PCIe-input/output voltage

[JennieLiu]

Hi all experts

I am using the PCIe to generate some digital bits as an input for my chip. In the data sheet, there are recommended operation conditions:

It's noticed that when PCIe is used to generate input digital signal, the output high current (IOH) and low current (IOL) are listed, no output operation voltage. how can i know this  can drive my chip which has a digital vdd of 1.8V, without damaging it? 

2. When PCIe is used to receive digital signal from my chip, the min input high voltage is 2.2V. While my device's VDD is only 1.8V. Does this mean that the PCIe is unable to serve as a receiver for my chip? Becasue, for example, when my device outputs an high voltage (1.8V) which is not enought to drive the device in PCIe to high voltage. Then the PCIe still shows "0" as a result. But this is wrong. 

[crossrulz]

Your chip is not TTL compatible, while the DIO card is.  Therefore you will have issues with a direct connection.  If you do a search on Digi-Key, you should be able to find some converter chips that can act as a "translator" between the two.

[JennieLiu]

Thanks a lot. I have to buy some "translators" if this is the case.