0X035 = 0X01 (Pll Lock); 0X035 = 0X02 (Calibration Busy); 0X035 = 0X03 (Rx Gain Control) - Analog Devices AD9361 Reference Manual

AD9361 Reference Manual
Control Output 6 (Tx CP Cal Done)
When the AD9361 powers up into the sleep state, this signal
is low. It transitions high after a Tx charge pump calibration
completes. If this signal is already high, it will transition and
stay low during the CP cal and transition high after the
calibration completes.
Control Output 5 (Rx CP Cal Done)
Same as Tx CP Cal Done in Control Output 6 but applies to the
Rx charge pump calibration.
Control Output 4 (Rx BB Filter Tuning Done)
Normally high. This signal is low only when the Rx baseband
filter calibration runs.
Control Output 3 (Tx BB Filter Tuning Done)
Normally high. This signal is low only when the Tx baseband
filter calibration runs.
Control Output 2 (Gain Step Cal Busy)
Normally low. This signal is high only when the gain step
calibration runs.
Control Output 1 (Rx Synth VCO Cal Busy)
Normally low. This signal is high only when the Rx RF VCO
calibration runs.
Control Output 0 (Tx Synth VCO Cal Busy)
Normally low. This signal is high only when the Rx RF VCO
calibration runs.

0x035 = 0x01 (PLL LOCK)

Control Output 7 (Tx RF PLL Lock)
This signal reflects the state of the Tx RFPLL lock detect circuit.
If the lock detect mode is continuous, then this control output
signal will be high when the RFPLL is locked and low otherwise
(including when a calibration runs). If the lock detect mode is
run once, then this bit will indicate the status of the lock detect
circuit every time the frequency integer word is written (causing
a VCO cal to occur) but after that occurs, the lock detect circuit
will stop monitoring the state of the RFPLL.
Control Output 6 (Rx RF PLL Lock)
Same as Tx RF PLL Lock in Control Output 7 but applies to the
Rx RFPLL.
Control Output 5 (BBPLL Lock)
This signal is high when the BBPLL is locked. Otherwise, this
signal is low.
Control Output 4 Through Control Output 0
Always low.

0x035 = 0x02 (CALIBRATION BUSY)

Control Output 7 (BB DC Cal Busy)
Normally low. This signal is high only when the baseband DC
calibration runs.
Control Output 6 (RF DC Cal Busy)
Normally low. This signal is high only when the RF DC
calibration runs.
Control Output 5 (CH1 Rx Quad Cal Busy)
Normally low. This signal is high only when the Rx1 quadrature
calibration runs.
Control Output 4 (CH1 Tx Quad Cal Busy)
Normally low. This signal is high only when the Tx1 quadrature
calibration runs.
Control Output 3 (CH2 Rx Quad Cal Busy)
Normally low. This signal is high only when the Rx2 quadrature
calibration runs.
Control Output 2 (CH2 Tx Quad Cal Busy)
Normally low. This signal is high only when the Tx2 quadrature
calibration runs.
Control Output 1 (Gain Step Cal Busy)
Normally low. This signal is high only when the gain step
calibration runs.
Control Output 0 (Tx Mon Cal Busy)
Normally low. This signal is high only when the Tx monitor
calibration runs.

0x035 = 0x03 (Rx GAIN CONTROL)

Control Output 7 (CH1 ADC Low Power)
The low power signal is used in the fast AGC and the MGC
modes. This signal will be high if a low power condition exists
in the AD9361.
Control Output 6 (CH1 Lg LMT Ovrg)
This signal transitions high if a large LMT overload occurs. The
signal will stay high until the gain changes. After a gain change,
the signal transitions low even if the input signal exceeds the
threshold because the gain control holds the LMT detect in
reset until the Peak Wait Time counter expires. If an overload
still occurs, this control output will again transition high.
Control Output 5 (CH1 Lg ADC Ovrg)
This signal transitions high if a large ADC overload occurs. The
signal will stay high until the gain changes. After a gain change,
the signal transitions low even if the ADC overload still occurs
because the gain control holds the ADC detect in reset until the
Peak Wait Time counter expires. If an overload still occurs, this
control output will again transition high.
Rev. A | Page 75 of 128
UG-570