Hi.
Undergraduate Admissions into IIIT DMK is based on JEE Main Score and the JOSAA Counselling. There is no 'direct admission' as per the official website (https://www.iiitdm.ac.in/Admission/Undergraduate.php) .
To register for JEE Mains please refer to this website: https://jeemain.nta.nic.in/webinfo/public/home.aspx
However, the dates of JEE Main 2021 are yet not revealed. If they are announced then the website will be updated likewise.
Good Luck
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