TDA18271HD/C2,557 NXP Semiconductors, TDA18271HD/C2,557 Datasheet - Page 32

• Manufacturer Part Number: TDA18271HD/C2,557
• Description: IC TV SILICON TUNER 64-HLQFN
• Manufacturer: NXP Semiconductors
• Type: Silicon Tunerr

Specifications of TDA18271HD/C2,557

• Applications: Set-Top Boxes
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935285058557; TDA18271HD/C2; TDA18271HD/C2

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