how to change clrc663's eeprom ?

[carnot]

hello ,I check clrc663's datasheet in 8.8.2 part( The CLRC663 is able to provide a clock with configurable frequency at CLKOUT from 1 MHz to 24 MHz
(PLL_Ctrl and PLL_DIV). There it can serve as a clock source to a microcontroller which avoids the need of
a second crystal oscillator in the reader system. Clock source for the IntegerN-PLL is the 27.12 MHz crystal
oscillator ).

I want to use clkout of Clrc663 for MCU's clkin in reader system,how to change clrc663's eeprom to achieve the function？

[EduardoZamora]

Hello @carnot

Hope you are doing well.

Please, consult the CLRC663 Data Sheet, Section 9.13.3 PLL_Ctrl Register; this register implements the control register for the IntegerN PLL. Also, Section 9.13.4 PLLDiv_Out details the frequency divider.

You could try to configure your device by using the NFC Cockpit. More information on its usage can be found in the NXP NFC Cockpit User Guide.

Regards,
Eduardo.