As we all kown, fast attack mode is used to deal with TDD signal,suck as GSM.
I config the ad9361 using the recommended parameters, but when the GSM burst ends, the gain does not increase.
So, i connect ctrl output to watch the energy lost flag and agc state. Then i find out that,when GSM burst ends, the energy lost flag is low,and state is always in 5.
Why could this happen?
The recommended parameters is that: when energy is below 10db for 8 samples,then gain will be unlock.