CLRC 663 allows you to:
It outputs a modulated signal from SIGOUT and sends it to the card using a proprietary analog transmission circuit.
The card's response is binarized using a proprietary analog receiving circuit, and this binarized signal is input to SIGIN to demodulate the card's response.
If I do the same thing with PN 5190, what is the pin number that corresponds to SIGOUT or SIGIN?