UDA1345 PHILIPS [NXP Semiconductors], UDA1345 Datasheet - Page 10

• Manufacturer Part Number: UDA1345
• Description: Economy audio CODEC
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
S
Under static pin control the options are 256f
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
M
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.
Table 9 Settings for pin MP2
M
The data input/output formats supported under static pin
control are as follows:
The data formats can be selected using pins MP1 (pin 9)
and MP5 (pin 20) as given in Table 10.
2000 Apr 18
256f
384f
No de-emphasis and mute
De-emphasis 44.1 kHz
Muted
YSTEM CLOCK
UTE AND DE
ULTIPLE FORMAT INPUT
I
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.
Economy audio CODEC
2
S-bus with data word length of up to 24 bits
s
s
system clock
system clock
MODE
MODE
-
EMPHASIS
/
OUTPUT INTERFACE
0.5V
HIGH
HIGH
LOW
LOW
MP3
MP2
s
DDD
and 384f
s
.
10
Table 10 Data format settings under static pin control
The formats are illustrated in Fig.3. Left and right data
channel words are time multiplexed.
ADC
The UDA1345TS supports a 2 V (RMS) input using a
series resistor as described in Section “Analog front-end”.
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)
MSB mode
I
MSB output
LSB 20 input
MSB output
LSB 16 input
ADC power-down mode
6 dB gain mode
0 dB gain mode
2
S-bus
INPUT FORMAT
INPUT VOLTAGE CONTROL
MODE
HIGH
HIGH
LOW
LOW
MP1
Preliminary specification
UDA1345TS
HIGH
LOW
MP4
MID
HIGH
HIGH
LOW
LOW
MP5