CLRC663 - Active Antenna Concept

lokeshjassal2004 — Thu, 27 Nov 2025 17:09:05 GMT

For validation of my digital block Analog Front End of CLRC663 is to be bypassed for that I want to use Active Antenna Concept as mentioned in "CLRC663
High performance multi-protocol NFC frontend CLRC663 and CLRC663 plus
Rev. 5.3 — 3 January 2024".

I am using CLEV663B and configured it as reader for ISO/IEC 14443B using NFC Cockpit. After sending REQB it expects a response from PICC. Bypassing the Analog RF, "Rcv.SigInSe = 11" indicates I can drive SIGIN pin over s3c generic.

Now, I want to know what is meant by s3c generic, and what is expected as an input to this pin. Baseband signal (@106KHz) or BPSK modulates sub-carrier signal. Also, do I just need to transmit characters/data bytes or add SOF and EOF. Does my input signal needs to be synchronized with RF of antenna.

Re: CLRC663 - Active Antenna Concept

jimmychan — Sat, 29 Nov 2025 07:14:07 GMT

We don't use the s3c generic. It is an internal signal of process unit.

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CLRC663 - Active Antenna Concept

Re: CLRC663 - Active Antenna Concept