UG-1828 Preliminary Technical Data
Rev. PrB | Page 170 of 277
The ADRV9001 performs the PFIR coefficients switch for all channels that have new coefficients prepared and waiting when the API
command adi_adrv9001_arm_Profile_Switch() is called. If ADRV9001 is in PRIMED state, the new coefficients will take effect on the
next transition to RF_ENABLED. If it is in RF_ENABLED, they take effect immediately.
An example python code for the RX PFIR coefficients switch is in below:
pfir_dmr_12p5k_coeff = [1,4,10,14,10,-8,-36,-56,-43,18,110,176,140,-36,-296,\
-477,-385,65,717,1164,945,-116,-1630,-2655,-2161,224,3612,5917,4823,-660,-8930,\
-15835,-16492,-8267,6681,21178,26054,15428,-8503,-34452,-46572,-33192,4645,50326,\
77802,65235,9575,-66663,-122526,-118715,-41686,81623,189288,211654,109809,-93600,\
-309489,-411032,-287232,101328,691337,1327974,1817574,2001178,1817574,1327974,\
691337,101328,-287232,-411032,-309489,-93600,109809,211654,189288,81623,-41686,\
-118715,-122526,-66663,9575,65235,77802,50326,4645,-33192,-46572,-34452,-8503,\
15428,26054,21178,6681,-8267,-16492,-15835,-8930,-660,4823,5917,3612,224,-2161,\
-2655,-1630,-116,945,1164,717,65,-385,-477,-296,-36,140,176,110,18,-43,-56,-36,\
-8,10,14,10,4,1,0]
pfir_dmr_12p5k = adi_adrv9001_PfirWbNbBuffer_t()
pfir_dmr_12p5k.numCoeff = 128
pfir_dmr_12p5k.symmetricSel = adi_adrv9001_PfirSymmetric_e.ADI_ADRV9001_PFIR_COEF_NON_SYMMETRIC
pfir_dmr_12p5k.tapsSel = adi_adrv9001_PfirNumTaps_e.ADI_ADRV9001_PFIR_128_TAPS # PFIR_128_TAPS
pfir_dmr_12p5k.gainSel = adi_adrv9001_PfirGain_e.ADI_ADRV9001_PFIR_GAIN_ZERO_DB # PFIR_GAIN_0DB
for i in range(pfir_dmr_12p5k.numCoeff):
pfir_dmr_12p5k.coefficients[i] = pfir_dmr_12p5k_coeff[i]
Adrv9001.arm.NextPfir_Set(1, pfir_fm_12p5k) # put in the right filter object
Adrv9001.arm.Profile_Switch()
NB Programmable FIR API Programming
Same with Rx PFIR, a profile predefined set of NB PFIR coefficients (customized NB PFIR coefficients will be supported in the later
software release) are automatically loaded during chip initialization, there is no need for baseband processor to call any PFIR coefficients
loading API function.
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