TDA8296 Datasheet, PDF (38/87 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
Table 35. SOUNDSET_2 register (address 21h) bit description …continued
Legend: * = default value.
Bit
Symbol
Access Value Description
2
AUTO_MUTE
R/W
When active, the mono sound signal is muted if the horizontal lock flag
(N_H_LOCK) disappears. This setting only makes sense in case the sound
DAC output is also set to mono sound (SSIF_SND[1:0] = 01). FOR_MUTE
has no function if SSIF_SND[1:0] =10.
0*
off
1
on
X
don’t care if SSIF output is chosen (SSIF_SND[1:0] = 10)
1 and 0 SSIF_SND[1:0] R/W
either mono sound or SSIF can be chosen for the sound DAC output
01
mono sound^[1]
10*
SSIF
[1] Before activating mono sound, the TV standard needs to be set via easy programming
Table 36. SOUND_LEVEL register (address 22h) bit description
Legend: * = default value.
Bit Symbol
Access Value Description
7 to 5 -
R/W 000* not used
4 to 0 SND_LVL[4:0] R/W
mono sound output level
0 0001
−12 dB nominal; implemented for flexibility reasons. With this setting, the
adaptation to different standard requirements can be done.
0 0010
−6 dB nominal; implemented for flexibility reasons. With this setting, the
adaptation to different standard requirements can be done. It is chosen for FM
radio because of the large FM deviation involved.
0 0100
Nominal setting; FM deviations up to 100 kHz can be processed without sound
DAC clipping. The clipping level is 535 mV (RMS) typically.
0 1000* +6 dB nominal; chosen for M/N standard due to less nominal frequency
deviation
1 0000
+12 dB nominal; implemented for flexibility reasons. With this setting, the
adaptation to different standard requirements can be done.
X XXXX don’t care if SSIF output is chosen (SSIF_SND[1:0] = 10)
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.
38 of 87