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TDA18211HD_5 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 05 — 2 June 2009 38 of 66
NXP Semiconductors
TDA18211HD
DVB-T Silicon Tuner IC
Fig 17. Flowchart TDA18211ChannelConfiguration
001aag947
Standard mode update
Update TV broadcast parameters
Switch RFAGC to high speed mode
Normal mode
Update IF output level
Update IF notch frequency
Update extended byte 22
Update IF center frequency
STD = STD from STANDARD_DESCRIPTION_map according to Standard value
STD[2] = 0
CAL_MODE = 0
IF_LEVEL = IF_LEVEL from STANDARD_DESCRIPTION_map according to Standard
IF_NOTCH = IF_NOTCH from STANDARD_DESCRIPTION_map according to Standard
EB22 = EB22 from STANDARD_DESCRIPTION_map according to Standard
IF_FREQ = IF_FREQ from STANDARD_DESCRIPTION_map according to Standard
-
-
-
-
EB22
-
Actions Internal table I
2
C-bus
Update frequency dependent parameters
Find IR_MEAS = f
RF(max)
in IR_MEAS_map
Find BP_FILTER = f
RF(max)
in BP_FILTER_map
Find RF_BAND = f
RF(max)
in RF_BAND_map
Find GAIN_TAPER = f
RF(max)
in GAIN_TAPER_map
IR_MEAS = IR_MEAS
BP_FILTER = BP_FILTER
RF_BAND = RF_BAND
GAIN_TAPER = GAIN_TAPER
-
Disable power level indicator DIS_POWER_LEVEL = 1 -
Start TDA18211ChannelConfiguration
End TDA18211ChannelConfiguration
IR_MEAS_map
BP_FILTER_map
RF_BAND_map
GAIN_TAPER_map
freq_input
MS
STANDARD_DESCRIPTION_
map
Standard
MS
Dual-tuner and AGC1 extra configurations managing
MAIN VCO when Master, CAL VCO when Slave
AGC1 always active
AGC1 has priority on AGC2
Tuner registers update
freq_pll = freq_input + IF_freq
Tune to wanted channel frequency
Call TDA18211CalcMAINPLL
Tuner registers update
MAIN PLL charge pump source
Wait 1 ms
Normal operation for the MAIN PLL
- TM ... EP5
LO_FORCESRCE = 1
LO_FORCESRCE = 0
EB4
EB4
Switch RFAGC to normal speed mode STD[2] = 1 EP3
Wait 20 ms
- EB1
CALVCO_FORLON = MS
AGC1_ALWAYS_MASTERN = 0
AGC_FIRSTN = 0
-
IF_freq
freq_pll
Tune to wanted channel frequency
Call TDA18211CalcCALPLL
Find CAL_POST_DIV = f
LO(max)
in
CAL_PLL_map
CAL PLL charge pump source
Wait 1 ms
Normal operation for the CAL PLL
MPD = CAL_POST_DIV && 7Fh MPD
CAL_FORCESRCE = 1
CAL_FORCESRCE = 0
Tuner registers update - TM ... EP5
EB5
EB5
Switch RFAGC to normal speed mode STD[2] = 1 EP3
Wait 20 ms
freq_pll
CAL_PLL_map
freq_pll
MS
freq_input
IF_freq
End TDA18211ChannelConfiguration
MS = 1
yes
no
