UDA1343 Просмотр технического описания (PDF) - Philips Electronics
Номер в каталоге
Компоненты Описание
производитель
UDA1343 Datasheet PDF : 36 Pages
| |||
Philips Semiconductors
Economy audio CODEC with features
Preliminary specification
UDA1343TT
ADC AND IIS MIXER VOLUME CONTROL
An 8-bit value to program the volume ADC attenuation. The range is 0 dB to −∞ dB in steps of 0.25 dB (see Table 20).
Table 20 Mixer volume settings.
VC-AD7
VC-IIS7
0
0
0
0
0
0
VC-AD6
VC-IIS6
0
0
0
0
0
0
VC-AD5
VC-IIS5
0
0
0
0
0
0
1
0
1
1
0
1
1
0
1
1
1
0
1
1
0
1
1
0
1
1
0
VC-AD4
VC-IIS4
0
0
0
0
0
0
1
1
1
0
0
0
0
VC-AD3
VC-IIS3
0
0
0
0
0
0
0
1
1
0
0
1
1
VC-AD2
VC-IIS2
0
1
1
1
1
1
1
0
1
0
1
0
1
VC-AD1
VC-IIS1
0
0
0
1
1
0
0
0
0
0
0
0
0
VC-AD0
VC-IIS0
0
0
1
0
1
0
0
0
0
0
0
0
0
VOLUME
(dB)
0
0
−0.25
−0.5
−0.75
−1
:
−44
−46
−48
−51
−54
−60
−∞
1
1
1
1
1
1
1
1
−∞
MASTER MUTE CONTROL
A 1-bit value to enable the digital master mute. This mute
control signal mutes the master playback signal after
mixing.
Table 21 Master mute
MTM
0
1
FUNCTION
no muting
muting
MIXER MUTE CONTROL
Two 1-bit values to enable the digital mutes of the mixer.
These signals can be used to independently mute the
I2S-bus playback signal or the signal coming from the
ADC. These mute functions can only be used in the mixer
mode when the MIX bit is set HIGH.
The MT-ADC and MT-IIS bits can also be used to select
either the I2S-bus or the ADC signal for playback.
DC FILTER
Table 22 Mixer mute
MT-ADC/MT-IIS
0
1
FUNCTION
no muting
muting
DIGITAL DE-EMPHASIS
A 2-bit value to enable the digital de-emphasis filter.
Table 23 De-emphasis settings
DE2 DE1 DE0
FUNCTION
0
0
0 no de-emphasis
0
0
1 de-emphasis; 32 kHz
0
1
0 de-emphasis; 44.1 kHz
0
1
1 de-emphasis; 48 kHz
1
0
0 de-emphasis; 96 kHz
1
0
1 not used
1
1
0
1
1
1
A 1-bit value to enable the digital DC filter (see Table 24).
2000 Jan 12
21
Share Link: 