i.MX 8M Starter Kit LCD add-on Board Interface Print

The Emcraft i.MX 8M Starter Kit provides an LCD add-on board using a 5.5" 1920x1080 MIPI-DSI LCD panel with capacitive touch controller. The LCD panel has the following part number: Frida FRD550L2501.

The LCD add-on board interfaces to the IMX8M-SOM-BSB development baseboard using the following board-to-board connectors:

  • IMX8M-SOM-BSB development board: SAMTEC QSH-030-01-F-D-A-K-TR
  • LCD add-on board: SAMTEC QTH-030-02-F-D-A-K-TR.

The board-to-board connectors have the following pin-out of the signals:

Pin No. Signal Name Description
1 GND Grounding
3 DSI_CK_P MIPI/DSI Differential Clock
5 DSI_CK_N MIPI/DSI Differential Clock
7 GND Grounding
9 DSI_D0_P MIPI/DSI Differential Pair for Lane 0
11 DSI_D0_N MIPI/DSI Differential Pair for Lane 0
13 GND Grounding
15 DSI_D1_P MIPI/DSI Differential Pair for Lane 1
17 DSI_D1_N MIPI/DSI Differential Pair for Lane 1
19 GND Grounding
21 5V 5V for backlight driver
23 5V 5V for backlight driver
25 NC Not Connected
27 GND Grounding
29 GND Grounding
31 NC Not Connected
33 NC Not Connected
35 SCLK Audio Clock
37 LRCLK Audio Left/Right Clock
39 I2S S/PDIF or I2S Audio Data
41 NC Not Connected
43 NC Not Connected
45 CEC_CLK CEC Clock
49 DSI_TE DSI LCD Tearing Effect
51 NC Not Connected
53 LCD_BL LCD Backlight PWM
55 NC Not Connected
59 NC Not Connected
2 NC Not Connected
4 LCD_INT LCD Touchscreen Interrupt
6 GND Grounding
8 DSI_D2_P MIPI/DSI Differential Pair for Lane 2
10 DSI_D2_N MIPI/DSI Differential Pair for Lane 2
12 GND Grounding
14 DSI_D3_P MIPI/DSI Differential Pair for Lane 3
16 DSI_D3_N MIPI/DSI Differential Pair for Lane 3
18 GND Grounding
20 NC Not Connected
22 NC Not Connected
24 NC Not Connected
26 NC Not Connected
28 NC Not Connected
30 NC Not Connected
32 NC Not Connected
34 NC Not Connected
36 3V3 3.3V for LCD purposes
38 NC Not Connected
40 LCD_SDA LCD Touchscreen I2C data
42 NC Not Connected
44 LCD_SCL LCD Touchscreen I2C clock
46 NC Not Connected
48 NC Not Connected
50 NC Not Connected
52 NC Not Connected
54 NC Not Connected
56 NC Not Connected
58 NC Not Connected
60 1V8 1.8V for LCD purposes
61 GND Grounding
62 GND Grounding
63 GND Grounding
64 GND Grounding

To facilitate secure connection of an LCD add-on board to the IMX8M-SOM-BSB development baseboard, mounting holes are provided on the IMX8M-SOM-BSB board. Refer to the following picture for details:

IMX8M-SOM-BSB: mounting holes

The following files provide detailed mechanical specifications of the LCD Add-on board:

Additional LCD add-on boards may be developed to allow use of alternative LCD panels with the Emcraft i.MX 8M Starter Kit. Any LCD add-on board developed for the Emcraft i.MX 8M Starter Kit must be compliant with the above electrical and mechanical specifications.

If necessary, an LCD add-on board may provide conversion from the MIPI-DSI format driven by the i.MX 8M to the display format of the target LCD. The following table provides suggestions on possible interface devices that may be used to convert from MIPI-DSI to various display formats:

Target Format Conversion Part Number
HDMI Analog Devices ADV7533
LVDS Texas Instruments SN65DSI84
eDP Texas Instruments SN65DSI86