what are control pins in mfrc522

[mnfsoft]

you refer to your datasheet by the name "control pins" in section 8.1.1; I.e. this is a lazy written document with poor or no  revision I mean I do not see many chips like this plus what is the harm of mentioning their name; hence this datasheet is getting hard to understand each time I begin to read it and try to understand it!

[weidong_sun]

Hi,

 See below, please!

Using UART interface:  I2C PIN =0 && EA PIN=0

Using SPI interface : I2C PIN =0 && EA PIN=1

Using I2C-BUS interface: I2C PIN =1 && EA PIN=X

Have a nice day!

BR,

NXP TIC Weidong Sun