UDA1345TS 데이터 시트보기 (PDF) - NXP Semiconductors.

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UDA1345TS

Economy audio CODEC

NXP Semiconductors. 

NXP Semiconductors

Economy audio CODEC

Product specification

UDA1345TS

7.11.2 SYSTEM CLOCK

Under static pin control the options are 256fs and 384fs.

With pin MP3 (pin 14) the mode can be set as is given in

Table 8.

Table 8 System clock settings under static pin mode

MODE

256fs system clock

384fs system clock

MP3

LOW

HIGH

7.11.3 MUTE AND DE-EMPHASIS

Under static pin control via MP2 de-emphasis and mute

can be selected for the playback path. The definition of the

MP2 pin is given in Table 9.

7.11.5 ADC INPUT VOLTAGE CONTROL

The UDA1345TS supports a 2 V (RMS) input using a

series resistor as described in Section 7.2.

In static pin mode the 3-level pin MP4 (pin 15) is used to

select 0 or 6 dB gain mode. When MP4 is set LOW the

ADC is powered-down. When MP4 is set to half the power

supply voltage, then 6 dB gain is selected, and when MP4

is set HIGH then 0 dB gain is selected.

Table 11 MP4 mode settings (static mode)

MODE

ADC Power-down mode

6 dB gain mode

0 dB gain mode

MP4

LOW

MID

HIGH

Table 9 Settings for pin MP2

MODE

No de-emphasis and mute

De-emphasis 44.1 kHz

Muted

MP2

LOW

0.5VDDD

HIGH

7.11.4 MULTIPLE FORMAT INPUT/OUTPUT INTERFACE

The data input/output formats supported under static pin

control are as follows:

• I2S-bus with data word length of up to 24 bits

• MSB-justified serial format with data word length of up to

24 bits

• Two combined data formats with MSB data output and

LSB 16 and 20 bits data input.

The data formats can be selected using pins MP1 (pin 9)

and MP5 (pin 20) as given in Table 10.

Table 10 Data format settings under static pin control

INPUT FORMAT

MSB-justified

I2S-bus

MSB output LSB 20 input

MSB output LSB 16 input

MP1

LOW

LOW

HIGH

HIGH

MP5

LOW

HIGH

LOW

HIGH

The formats are illustrated in Fig.3. Left and right data

channel words are time multiplexed.

2002 May 28

11

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