Quote:
Originally Posted by The Lucas
From the looks of the digital side car, all PWM outs are connected to a chip labeled U2, so that should be the final stage of the PWM generation (or it could just be a buffer). What signals the FPGA and DIO modules send to drive that IC, I am not sure. |
U2 is a LV540A 3-state Buffer/Driver.
Data sheet can be found
here.
They are, most likely, using it as a buffer for the DIOs to protect them from whatever students tend to do to electronics
.
In other words ... it looks like FIRST will be using the DIOs to produce PWM equivelent outputs through a buffer circuit and that that buffer circuit is there to protect the DIO.