Hi Henry,
Thanks for that. As it happens I was also wondering why LVCMOS15 outputs (as
in the ucf file) managed to be 3V -- should have put two and two together I
guess.
Thanks
Jack
On 28 August 2010 17:40, Henry Chen hche...@ssl.berkeley.edu wrote:
Hi Jack,
The GPIOs on the ROACH are spread across different I/O banks, so
they are all at different voltages. To make them all a uniform 3.3V,
they go through unidirectional level translators; the gpiox_oe_n
signals control the drive directions of these translators.
Cheers,
Henry
On 8/27/2010 5:50 PM, Jack Hickish wrote:
Hi all,
I've been playing around with the GPIO on a ROACH, and just to ease my
curiosity, can anyone tell me what the pins that are driven by the
gpiox_oe_n blocks actually *do*?
Anyone with an answer will surely save me many sleepless nights of idle
wondering...
Cheers,
Jack
