UDA1342TS Просмотр технического описания (PDF) - Philips Electronics
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UDA1342TS Datasheet PDF : 44 Pages
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Philips Semiconductors
Audio CODEC
Preliminary specification
UDA1342TS
9.19 Silence detector switch
A 1-bit value to enable the silence detector.
Table 38 Silence detector switch
SDS
0
1
FUNCTION
disable silence detector
enable silence detector
9.20 Mute
Three 1-bit values to enable the digital mute. Bit MT is the
master mute, using bit MTA the signal from the digital
interface can be soft muted when the DAC mixer is
enabled and using bit MTB the signal from ADC can be
soft muted.
Table 39 Mute
MT
MTA
MTB
0
1
no muting
muting
FUNCTION
9.23 ADC input amplifier gain
Two 4-bit values to program the gain of the input
amplifiers. Bits IA applies for input amplifier A and bits IB
to input amplifier B.
Table 42 ADC input amplifier gain settings
IA3
IB3
IA2
IB2
IA1
IB1
IA0
IB0
AMPLIFIER GAIN (dB)
0
0
0
0
0
0
0
0
1
3
0
0
1
0
6
0
0
1
1
9
0
1
0
0
12
0
1
0
1
15
0
1
1
0
18
0
1
1
1
21
1
0
0
0
24
9.21 Quick mute mode
A 1-bit value to enable the quick mute function of the
master mute.
Table 40 Quick mute mode settings
QM
FUNCTION
0
soft mute mode
1
quick mute mode
9.22 De-emphasis
A 3-bit value to enable the digital de-emphasis filter.
Table 41 De-emphasis settings
DE2 DE1 DE0
FUNCTION
0
0
0 no de-emphasis
0
0
1 de-emphasis at fs = 32 kHz
0
1
0 de-emphasis at fs = 44.1 kHz
0
1
1 de-emphasis at fs = 48 kHz
1
0
0 de-emphasis at fs = 96 kHz
2000 Mar 29
25
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