tda18211hd NXP Semiconductors, tda18211hd Datasheet - Page 36

• Manufacturer Part Number: tda18211hd
• Description: Dvb-t Silicon Tuner Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA18211HD_5
Product data sheet
Fig 16. Flowchart TDA18211RFtrackingFiltersCorrection
RF_CAL_DC_OVER_DT_map
freq_input
dCoverdT
TMVALUE_CURRENT
TMVALUE_RFCAL
Capprox
RFCAL_TCOMP
RF_CAL_map
RF_BAND_map
freq_input
MS
RF_A2
RF2
RF_B2
Cprog_table
freq_input
Capprox =
RF_A2
RF_B2 + Cprog_table
Action
Power up TDA18211
Read die current temperature
Call TDA18211ThermometerRead
Frequency dependant parameters update
Find RFC_CPROG = f
Find RF1, RF2, RF3, RF_A1, RF_A2, RF_B1, RF_B2 = f
in RF_BAND_map(MS)
Find dCoverdT = f
Calculate temperature compensation
RFCAL_TCOMP = dCoverdT
Calculate final Cprog
Cprog = Capprox + RFCAL_TCOMP
(freq_input
Capprox = 0
Capprox < 0
RF2) +
Start TDA18211RFTrackingFiltersCorrection
no
End TDA18211RFTrackingFiltersCorrection
RF(max)
yes
RF(max)
Rev. 05 — 2 June 2009
in RF_CAL_DC_OVER_DT_map
Capprox
freq_input < RF2
in RF_CAL_map, Cprog_table = RFC_CPROG
no
(TMVALUE_CURRENT TMVALUE_RFCAL) / 1000
RF3 = 0 or
Capprox > 255
Capprox = 255
RF_A1
RF1
RF_B1
Cprog_table
freq_input
yes
yes
RF(max)
no
Capprox =
RF_A1
RF_B1 + Cprog_table
(freq_input
Internal table
RFC_CPROG = Cprog EB14
SM = 0, SM_LT = 0,
SM_XT = 0
TDA18211HD
DVB-T Silicon Tuner IC
TMVALUE_CURRENT
Cprog_table
RF1
RF2
RF3
RF_A1
RF_A2
RF_B1
RF_B2
dCoverdT
RFCAL_TCOMP
RF1) +
© NXP B.V. 2009. All rights reserved.
I
EP3
2
C-bus
Capprox
001aag946
MS
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