UDA1343TT Просмотр технического описания (PDF) - Philips Electronics
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UDA1343TT Datasheet PDF : 36 Pages
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Philips Semiconductors
Economy audio CODEC with features
Preliminary specification
UDA1343TT
ADC OUTPUT SELECTOR
A 1-bit value to set the ADC I2S-bus output signal, being either before or after the mixer volume control and mute.
Table 16 ADC output select
ADC_OUT_SELECT1
0
0
1
1
ADC_OUT_SELECT0
0
1
0
1
FUNCTION
digital output before the ADC volume and mute
digital output after ADC volume control and mute
digital output after the mixer
not used
MASTER VOLUME CONTROL
An 8-bit value to program the left and right channel master volume attenuation (VC5 to VC0). The range is 0 dB to −∞ dB
in steps of 0.25 dB (see Table 17).
Table 17 Master volume control: volume settings interpolator core
VC7 VC6 VC5 VC4 VC3 VC2 VC1 VC0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
1
1
0
0
0
0
0
0
1
1
1
0
0
0
0
1
0
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
0
0
0
1
1
0
1
0
1
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
1
0
0
1
1
1
0
0
0
0
0
1
1
1
0
0
1
0
0
VOLUME (dB)
0
0
−0.25
−0.5
−0.75
−1
:
−50
−52
−54
−57
−60
−66
-∞
1
1
1
1
1
1
1
1
-∞
SILENCE DETECTOR SAMPLES SETTING
A 2-bit value to set the number of samples for the digital
silence detector circuit.
Table 18 Silence detector settings
SDET1
0
0
1
1
SDET0
0
1
0
1
FUNCTION
3200 samples
4800 samples
9600 samples
19600 samples
SILENCE DETECTOR ENABLE SETTING
A 1-bit value to enable or disable the digital silence
detection signal.
Table 19 Silence detector control setting
SDET_ON
0
1
FUNCTION
silence detector disabled
silence detector enabled
2000 Jan 12
20
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