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The following figure shows a reference design for LCM interface.
LCD_TE
LCD_ RST
ADC
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
_ CLK_N
DSI
GND
Module
MIPI are high speed signal traces. 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 the 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 note that the output voltage of LCD_ID should not exceed the voltage range of
the ADC pin.
You can design external backlight driver circuit for LCM according to actual requirement. The reference
design is shown in the figure below, in which PWM1 is used for backlight brightness adjustment.
SG560D_Series_Hardware_Design
LDO13C_2V8
LCM _ LED+
LCM _LED-
N M _0R
1
2
1
2
1
2
1
2
1
2
EMI filter
Figure 20: Reference Circuit for LCM Interface
LDO12C_1V8
LDO17B_1V8
R 2
N M _0R
R 1
C1
C2
1 μF
100 nF
FL1
3
4
FL2
3
4
FL3
3
4
FL4
3
4
FL5
3
4
Smart Module Series
1
LEDA
0R
2
NC
3
LEDK
4
NC
5
LPTE
6
RESET
7
LCD_ID
8
NC (SDA-TP)
9
NC (SCL-TP)
C 3
10
NC (RST-TP)
1 μF
11
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
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