TMC22151AKHC CADEKA [Cadeka Microcircuits LLC.], TMC22151AKHC Datasheet - Page 45

• Manufacturer Part Number: TMC22151AKHC
• Description: Multistandard Digital Video Decoder Three-Line Adaptive Comb Decoder Family, 8 & 10 bit
• Manufacturer: CADEKA [Cadeka Microcircuits LLC.]

PRODUCT SPECIFICATION
Table 2. Normalized Subcarrier Frequency as a Function of Pixel Data Rates
Comb Filter Input
The inputs to the comb filter are selected from either the high
frequency outputs of the bandsplit filters, if using a chroma
comb filter, or the full composite waveforms when imple-
menting a luma comb. The two sets of high and low fre-
quency signals from the bandsplit filters are used for both the
REV. 1.0.0 2/4/03
Pixel Rate (MHz)
Figure 13. Bandsplit Filter, Full Frequency Response
-10
-20
-30
-40
-50
-60
-70
0
12.27
13.50
13.50
14.32
14.75
15.00
17.73
14.30
13.5
13.5
Bandsplit Filter 1
Normalized Frequency
3.57954545
3.57954545
4.43361875
3.57954545
4.43361875
4.43361875
4.43361875
3.57561149
3.58205625
3.57561149
(MHz)
F
SC
Bandsplit Filter 2
Normalized F
0.2917
0.2652
0.3284
0.2500
0.3006
0.2956
0.2500
0.2649
0.2653
0.2500
SC
luma and chroma SIMPLE signals, and in the generation of
the comb fail signals. These signals are denoted xHL, xHH,
and xHF where L denotes the low frequency portion of the
signal, H the high frequency portion of the signal and F the
full frequency spectrum of the input signal from line x; and
are shown in Figure 15.
NTSC square pixel rate
NTSC D1 pixel rate
PAL-I D1 pixel rate
NTSC four times subcarrier (D2/D3)
PAL-I square pixel rate
PAL-I square pixel rate
PAL-I four times subcarrier (D2/D3)
PAL-M D1 pixel rate
PAL-N D1 pixel rate
PAL-M four times subcarrier (D2/D3)
-1
-2
-3
-4
-5
-6
1
0
Figure 14. Bandsplit Filter, Passband Response
Normalized Frequency
Comments
Bandsplit Filter 1
Bandsplit Filter 2
TMC22x5yA
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