[Milkymist-devel] Pull-down resistors for POR

[Sébastien Bourdeauducq]

Hi,

* We should put a pull-down resistor on the reset pin of the video input chip 
as well (the example schematics includes external POR circuitry)
* We'd rather use 1K (instead of 10K) resistors. The pre-configuration FPGA 
pull-up circuitry supplies up to 0.5mA of current, which would fail to create 
a low logic level with a 10K resistor. With a 1K resistor, the voltage at 
power-up will be 0.5V in the worst case. Both the video input and the ethernet 
chips recognize voltages of up to 0.8V as a low level, so a 1K resistor will 
work.

Adam: I will change the resistor to 1K on the PCBs you are sending me, no 
worries.

Sébastien