Analog Devices ADRV9001 User Manual page 110

UG-1828
Bits Corresponding Enum
D8 ADI_ADRV9001_INIT_CAL_TX_PATH_DELAY
D9 ADI_ADRV9001_INIT_CAL_RX_HPADC_RC
D10 ADI_ADRV9001_INIT_CAL_RX_HPADC_FLASH
D11 ADI_ADRV9001_INIT_CAL_RX_HPADC_DAC
D12 ADI_ADRV9001_INIT_CAL_RX_DCC
D13 ADI_ADRV9001_INIT_CAL_RX_LPADC
D14 ADI_ADRV9001_INIT_CAL_RX_TIA_CUTOFF
D15 ADI_ADRV9001_INIT_CAL_RX_GROUP_DELAY
D16 ADI_ADRV9001_INIT_CAL_RX_QEC_TCAL
D17 ADI_ADRV9001_INIT_CAL_RX_QEC_FIC
D18 ADI_ADRV9001_INIT_CAL_RX_QEC_ILB_LO_DELAY
D19 ADI_ADRV9001_INIT_CAL_RX_RF_DC_OFFSET
D20 ADI_ADRV9001_INIT_CAL_RX_GAIN_PATH_DELAY
D21 ADI_ADRV9001_INIT_CAL_PLL
D22 ADI_ADRV9001_INIT_CAL_AUX_PLL
The ADRV9001 ARM proceeds through the calibrations in the required sequential order. The system initial calibrations are performed
first followed by Rx initial calibrations and then Tx initial calibrations. The Rx initial calibration order and the Tx initial calibration order
are shown in Table 43 and Table 44, respectively.
Calibration Description
Tx Path Delay This is used to estimate the delay between the Tx input
Initial Calibration and the Tx output.
Rx HP ADC RC This is used to determine how much the unit R and C vary
Initial Calibration from ideal and then tune the HP ADC's programmable Rs
and Cs to obtain their desired values. Without this
calibration, the HP ADC's noise performance will be
negatively impacted. The HP ADC could also become
unstable. It is not used when only LP ADC is used.
Rx HP ADC Flash This is used to optimize the HP ADC output noise by
Offset Initial correcting comparators offsets in the backend flash. It is
Calibration not used when only LP ADC is used.
Rx HP ADC DAC It corrects for element mismatch HP ADC current. It is not
Initial Calibration used when only LP ADC is used. This is disabled by default
– uncalibrated performance sufficient.
Rx HP ADC This corrects the 50% duty cycle for external LO when the
Stability Initial divisor is 2.
Calibration
Rx LP ADC Initial This is used to calibrate the LP ADC. The major purpose of
Calibration using the LP ADC instead of the HP ADC is to reduce
power consumption. It is not used when only HP ADC is
used.
Rx TIA Cutoff This is used to tune the 3dB cut-off frequency of the TIA
Initial Calibration filter.
Rx TIA Fine Initial This is used to compensate the mismatch in 3dB cutoff
frequency between I and Q path. It helps to correct
Calibration
quadrature error in analog domain, which simplifies the
correction in the digital domain.
Rx Tone Initial This performs an initial QEC calibration in wideband
Calibration systems for frequency dependent quadrature errors.
Rx Frequency This performs an initial QEC calibration for frequency
Independent independent errors for both narrowband and wideband
Error Initial systems.
Calibration
Rx ILB LO Delay This is used to adjust the analog delay between the
Initial Calibration inphase and quadrature LO components at the mixer on
the internal loopback path. This is not enabled currently.
Rx RFDC Offset This is used to mitigate the RFDC offset added due to LO
Initial Calibration self-mixing.
Rx Gain Path This is used to calculate the path delay between the Rx
Delay Initial analog and digital attenuation blocks. This delay is then
Calibration used to offset the onset of Rx analog and digital
attenuations relative to each other to compensate for the
path delay between these blocks. It is independent of gain
index and frequency region. The calibration needs only be
performed on a single channel.
PLL Initial This is used to perform VCO frequency calibration, VCO
Calibration real-time temperature/aging calibration and charge pump
calibration to make RF PLL ready for operation. It is only
used for very fast frequency hopping mode. This is not
enabled currently.
AUX PLL Initial This is used to perform VCO frequency calibration, VCO
Calibration real-time temperature/aging calibration and charge pump
calibration to make aux PLL ready for operation. This is
not enabled currently.
Rev. PrA | Page 110 of 253
Preliminary Technical Data