TDA8296 Datasheet, PDF (28/87 Pages) NXP Semiconductors – Digital global standard low IF demodulator for analog TV and FM radio

NXP Semiconductors
TDA8296
Digital global standard low IF demodulator for analog TV and FM radio
10
Fsc
[MHz]
8
001aam354
6
4
2
0
0
4
Fig 8. TDA8296 DTO_SC characteristic
8
12
DTO reg val (dec) (1E6)
Table 20. Values for SSIF mode at 54 MHz sampling frequency
Standard
DTO_SC[23:16]
DTO_SC[15:8]
DTO_SC[7:0]
M/N
55h
55h
00h
B
6Dh
09h
00h
G/H
6Dh
09h
00h
I
76h
84h
00h
D/K
76h
84h
00h
L/L-accent 72h
B9h
00h
FM radio
68h
4Bh
00h
Band-pass center frequency
4.5 MHz
5.75 MHz
5.75 MHz
6.25 MHz
6.25 MHz
6.05 MHz
5.5 MHz
9.3.6 Filter settings
Table 21. FILTERS_1 register (address 0Fh) bit description
Legend: * = default value.
Bit
Symbol
Access
Value Description
7 to 5 VID_FILT[2:0]
R/W
video low-pass filter to remove all unwanted frequencies
(own sound carriers) above video content (see Figure 9)
001*
video low-pass filter 4 MHz
010
video low-pass filter 5 MHz
100
video low-pass filter off
4 to 0 NOTCH_FILT[4:0]
R/W
The notch filter attenuates the adjacent sound carrier N − 1,
which is located differently dependent on standard
(see Figure 10).
0 0001* notch filter at 6.9 MHz for M/N standard
0 0010 notch filter at 7.9 MHz for B standard
0 0100 notch filter at 8.3 MHz for D/K and L standard
0 1000 notch filter at 9.25 MHz for G/H, I and L-accent standard
1 0000 notch filter bypass
TDA8296
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 3 March 2011
© NXP B.V. 2011. All rights reserved.
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