Sure, we read back the value which was written into 0x073 and 0x074. We only used TX1A, and TX2A was connected to 1V3 told by datasheet, then we tried controlling 0x075 and 0x076, it was no use.
The picture below is no attenuation after 0x073 & 0x074 setting 0.
The picture below has almost no attenuation after 0x073 setting 6d.
