sn65lvds93a的问题

首先先检查下引脚焊接情况，其次检查下硬件电路，电源电压是否正常，输入时钟是多少频率的？输出data有无信号？

数据芯片输出电平也是没有变化的  输入时钟是40MHz

那检查下上电时序，建议按照datasheet中的时序上电，保证PLL  lock：

Power-up sequence (SN65LVDS93A SHTDN input initially low):
1. Ramp up LCD power (maybe 0.5 ms to 10 ms) but keep backlight turned off.
2. Wait for additional 0-200ms to ensure display noise won’t occur.
3. Enable video source output; start sending black video data.
4. Toggle LVDS83B shutdown to SHTDN = VIH.
5. Send >1 ms of black video data; this allows the LVDS83B to be phase locked, and the display to show black
data first.
6. Start sending true image data.

7. Enable backlight

有没有时序简单一点得芯片 这个太烦了。。