tda8296 NXP Semiconductors, tda8296 Datasheet - Page 35

• Manufacturer Part Number: tda8296
• Description: Tda8296 Digital Global Standard Low If Demodulator For Analog Tv And Fm Radio
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA8296
Product data sheet
Table 31.
Legend: * = default value.
Table 32.
Legend: * = default value.
Bit
7 to 0 CVBS_LVL[7:0] R/W
Bit
7 to 0 CVBS_EQ[7:0] R/W
Symbol
Symbol
CVBS_LEVEL register (address 1Eh) bit description
CVBS_EQ register (address 1Fh) bit description
Digital global standard low IF demodulator for analog TV and FM radio
All information provided in this document is subject to legal disclaimers.
Access Value
Access Value
Rev. 1 — 3 March 2011
0000 0001
0000 0010
0000 0100
0000 1000
0001 0000*
0010 0000
0100 0000
1000 0000
51h
5Bh
66h
73h*
81h
91h
A2h
Description
With this byte, the nominal video output level is freely
programmable. The format is unsigned integer (offset
binary). Settings below 40h and above C0h, which
correspond to −5 dB (40h) and +4.5 dB (C0h) related to
the default value, are forbidden. In the following some
possible settings in 1 dB steps are shown.
−3 dB nominal
−2 dB nominal
−1 dB nominal
nominal: 1 V (p-p) video output level (sync-peak)
+1 dB nominal
+2 dB nominal
+3 dB nominal
Description
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
The video frequency response is −8 dB for
5 MHz.
The video frequency response is −6 dB for
5 MHz.
The video frequency response is −4 dB for
5 MHz.
The video frequency response is −2 dB for
5 MHz.
The video frequency response is made flat in this
mode.
The video frequency response is +2 dB (peaking)
for 5 MHz.
The video frequency response is +4 dB (peaking)
for 5 MHz.
The video frequency response is +6 dB (peaking)
for 5 MHz.
Figure
TDA8296
13).
© NXP B.V. 2011. All rights reserved.
35 of 87