SN65DSI84-Q1:회로도 검증을 요청 드립니다.

Hi Park,

Could you please share the circuit diagram document if you wanted us to check it.

Could you tell us what the issue is currently? 

The SCL and SDA pins should have I2C pullup resistors, generally 4.7 kOhm resistors pulled up to 1.8 V. And the pin should be tied to host controller's I2C bus to program the device.

Could you explain what you meant by pins 16, 17 having no clock? Pin 16 is SDA And pin 17 is REFCLK which can either be connected to REFCLK source or pulled to ground with external resistor if unused. Please share the schematic for this.


To program the device you can use the DSI Tuner tool: SN65DSI83: DSI TUNER tool needed 

This app note has a guide for programming: https://www.ti.com/lit/an/slla332b/slla332b.pdf


Best regards,
Ikram

4페이지의 U12(SN65DSI84-Q1)과 CN5의 회로도 검증을 요청합니다.

1. 현재 CN5에 LCD 패널을 연결해도 LVDS 신호 출력이 없습니다.

2. CN12의 38, 39핀과 53,54핀은 1.25V High 상태를 유지하고 있습니다.

LCD_37IN_LVDS_51PIN_V1_20250729 (1).pdf

 빠른 회신을 기다리고 있습니다.

감사합니다.

LCD_37IN_LVDS_51PIN_V1_20250729 (1).pdf

Hi JungKyu,

Please program the registers to enable test pattern and check the outputs. The registers need to be configured based on the display resolution LVDS settings, DSI settings, etc. Could you share how the customer are currently programming this?

Ikram Haque said:

To program the device you can use the DSI Tuner tool: SN65DSI83: DSI TUNER tool needed 

This app note has a guide for programming: https://www.ti.com/lit/an/slla332b/slla332b.pdf

Since you mentioned there is no LVDS clock output, the display is blank currently? Are the customer sending DSI video and programming the device? Please check and share the register configuration.

Also, please follow the initialization sequence shared in the datasheet "8.4.2 Initialization Sequence".


Best regards,
Ikram