WIZ105SR TX output signal tri-state?

Question

Somewhere I got the idea that the TX output of the TCP-to-serial module is hi-z while TCP is not connected, and it only drives LO or HI while TCP is connected. This kind of tri-state operation could be useful in some applications. (If the tri-state feature is not used, a pulldown resistor is needed on the output.) Is the TX output of the WIZ105SR module tri-state, or is it always active?

jim · Answer

Dear samvjt I think your idea is cool. But there is a risk. I suggest WIZ550S2E module with the status pin of connection. [url]http://www.wiznet.co.kr/product-item/wiz550s2e/[/url] Thanks.