TL7231MD Datasheet, PDF (12/37 Pages) Samsung semiconductor – FULL LAYER-III ISO/IEC 11172-3 AUDIO DECODER

TL7231MD
COMM
AND
00h
01h
04h
05h
06h
07h
08h
09h
0Dh
0Fh
10h
11h
12h
14h
15h
16h
17h
18h
19h
PARAME
TER
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
1byte
None
None
1byte
Table 6. Host Interface Port Commands
MEANING
DESCRIPTION
Stop
MP3 Decoding
Voice Encoding
Voice Decoding
Voice Encoding
Voice Decoding
Voice Encoding
Voice Decoding
Revision Code
Sleep
Mute ON
Mute OFF
Internal ADC
Internal DAC
External DAC
External DAC
Format
MSB First
LSB First
Report Format
Stop execution and go into WAIT state.
Execute MP3 decoding.
Execute voice encoding (16Kbps).
Execute voice decoding (16Kbps).
Execute voice encoding (24Kbps).
Execute voice decoding (24Kbps).
Execute voice encoding (32Kbps).
Execute voice decoding (32Kbps).
Report the TL7231MD revision number in HDO0.
Go into SLEEP state. This command should be used in
WAIT state. If this command is used during algorithm
execution, TL7231MD becomes unstable.
When using internal DAC, The output voltage level of
AOUTL/AOUTR is GND. When using external DAC,
DACMUTE# becomes active. After reset, TL7231MD is
set to be mute on.
Mute is disabled.
Use Internal ADC. External ADC interfaces are disabled.
After reset, it is the default value.
Use internal DAC. After reset, it is set to use internal
DAC.
Use external DAC. Internal DAC is disabled. The
waveform of I/O pin related to external DAC is controlled
according to External DAC Format or External DAC
Format 2.
Set the waveform of I/O pin related to external DAC. The
parameter value of External DAC Format command
should be as follows: {0, 0, 0, 0, 0, I²S, PL, PB}. For the
meaning of I²S, PL, and PB, refer to Figure 8.
Serial Interface MSB-first mode. This is the default mode
after reset.
Serial Interface LSB-first mode
The reported contents of HDO6 to HDO15 are changed
according to parameter of this command.
Parameter
0
1
2
3
4
Reporting Contents
all 00h
Tone Control Information
MP3 Decoding Information
Voice Encoding/Decoding
Information
Equalizer Control Information
12/37
SAMSUNG Electronics Co.