RF430CL331H: Data rate of 848kbps cannot be used

Part Number:RF430CL331H

Dear community,

I want to transmit some kb of data over nfc with the RF430CL331H dynamic tag. Therefore it would be great to communicate on 848kbps speed.

With the RF430CL330H I could reach a communication on 848kbps but with the RF430CL331H, that seems not to work.

I try to set this with the following code, but the NFC transceiver reports only 106kbps as possible data rate:

        rf430cl331_write_register(RF430CL331Handler, 0xFFE0, 0x004E);
        rf430cl331_write_register(RF430CL331Handler, 0xFFFE, 0x0080);
        rf430cl331_write_register(RF430CL331Handler, 0x2ABA, 0x00F7);
        rf430cl331_write_register(RF430CL331Handler, 0x27B8, 0x0000);
        rf430cl331_write_register(RF430CL331Handler, 0xFFE0, 0x0000);

Is there anything wrong with this code, or did I miss something?

Many thanks for your help!