Hi,
i am using the BT816 chip in my design and i am struggeling a bit. I supply the BT816 chip with 3.3V for VCCA, VCCIO1, VCCIO2 and VCCIO3. VOUT1V2 is on 1.2V as forseen.
Now my issue:
On the RGB lines, where i can see active pulsing signals (BACKLIGHT, DE, VSYNC, HSYNC, DISP, PCLK), i only measure approx 0.8V-1V. I connected those lines via 33Ohms in serial to a ST7701S chip. It seems that this signal level is too low for this chip which is also on 3.3V.
So my question is: Is this signal level normal ? I tried to force the signal strenth via register to higher amps without success.
What can i do here?
Thank you a lot
Torsten