Can't read i2c address PN7150 NFC

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Can't read i2c address PN7150 NFC

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khuonglt
Contributor I

Dear supporter

I can't read i2c address of PN7150 NFC even i have enable ven pin. 

May I ask the reason is I am not using 27.12 MHz quartz oscillator ?

Thank you so much . 

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Kan_Li
NXP TechSupport
NXP TechSupport

Hi @khuonglt ,

 

The PN7150 is flexible in terms of clock sources. It can be either:
 a 27.12MHz quartz
 or a clean clock signal available on the platform on which PN7150 is connected. A PLL inside PN7150 will convert this input clock signal into an internal 27.12MHz used to generate the RF carrier. The input clock frequency has to be one of the predefined set of input frequencies: 13MHz, 19.2MHz, 24MHz, 26MHz, 38.4MHz and 52MHz.


Please refer to UM10936 for more details.

 

Hope that helps,

 

Have a great day,
Kan


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