We are designing an expansion board for the QSB for demo purposes.
In the IMX53QSB schematics (rev. D), in the expansion header description, the DISP0_DCLK signal has a "1.8V" label.
However, it directly connects to the IMX53 IPU DI0_DISP_CLK (pin H4), which according to the datasheet (rev. 4), is on the NVCC_LCD power rail. This is 2.775V.
What is correct, 1.8V or 2.775V?
The same question goes for GPIO_0 (CLK0)?
Hi,
We also did expansion board design and the said signals are at 2V7 level.
Best Regards
Nitin Sonar
Hi, Leon
I think the DISP0_DCLK/GPIO_0 label on the connector is wrong.
DISP0_DCLK belongs to power rail: NVCC_LCD which in 53QSB is 2.775V.
GPIO_0 belongs to NVCC_GPIO. In 53QSB it's 3.3V.
Both of these two power rails can be set to other voltage level, such as 1.8V, depends on the interconnecting IO level.