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The following figures show the reference design for LCM interface.
VPH_PWR
GPIO_09B
LCD_TE
LCD_ RST
DSI_LN3_P
DSI_LN3_N
DSI_LN2_P
DSI_LN2_N
DSI_LN1_P
DSI_LN1_N
DSI_LN0_P
DSI_LN0_N
DSI_CLK_P
DSI_CLK_N
Module
MIPI are high speed signal lines. It is recommended to add common-mode filters in series near the LCM
connector to improve protection against electromagnetic radiation interference.
It is recommended to read the LCM ID register through MIPI when compatible design with other displays
is required. If several LCMs share the same IC, it is recommended that LCM module factory should burn
an OTP register to distinguish different screens. You can also connect the LCD_ID pin of LCM to the
ADC pin of the module, but please note that the output voltage of LCD_ID should not exceed the voltage
range of the ADC pin.
SC690A_Series_Hardware_Design
IN
EN
C1
R1
4.7 μ F
10 K
LCD_BL_A
LCD_BL_K1
LCD_BL_K2
ADC
1
2
1
2
1
2
1
2
1
2
GND
Figure 17: Reference Circuit Design for LCM Interface
U1
OUT
BP/FB
C3
C2
1 μ F
100 nF
GND
LCD_VDD_2V8
LDO9_1V8
C1
C2
100 nF 4.7 μ F
FL1
3
4
FL2
3
4
FL3
3
4
FL4
3
4
FL5
3
4
EMI filter
Smart Module Series
B1
LCD_VDD_2V8
1
LEDA
2
NC
3
LEDK
4
NC
5
LPTE
6
RESET
7
LCD_ID
8
NC (SDA-TP)
9
NC (SCL-TP)
C3
10
NC (RST-TP)
11
1 μ F
NC (EINT-TP)
12
GND
13
VIO18
14
VCC28
15
NC (VTP-TP)
16
GND
17
MIPI_TDP3
18
MIPI_TDN3
19
GND
20
MIPI_TDP2
21
MIPI_TDN2
22
GND
23
MIPI_TDP1
24
MIPI_TDN1
25
GND
26
MIPI_TDP0
27
MIPI_TDN0
28
GND
29
MIPI_TCP
30
MIPI_TCN
31
GND
32
GND
33
GND
34
GND
LCM
58 / 105
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