470nF
0402
10V
TGPIO_8
SPI_CLK
3.3V_SPI_CLK
WIFI_SDRST {p.3}
3.3V
CP_32K_OUT {p.3,4}
D107
YELLOW
3.3V_SPI_MOSI
R107 0
DNP
C107
470nF
0402
10V
DNP
TGPIO_21
R127 330
0402 5%
LED_3.3V
DVI_CS {p.2,3}
TP104
100
Mil
SH111
TP101
TGPIO_10
J108
HDR_1X2_TH
1 2
3.3V_SPI_MISO
J104
HDR_2X10_TH
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
TGPIO_28_GPS_RXD {p.4}
ADC_IN3
SPI_MISO {p.1,3,4}
3.3V_SPI_MISO
ADC_IN1
R126
0
0402
SPI_CS {p.1,3,4}
D102
YELLOW
TGPIO_1
TGPIO_2
J101
HDR_1X2_TH
1 2
TGPIO_4
TP114
1.8V
TGPIO_7
TGPIO_9
C110
470nF
0402
10V
TGPIO_20
D103
YELLOW
3.3V_TGPIO_5 {p.4}
R118 330
0402 5%
WIFI_SDCMD {p.3}
WIFI_SD1 {p.3}
R110 15K
0402 5%
DNP
TGPIO_6
TGPIO_4
SPI_MISO {p.1,3,4}
TGPIO_1
R101 0
0402 DNP
U102
SN74AVC4T245DR
VCCA
1
1DIR
2
2DIR
3
1A1
4
1A2
5
2A1
6
2A2
7
GND_8
8
GND_9
9
2B2
10
2B1
11
1B2
12
1B1
13
2OE
14
1OE
15
VCCB
16