Hello Bruno BERTHIER:
The PREV601 is an evaluation board. Maybe you mean the IC PRH601?
This chip integrates the HITAG Reader IC HTRC110. For this module you can find the information including datasheet in the product page link:
HITAG reader solution|NXP
I hope this helps. Let me know if I misunderstood your question.
Best regards,
Jorge Gonzalez
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