tda8296 NXP Semiconductors, tda8296 Datasheet - Page 30

• 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 22.
Legend: * = default value.
[1]
[2]
Bit
7 and 6 -
5
4
3 to 0
Fig 11. Video low pass frequency response in smooth roll off or low ripple mode
SSIF band-pass center frequency is controlled by DTO_SC[23:0]. See
values.
Deviating from easy programming values for FILTERS_2, the narrow SSIF band-pass filter
(SPB[3:0] = 0100) should be used for M/N standard.
amplitude
response
(1) 4 MHz video filter in smooth roll off mode
(2) 4 MHz video filter in low ripple mode
(3) 5 MHz video filter in smooth roll off mode
(4) 5 MHz video filter in low ripple mode
(dB)
Symbol
VID_FILT_
LOW_RIP
-
SBP[3:0]
-10
-2
-6
2
FILTERS_2 register (address 10h) bit description
0
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 Description
R/W
R/W
R/W
R/W
Rev. 1 — 3 March 2011
00*
0
1*
1*
0001*
0010
0100
2
not used
video filter characteristic adjust
reserved, must be set to logic 1
The SSIF band-pass attenuates unwanted video
frequencies
it provides almost channel selectivity (see
smooth roll-off
low ripple
SSIF band-pass, wide bandwidth
SSIF band-pass, normal bandwidth (1.1 MHz, all
TV standards)
SSIF band-pass, narrow bandwidth (200 kHz,
FM radio)
[1][2]
(1)
, e.g. color carrier. For FM radio standard
4
(2)
frequency (MHz)
Table 20
(3)
(4)
for recommended DTO
TDA8296
001aan681
© NXP B.V. 2011. All rights reserved.
Figure
6
12).
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