UART0 receive problem

Hi All,

I need a help, basically I want to tap the I/O  line between a smart
card and smart card reader.

For this I am using JNUT board 1.3H, where I want to connect the UART0
Rx line to the above mentioned I/O line.

What is the extra circuitry I need to Tap this I/O line.

Is it sufficient to connect the I/O line from smart card via a pull up
resistor to the Rx pin of UART0? Or there is a level shifter is
required?

Smart card also works in the +5V,

Please help me I am confused in this.

Regards
Prasad



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