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TDA18211HD Datasheet(PDF) 32 Page - NXP Semiconductors

Part # TDA18211HD
Description  DVB-T Silicon Tuner IC
PDF  66 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

TDA18211HD Datasheet(HTML) 32 Page - NXP Semiconductors

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TDA18211HD_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 2 June 2009
32 of 66
NXP Semiconductors
TDA18211HD
DVB-T Silicon Tuner IC
Fig 13. Flowchart TDA18211PowerScan
001aag943
CID_GAIN < CID_Target
CID_Target
count_limit
freq_MAINPLL
MS
freq_input
freq_input
freq_input
MS
bcal
freq_output
Start
TDA18211PowerScan
End
TDA18211PowerScan
RF_BAND_map
RF_CAL_map
CID_TARGET_map
freq_MAINPLL
count
freq_MAINPLL
sgn count
freq_MAINPLL
RF_BAND = RF_BAND
RFC_CPROG = CPROG_table
GAIN_TAPER = GAIN_TAPER
CID_Target = CID_Target
count_limit = count_limit
-
Actions
freq_MAINPLL
freq_MAINPLL = freq_input + 1 MHz
count
CID_GAIN
wait
count = count + 200d
CID_GAIN
Read power detection informations
Call TDA18211ReadExtended
sgn
count
wait
sgn =
− sgn
count = 200d
wait = true
bcal = 1
freq_output = freq_MAINPLL
− 1 MHz
End
TDA18211PowerScan
bcal
freq_output
freq_input
bcal = 0
freq_output = freq_input
sgn
freq_output
bcal
count
wait
Algorrithm Initialization
sgn =1
freq_output = freq_input
bcal = 0
count = 0
wait = false
freq_MAINPLL = freq_input + sgn
× count + 1 MHz
Wait 100
µs - PLL locking
Wait 5 ms - PLL locking
wait = false
Downconvert updated freq_input to 1 MHz
Call TDA18211CalcMAINPLL
Read power detection informations
Call TDA18211ReadExtended
No
No
Yes
Yes
Wait 5 ms - PLL locking
Downconvert freq_input to 1 MHz
Call TDA18211CalcMAINPLL
Find RF_BAND = fRF(max) in RF_BAND_map(MS)
Find Cprog_table = fRF(max) in RF_CAL_map
Find GAIN_TAPER = fRF(max) in GAIN_TAPER_map
Find CID_TARGET count_limit = fRF(max) in
CID_TARGET_map
-
EP2, EB14
Tuner register update
Internal table
PC
Detection mode
Launch power detection measurement
CAL_MODE = 1
-
EP4
EP2
Launch power detection measurement
-
EP2
count > count_limit
No
No
Yes
Yes
Yes
CID_GAIN
≥ CID_Target
wait = true
No
sgn > 0



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