Analog Devices ADRV9005 Reference Manual page 174

Reference Manual
TRANSMITTER/RECEIVER/OBSERVATION RECEIVER SIGNAL CHAIN CALIBRATIONS
Table 70. Tracking Calibration Mask Bit Assignments (Continued)
Bits Corresponding Enum
D12 ADI_ADRV9001_TRACKING_CAL_ORX_QEC_WBPOLY
D13 Reserved
D14 Reserved
D15 Reserved
D16 Reserved
D17 Reserved
D18 Reserved
D19 ADI_ADRV9001_TRACKING_CAL_RX_BBDC
D20 ADI_ADRV9001_TRACKING_CAL_RX_RFDC
D21 ADI_ADRV9001_TRACKING_CAL_RX_QEC_FIC
D22 ADI_ADRV9001_TRACKING_CAL_RX_GAIN_CONTROL_DETECTO
RS
D23 ADI_ADRV9001_TRACKING_CAL_RX_RSSI
External System Requirements for Tracking Calibrations
Different from initial calibrations, tracking calibrations are performed on-the-fly with real-time traffic data. Therefore, it is mostly transparent and
fully controlled by the internal microprocessor. The external system requirements are as follows:
Make sure the external paths are available when running some of the tracking calibrations on external loopback paths.
►
When using an external loopback path after a power amplifier (ELB2), choose a suitable attenuator between the power amplifier output and
►
the observation channel input to prevent the transmitter output data from saturating the observation channel input.
When an external DPD is employed in the system, it shares time with the other transmitter tracking calibrations to avoid conflicts.
►
For tracking calibrations, the TES enables or disables these calibrations, as shown in
rable transmitter tracking calibrations are digital predistortion (TX_DPD_CLGC), LO leakage (TX_LO_LEAKAGE), and QEC (TX_QEC). When
"Tx Direct FM/FSK" mode is selected in the DMR or AnalogFM profiles, TX_LO_LEAKAGE and TX_QEC calibrations are not applicable. These
options are disabled in TES. The configurable receiver tracking calibrations are gain control detectors (RX_GAIN_CONTROL_DETECTORS),
baseband DC offset (RX_BBDC), (second order) harmonic distortion (RX_HD2), frequency independent QEC (RX_QEC_FIC), and frequency
dependent QEC for WB (RX_QEC_WBPOLY).
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Calibration Description
Corrects ORx frequency dependent quadrature error for WB
ORx QEC
applications.
WB Tracking Cali-
bration
Mitigates the Rx DC offset at the baseband on-the-fly.
Rx BBDC
Tracking Calibra-
tion
Mitigates the Rx DC offset at the RF (analog) on-the-fly.
Rx RFDC
Tracking Calibra-
tion
Corrects Rx frequency independent quadrature error for both NB and
Rx QEC FIC
WB applications.
Tracking Calibra-
tion
Rx Gain Control
Enables/disables gain control detectors on-the-fly. By disabling it, AGC
Detectors
stops responding to changes in the input signal and instead holds its
Tracking
last gain index.
Calibration
Enables/disables Rx signal strength measurement on-the-fly.
Rx RSSI
Tracking Calibra-
tion
Figure 160. Note that in the current release, the configu-
ADRV9001
Rev. A | 174 of 377