PN5180 READ_DATA issue

[izmile]

Hi,

I am having a strange behaviour with my PN5180 device. The device received 3 bytes from the card. I read 2 bytes from the RX buffer using READ_DATA command. Now, I cannot access PN5180. The device is completely locked up. 

However, if I read all 3 bytes then device is working fine. Is there a requirement that the host should read all the received bytes in one go? I am searching the datasheet but could not locate anything in this regard. Greatly appreciate any help on this.

Thanks,

-Ismail

[Jorge_Gonzalez · Accepted solution]

Hello Mohamed,

Indeed, the whole received data must be read, then the host should decide what data to discard. Please see below from the PN5180 datasheet:

Regards!

Jorge Gonzalez

[izmile]

Thanks Jorge. 

It would have been nice to flush the unwanted received data bytes after reading the first few bytes. CLRC663, MFRC632 all had this feature.