tda8295 NXP Semiconductors, tda8295 Datasheet - Page 38

• Manufacturer Part Number: tda8295
• Description: Tda8295 Digital Global Standard Low If Demodulator For Analog Tv And Fm Radio
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA8295_1
Product data sheet
Table 38.
Legend: * = default value.
Table 39.
Legend: * = default value.
Bit
3
2
1 and 0 SSIF_SND[1:0] R/W
Bit
7 to 5 -
4 to 0 SND_LVL[4:0] R/W
Symbol
Symbol
FOR_MUTE
AUTO_MUTE
SOUNDSET_2 register (address 21h) bit description
SOUND_LEVEL register (address 22h) bit description
Digital global standard low IF demodulator for analog TV and FM radio
Access Value
R/W
Rev. 01 — 4 February 2008
Access Value
R/W
R/W
-
0 0001
0 0010
0 0100
0 1000*
1 0000
X XXXX
0*
1
X
0*
1
X
01
10*
Description
not used
mono sound output level
Description
When active, the mono sound signal is always muted.
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.
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.
either mono sound or SSIF can be chosen for the
sound DAC output
With this setting, the adaptation to different standard
requirements can be done.
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.
Nominal setting; FM deviations up to 100 kHz can be
processed without sound DAC clipping. The clipping
level is 535 mV (RMS) typically.
+6 dB nominal; chosen for M/N standard due to less
nominal frequency deviation
+12 dB nominal; implemented for flexibility reasons.
With this setting, the adaptation to different standard
requirements can be done.
don’t care if SSIF output is chosen
(SSIF_SND[1:0] = 10)
12 dB nominal; implemented for flexibility reasons.
6 dB nominal; implemented for flexibility reasons.
off
on
don’t care if SSIF output is chosen
(SSIF_SND[1:0] = 10)
off
on
don’t care if SSIF output is chosen
(SSIF_SND[1:0] = 10)
mono sound
SSIF
…continued
TDA8295
© NXP B.V. 2008. All rights reserved.
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