[Gumstix-users] Verdex, I2C, GPIO, mA, V, limits

[Krzysztof Sakrejda-L. <krz...@gm...>]

Hi,

It's my understanding that the specific mA/V limits on the GPIO pins 
(say for Verdex GX motherboards/breakout board) are going to be based on 
the voltage the board is operating on.  The PXA270 specs list anything 
from 1.8 to 3.3 V as options, but I haven't been able to find any solid 
reference to what is actually implemented on the Verdex 
motherboard--just hints at 3V...

Full disclosure: I'm looking at getting data from a ADC (MAX1236/1237, 
maybe) that outputs serial data, probably using the I2C bus from the 
breakout-vx.  I believe the limits for I2C and GPIO are the same, but 
both are interesting to me in any case.

Thanks for any thoughts/help.

Krzysztof