UDA1342 PHILIPS [NXP Semiconductors], UDA1342 Datasheet - Page 23

• Manufacturer Part Number: UDA1342
• Description: Audio CODEC
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9.8
A 3-bit value to select the data format.
Table 27 Data format selection
9.9
A 1-bit value to disable the DAC to reduce power
consumption. The DAC power-off is not recommended
when the DAC outputs are DC loaded.
Table 28 DAC power control
9.10
A 2-bit value to select the oversampling rate of the input
signal (see Table 32). In the quad speed input rate, care
must be taken that the input signal is smaller than
Table 32 Input oversampling rate
2000 Mar 29
IF2
5.67 dB (FS).
OS1
0
0
0
0
1
1
1
1
Audio CODEC
0
0
1
1
IF1
DP
Data format
DAC power control
Input oversampling rate
0
0
1
1
0
0
1
1
0
1
OS0
0
1
0
1
IF0
0
1
0
1
0
1
0
1
I
LSB-justified16 bits
LSB-justified 20 bits
LSB-justified 24 bits
MSB-justified
LSB-justified 16 bits input and
MSB-justified output
LSB-justified 20 bits input and
MSB-justified output
LSB-justified 24 bits input and
MSB-justified output
DAC power-off
DAC power-on
single speed
double speed
quad speed
reserved
2
S-bus
MODE
FUNCTION
FUNCTION
16 to 110 kHz
32 to 220 kHz
64 to 440 kHz
FREQUENCY
SAMPLING
supported
not supported
not supported
ADC
23
9.11
A 1-bit value to control the DAC polarity.
Table 29 Polarity control of DAC
9.12
A 1-bit value to select the mixing position of the ADC signal
in the DAC.
Table 30 DAC mixing position switch
9.13
A 1-bit value to enable the digital mixer of the DAC.
Table 31 DAC mixer
MPS
PDA
MIX
DAC polarity
DAC mixing position switch
DAC mixer
0
1
0
1
0
1
all digital filters and all features, including mixing
are available
first digital filter is bypassed, only master volume
and master mute features are available
no mixing nor any sound feature is supported
non-inverting
inverting
before sound features
after sound features
disable mixer
enable mixer
DAC FEATURES
FUNCTION
FUNCTION
FUNCTION
Preliminary specification
UDA1342TS