TDA8295_09 Datasheet, PDF (37/83 Pages) NXP Semiconductors – Digital global standard low IF demodulator for analog TV and FM radio

NXP Semiconductors
TDA8295
Digital global standard low IF demodulator for analog TV and FM radio
Table 36. CVBS_EQ register (address 1Fh) bit description
Legend: * = default value.
Bit Symbol
Access Value
Description
7 to 0 CVBS_EQ[7:0] R/W
The video equalizer can be used for the
compensation of a principal tuner tilt or to change
the video frequency according to customer taste.
The figures given are at 5 MHz CVBS with respect
to low frequencies (see Figure 10).
0000 0001
The video frequency response is −8 dB for
5 MHz.
0000 0010
The video frequency response is −6 dB for
5 MHz.
0000 0100
The video frequency response is −4 dB for
5 MHz.
0000 1000* The video frequency response is −2 dB for
5 MHz.
0001 0000
The video frequency response is made flat in this
mode.
0010 0000
The video frequency response is +2 dB (peaking)
for 5 MHz.
0100 0000
The video frequency response is +4 dB (peaking)
for 5 MHz.
1000 0000
The video frequency response is +6 dB (peaking)
for 5 MHz.
10
α_resp(f)
(dB)
6
001aah361
2
−2
−6
−10
0
1
2
3
4
5
6
7
f (MHz)
Fig 10. Video equalizer curves
TDA8295_C2_2
Product data sheet
Rev. 02 — 27 November 2009
© NXP B.V. 2009. All rights reserved.
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