UDA1344 Просмотр технического описания (PDF) - Philips Electronics
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UDA1344 Datasheet PDF : 28 Pages
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Philips Semiconductors
Low-voltage low-power stereo audio
CODEC with DSP features
Product specification
UDA1344TS
Static pin mode
The UDA1344TS is set to static pin mode by setting both
pins MC1 and MC2 to HIGH level.
The controllable features in this mode are:
• System clock frequency selection
• Data input/output format selection
• De-emphasis and mute control
• Power-down and ADC input level selection.
PINNING DEFINITION
The pinning definition in the static pin mode is given in
Table 6.
Table 6 Pinning definition in static pin model
PIN
MP1
MP2
MP3
MP4
MP5
DESCRIPTION
data input/output setting
three-level pin to select no
de-emphasis, de-emphasis or mute
256fs or 384fs system clock selection
three-level pin to select
ADC power-down, ADC input
1 V (RMS) or ADC input 2 V (RMS)
data input/output setting
SYSTEM CLOCK
In the static pin mode the options are 256fs and 384fs as
given in Table 7.
Table 7 System clock selection
PIN MP3
LOW
HIGH
SELECTION
256fs clock frequency
384fs clock frequency
MUTE AND DE-EMPHASIS
The level definition of pin MP2 pin is given in Table 8.
Table 8 Levels for pin MP2
PIN MP2
LOW
0.5VDDD
HIGH
SELECTION
no de-emphasis and mute
de-emphasis 44.1 kHz
mute
INPUT/OUTPUT DATA FORMAT SELECTION
The input/output data format can be selected using
pins MP1 and MP5 as given in Table 9.
Table 9 Data format selection
PIN MP1 PIN MP5
SELECTION
LOW
LOW
LOW input: MSB-justified
HIGH input: I2S-bus
HIGH
LOW input: LSB-justified 20 bits;
output: MSB-justified
HIGH
HIGH input: LSB-justified 16 bits;
output: MSB-justified
ADC INPUT VOLTAGE SELECTION AND POWER-DOWN
In the static pin mode the three-level pin MP4 is used to
select 0 or 6 dB gain and power-down.
Table 10 Levels for pin MP4
PIN MP4
LOW
0.5VDDD
HIGH
SELECTION
ADC power-down
6 dB gain
0 dB gain
2001 Jun 29
9
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