TLE987x CSA GAIN Setting

Hi

Now I testing CSA(Current Sense Amplifier) peripheral.

as I know, their has gain setting and it is 4 levels.

but I`m not sure this setting level really applied it because current sensing value always same even changed this gain factor.

and in User_Manual, it has 4 level for gain, but in KEIL Complier has 15 level for it.(In debugging and watching this SFR)

so, what is the correct it?

Is there errata for TLE987X?

Thanks.