Analog Devices ADRV9029 User Manual

Preliminary Technical
Data
Rev. PrA | Page 24 of 82
dpdMetric adi_adrv9025_DpdMetric_e
One of the seven DPD stability metrics described in the
previous section
comparator adi_adrv9025_DpdComparator_e
The user can select a greater than or less than
comparator for defining a fault condition. Eg: The user
can define a fault condition where Tx RMS power is
greater than a certain threshold and ORx RMS power is
lesser than a certain threshold.
threshold0 Int16 Defines a threshold for a lower severity level
threshold1 Int16 Defines a threshold for a higher severity level
persistentCount UInt16
Persistence count is defined with the expectation that
more aggressive recovery actions will be required in case
the fault conditions persist.
The currently available action list is shown in Table 7. The fault conditions defined in Table 6 can be associated with a recovery
action programmed through the API adi_adrv9025_DpdRecoveryActionSet().
Table 7 ADRV902x Recovery Action Bit-mask Definition
Action Index Description Action Word
recoveryAction_0 Abandon update bit 0
recoveryAction_1 Revert all LUTs to unity bit 1
recoveryAction_2 Reset DPD adaptation state (internal adaptation statistics, say) bit 2
recoveryAction_3 HW reset actuator bit 3
recoveryAction_4 Switch to the maxPower model bit 4
recoveryAction_5 Switch to some specific recovery model bit 5
The DPD fault conditions configured in the firmware on startup are listed in Table 8.
Table 8. Default Definition of Fault Condition Matrix
Metric Comparator Low Threshold High Threshold
Persistent
Count
Mean TU Power (Pre-DPD) Less Than -37 dBFS -46 dBFS 10
Peak TU Power (Pre-DPD) Less Than -26 dBFS -35 dBFS 10
Mean Tx Power (Post-DPD) Less Than -37 dBFS -46 dBFS 10
Peak Tx Power (Post-DPD) Less Than -26 dBFS -35 dBFS 10
Mean ORx power (Post-DPD) Less Than -34 dBFS -43 dBFS 10
Peak ORx power (Post-DPD) Less Than -23 dBFS -32 dBFS 10
Pre-DPD capture Tx to ORx EVM (Direct EVM) Greater Than 5% 15% 10
Post-DPD capture Tx to ORx EVM (Indirect EVM) Greater Than 8% 15% 10
Indirect Error Greater Than 3% 12% 10

Analog Devices ADRV9029 Specifications

General

Brand	Analog Devices
Model	ADRV9029
Category	Transceiver
Language	English