at85c51snd3b ATMEL Corporation, at85c51snd3b Datasheet - Page 164
at85c51snd3b
Manufacturer Part Number
at85c51snd3b
Description
Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
Manufacturer
ATMEL Corporation
Datasheet
1.AT85C51SND3B.pdf
(270 pages)
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AT85C51SND3B
Table 177. APELEV Register
APELEV (2.F7h) - Audio Processor Equalizer Level Status Register
Reset Value = 0000 0000b
Table 178. ACCON Register
ACCON (2.EAh) – Audio Codec Control Register
Number
Number
7-5
4-0
Bit
Bit
7
7
7
5
5
4
3
2
1
-
-
Mnemonic Description
Mnemonic Description
EQLEV4:0
AMBSEL
AMBSEL
AOSSEL
AMBEN
AODRV
AISSEL
AIEN
Bit
Bit
6
6
-
-
-
-
-
Reserved
The value read from these bits is always 0. Do not set these bits.
Equalizer Audio Level
00000b: min. level to 11111b: max. level.
Reserved
The value read from this bit is always 0. Do not set this bit.
Microphone Bias Select Bit
Set to select 1.5V bias output voltage in high or low voltage configuration.
Clear to select 2V bias output voltage in high voltage configuration.
Microphone Bias Enable Bit
Set to enable the microphone bias output.
Clear to disable the microphone bias output.
Audio Input Source Select Bit
Set to select the microphone as input source.
Clear to select the line inputs as input source.
Audio Input Enable Bit
Set to enable the audio input system.
Clear to disable the audio input system.
AT85C51SND3B1 and AT85C51SND3B2: Audio Output Drive Select Bit
Set to select the 32
Clear to select the 50
AT85C51SND3B0: Reserved
The value read from this bit is always 0. Do not set this bit.
AT85C51SND3B1 and AT85C51SND3B2: Audio Output Source Select Bit
Set to select the audio processor as output source.
Clear to select the line inputs as output source.
AT85C51SND3B0: Reserved
The value read from this bit is always 0. Do not set this bit.
AMBEN
5
5
-
EQLEV4
AISSEL
4
4
Ω
KΩ
drive in high voltage configuration.
drive in high or low voltage configuration.
EQLEV3
AIEN
3
3
AODRV -
EQLEV2
2
2
AOSSEL -
EQLEV1
1
1
7632C–MP3–11/06
EQLEV0
AOEN -
0
0
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