Other NXP ProductsのトピックRe: CLRC663 Rx pin

CLRC663 Rx pin

muratt — Thu, 26 Dec 2024 05:42:30 GMT

Hello,

Currently ı have a design which ı am using #MFRC522. Right now ı am updating this design for #CLRC663 plus. I have question about that:

Why there are two Tx pin İn both IC?

Why #MFRC522 has one Rx pin and#CLRC663 has two?

Re: CLRC663 Rx pin

muratt — Thu, 26 Dec 2024 08:16:35 GMT

And is there any specification about how can ı learn the reading distance?

Re: CLRC663 Rx pin

KaiLi — Thu, 26 Dec 2024 10:13:21 GMT

Hello @muratt

This is determined by the internal structure of the IC. CLRC663 adds a mixer to optimize the RX performance, is backward compatible with MFRC522, and has various performance improvements.

Re: CLRC663 Rx pin

KaiLi — Thu, 26 Dec 2024 10:17:38 GMT

Hello @muratt

Reading distance depends on the antenna design, so it's recommended that you can refer to AN11019

https://www.nxp.com/docs/en/application-note/AN11019.pdf

Re: CLRC663 Rx pin

muratt — Thu, 26 Dec 2024 11:45:20 GMT

Thanks for your answer. what is the reason of two tx and one tvss pins for antenna?