question about IO status while power up for MAX II EPM1270

[Altera_Forum]

for MAX II EPM1270 

For the weak pull-up resistor during power up,IO will show a high voltage(3.3V).I want to make IO show a low voltage by adding a pull-down resistor.what is the appropriate resistor value for it? 5000ohm will be ok? Thank you.   上电时由于weak pull-up resistor ，IO输出很短的高电平。若通过加下拉电阻拉使之一直保持低，那需加多大的下拉电阻？

[Altera_Forum]

Please do not multipost your question. 

The datasheet should give you the lowest possible value for the weak pull-up in the Max II. When you add a pull down you create a resistor divider, and depending on the voltage you want to reach (<0.8V for a TTL signal, as an example) it will give you the highest possible value for the pull down.