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AD9915 unable write 

Question asked by 111111 on Nov 13, 2017
Latest reply on Nov 20, 2017 by 111111

Hello, my question is: using SPI serial write CFR1, CFR2, CFR3 CFR4 ETC, unable to write, IO -- UPDATA, not working.But 0X0B, 0X0C, 0X0D can be written, without IO - UPDATA can also be written, CS, RESET, and other pin are normal.

When readout, CFR1, CFR2, CFR3 CFR4 are data after reset.0X0B, 0X0E, 0X0D reads the value consistent with the write value.