Figure 77. Audio Output Format
Left Channel
Right Channel
DSEL
1
2
3
13
14
15
16
1
2
3
13
14
18
14
15
16
DCLK
DDAT
LSB MSB B14
B1 LSB MSB B14
I2S Format with DSIZE = 0 and JUST4:0 = 00001.
B1
Left Channel
Right Channel
DSEL
DCLK
DDAT
1
2
3
17
18
32
1
2
3
17
32
MSB B14
LSB
MSB B14
LSB
I2S Format with DSIZE = 1 and JUST4:0 = 00001.
Left Channel
Right Channel
DSEL
DCLK
DDAT
1
2
3
13
14
15
16
1
2
3
13
15
16
MSB B14
B1 LSB MSB B15
MSB/LSB Justified Format with DSIZE = 0 and JUST4:0 = 00000.
B1 LSB
Left Channel
16 17
Right Channel
16 17
DSEL
DCLK
DDAT
1
18
31
32
1
18
31
32
MSB B14
B1 LSB
MSB B14
B1 LSB
16-bit LSB Justified Format with DSIZE = 1 and JUST4:0 = 10000.
Left Channel
15 16
Right Channel
15 16
DSEL
DCLK
DDAT
1
30
31
32
1
30
31
32
B2 B1 LSB
18-bit LSB Justified Format with DSIZE = 1 and JUST4:0 = 01110.
B2 B1 LSB
MSB B16
MSB B16
Registers
Table 165. AUCON Register
AUCON (1.F1h) – Audio Controller Control Register
7
6
5
4
3
2
1
0
BPEN
VSURND
BBOOST
MIXEN
EQUDIS
-
-
ACCKEN
Bit
Bit
Number
Mnemonic Description
Baseband Processor Enable Bit
7
6
5
4
3
BPEN
VSURND
BBOOST
MIXEN
Set to enable the baseband processing.
Clear to bypass the baseband processing and disable the baseband features.
Virtual Surround Enable Bit
Set to enable the virtual surround effect.
Clear to disable the virtual surround effect.
Bass Boost Enable Bit
Set to enable the bass boost effect.
Clear to disable the bass boost effect.
Mixing Enable Bit
Set to enable mixing of ADC output with DAC output.
Clear to disable mixing of ADC output with DAC output.
Equalizer Disable Bit
EQUDIS
Set to disable the 3-band equalizer.
Clear to enable the 3-band equalizer.
158
AT85C51SND3Bx
7632A–MP3–03/06
ATMEL [ ATMEL ]
