Table of Contents
Advertisement
The following figures show the reference design for LCM interface.
LCD_TE
LCD_RST
GPIO_XX
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 lines. It is recommended to add common-mode filter in series near the LCM
connector to reduce electromagnetic radiation interference.
It is recommended to read the LCM ID register through MIPI when compatible design with other display
screens is required. If the multiple LCMs use 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 GPIOs of the module to distinguish different screens by level detection. Note that the output
voltage of LCD_ID should not exceed the voltage range of the GPIOs.
You can design external backlight drive circuit for LCM according to actual requirement. The
corresponding reference design is shown in the figure below, in which PWM pin is used for backlight
brightness adjustment.
SC200K_Series_Hardware_Design
LCM _ LED+
LCM _LED-
1
2
1
2
1
2
1
2
1
2
EMI filter
Figure 21: Reference Circuit Design for LCM Interface
VDD28
VDDCAMIO
C1
C2
4.7 μF
100 nF
FL1
3
4
FL2
3
4
FL3
3
4
FL4
3
4
FL5
3
4
Smart Module Series
1
LEDA
2
NC
3
LEDK
4
NC
5
LPTE
6
RESET
7
LCD_ID
8
NC (SDA-TP)
9
NC (SCL-TP)
C4
C 3
10
NC (RST-TP)
1 μF
100 nF
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
56 / 105
Advertisement
Table of Contents
