PRODUCT SPECIFICATION
TMC22x5yA
1
0
0
-10
-20
-30
-40
-1
-2
-3
-4
-5
-6
Bandsplit Filter 2
Bandsplit Filter 2
Bandsplit Filter 1
Bandsplit Filter 1
-50
-60
-70
Normalized Frequency
Normalized Frequency
Figure 14. Bandsplit Filter, Passband Response
Figure 13. Bandsplit Filter, Full Frequency Response
Table 2. Normalized Subcarrier Frequency as a Function of Pixel Data Rates
FSC
Pixel Rate (MHz)
(MHz)
Normalized FSC
Comments
12.27
3.57954545
3.57954545
4.43361875
3.57954545
4.43361875
4.43361875
4.43361875
3.57561149
3.58205625
3.57561149
0.2917
NTSC square pixel rate
13.50
0.2652
NTSC D1 pixel rate
13.50
0.3284
PAL-I D1 pixel rate
14.32
0.2500
NTSC four times subcarrier (D2/D3)
PAL-I square pixel rate
14.75
0.3006
15.00
0.2956
PAL-I square pixel rate
17.73
0.2500
PAL-I four times subcarrier (D2/D3)
PAL-M D1 pixel rate
13.5
0.2649
13.5
0.2653
PAL-N D1 pixel rate
14.30
0.2500
PAL-M four times subcarrier (D2/D3)
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.
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
45
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