Arduino I2C to ZSSC3123

Hello!

I want to retrieve the value of C_Config.

My code:

Wire.begin();
Wire.beginTransmission(0x50);
Wire.write(0xA0);                         // Enter the command mode
Wire.endTransmission(); 
Wire.requestFrom(0x06, 3);           // Retrieve the value of C_Config
byte a = Wire.read();
byte b = Wire.read();
byte c = Wire.read();

But what I get is 255, not the default value.
What is the problem?

datasheet.octopart.com/ZSSC3123AA2-T-ZMDI-datasheet-10989346.pdf

Any help please?