Quectel Smart EVB G2 User Manual

Smart LTE Module Series
Smart EVB G2 User Guide
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4.3.2. Secondary LCM Interface
The following figure shows a reference circuit design for secondary LCM interface of the Smart EVB G2.
DSI1_CLK_P
LEDA
NC
LEDK
LPTE
NC (SDA-TP)
VIO18
NC (VTP-TP)
DSI1_LN3_P
LCD1_TE
LCD1_RST
DSI1_LN3_N
DSI1_LN2_P
DSI1_CLK_N
DSI1_LN2_N
RESET
LCD_ID
NC (SCL-TP)
NC (RST-TP)
NC (EINT-TP)
GND
VCC28
GND
MIPI_TDP3
MIPI_TDN3
GND
MIPI_TDP2
MIPI_TDN2
GND
MIPI_TDP1
MIPI_TDN1
GND
LDO17_2V85
LDO6_1V8
LCM1_LED+
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
MIPI_TDP0
MIPI_TDN0
GND
MIPI_TCP
MIPI_TCN
29
28
30
3
4
5 6
3
4
5 6
3
4
5 6
3
4
5 6
DSI1_LN1_N
DSI1_LN1_P
DSI1_LN0_N
DSI1_LN0_P
1
2
3
4
5 6
11
1
2
1
2
1
2
1
2
100nF4.7 uF
1uF
Module
LCM
FL1
FL2
FL3
FL4
FL5
EMI filter
C3C2C1
NC
GND
GND
GND
GND
PMU_MPP2
31
32
33
34
LCM1_LED-
J0801
Figure 18: Reference Circuit Design for Secondary LCM Interface
4.3.3. Backlight Driver for Secondary LCM Interface
The Smart EVB G2 uses a PWM dimming step-up LED driver for the WLED backlighting of secondary
LCM interface.
The following figure shows a reference circuit design for the backlight driver.
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Quectel Smart EVB G2 Specifications

General

Brand	Quectel
Model	Smart EVB G2
Category	Motherboard
Language	English