I am planning an Overo based design and I want to use the PWM0 and PWM1
signal outputs on he 40-pin header. However, I am having trouble
determining the switching voltage levels from posted documentation.
The web page describing the 40-pin header states ...
* All logic levels are 1.8V.
* A to D converter lines run direct to the TPS65950 with a maximum 2.5V.
But the PWM0 and PWM1 signals also originate from the TPS65950 and in
some documentation they are listed as analog signals. The TPS65950 chip
operates at multiple voltages with some higher than 1.8V. Typically
externally intended I/O will be set to operate at one of the higher
voltage levels. The TPS65950 datasheet states that the I/O's VOH max is
RL, but there is no Overo documentation regarding how RL is set.
What is the VOH max for the Pvero's PWM0 and PWM1 pins?