Touch Panel Interface; Camera Interface - Sunsea AIoT SIMCom SIM5800 Hardware Design

Module
MIPI_DSI_CLKN
MIPI_DSI_CLKP
Note: MIPI is a high-speed signal line. In the PCB routing stage, please follow the impedance and length
requirements strictly. For detailed routing introduction, please refer to the chapter 5.2.4 MIPI

4.10 Touch panel interface

The module provides a set of I2C interfaces that can be used to connect capacitive touch panel and provide the
required power supply and interrupt pin. The default interface pin of capacitive touch panel software as follows:
Table 10: Touch panel interface pin definitions1
Name
CTP_I2C_SDA
CTP_I2C_SCL
CTP_EINT
CTP_RST
Note : I2C requires external pull-up to VIO18_PMU, pull-up resistor 4.7Kohm.

4.11 Camera interface

SIM5800 supports two cameras:
2-lane MIPI_CSI primary camera up to 5MP resolution, Each group up to 1Gbps.
1-lane MIPI_CSI secondary camera up to 2MP resolution.
Table 11: Camera interface pin definitions
Pin Name
CAM0_MCLK
CAM0_RST
CAM0_PWDN
SIM5800_Hardware Design_V1.01
Smart Machine Smart Decision
VBAT
PWM
VIO28_PMU
VIO18_PMU
LCD_RST
LCD_TE
MIPI_DSI_L1N
MIPI_DSI_L1P
MIPI_DSI_L0N
MIPI_DSI_L0P
Figure 24: LCD reference circuit
Pin
48
47
30
31
Pin
74
79
80
LED+
WLED
driver
LED-
1uF 1uF
I/O Description
I/O
Touch screen I2C data
O Touch screen I2C clock
I Touch screen interrupt
O Touch screen reset
I/O
O Primary camera clock
O Primary camera reset
O Primary camera power down
33
LCM
1 GND
2 LED+
3 LED+
4 LED-
5 LED-
6 LCD_ID
7 VCC(2.8V)
8 GND
9 GND
10 VCC_IO
11 RESET
12 TE
13 NC
14 NC
15 GND
16 DSI_D1-
17 DSI_D1+
18 GND
19 DSI_CLK-
20 DSI_CLK+
21 GND
22 DSI_D0-
23 DSI_D0+
24 GND
25 GND
Description
2018-10-08