DRV10983: Output of DRV10983

Part Number:DRV10983

Hello,

        I interface external microcontroller with  DRV10983  via I2C. Note : this PCB contains only 8 bit microcontroller and DRV10983. DRV10983's output are connected with CRO. I runs a code for it via I2C. First I set Si Data Bit to 1. In second step i write each register 0x20 to 0x2B. In third step i enter prog key. In fourth step i set eewrite to 1 then provide delay to allow eeWrite to finish. In fifth step i set eeRefresh Bit. In sixth step I read all 12 registers back to back to verify that what i previously write is correct or not.

Yes the reading 12 registers are same as the 12 registers which i write. But when i saw signal on CRO, signals are unsual or unpredictable, No phase shifted signal, no perfect duty, even two other V & W signals have no perfect frequency and U signal has 25KHz

I Know these registers are motor parameters. But i took these value from your one example as 

#define REG_20 0x39
#define REG_21 0x1E
#define REG_22 0x3A
#define REG_23 0x08
#define REG_24 0x50
#define REG_25 0xDA
#define REG_26 0x8B
#define REG_27 0x10
#define REG_28 0x27
#define REG_29 0x37
#define REG_2A 0x04
#define REG_2B 0x0C

So please help me how i get perfect output

Regards,

Shariq Hussain