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AT83SND1CXXX-ROTIL Scheda tecnica(PDF) 79 Page - ATMEL Corporation

Il numero della parte AT83SND1CXXX-ROTIL
Spiegazioni elettronici  Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
PDF  212 Pages
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Produttore elettronici  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT83SND1CXXX-ROTIL Scheda tecnica(HTML) 79 Page - ATMEL Corporation

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79
4109J–8051–10/06
AT8xC51SND1C
Reset Value = 1100 0000b
Table 77. AUDDAT Register
AUDDAT (S:9Dh) – Audio Interface Data Register
Reset Value = 1111 1111b
Table 78. AUDCLK Register
AUDCLK (S:ECh) – Audio Clock Divider Register
Reset Value = 0000 0000b
Bit
Number
Bit
Mnemonic
Description
7SREQ
Audio Sample Request Flag
Set in C51 audio source mode when the audio interface request samples (buffer
half empty). This bit generates an interrupt if not masked and if enabled in IEN0.
Cleared by hardware when samples are loaded in AUDDAT.
6UDRN
Audio Sample Under-run Flag
Set in C51 audio source mode when the audio interface runs out of samples
(buffer empty). This bit generates an interrupt if not masked and if enabled in
IEN0.
Cleared by hardware when samples are loaded in AUDDAT.
5
AUBUSY
Audio Interface Busy Bit
Set in C51 audio source mode when the audio interface can not accept more
sample (buffer full).
Cleared by hardware when buffer is no more full.
4 - 0
-
Reserved
The value read from these bits is always 0. Do not set these bits.
7654
3210
AUD7
AUD6
AUD5
AUD4
AUD3
AUD2
AUD1
AUD0
Bit
Number
Bit
Mnemonic
Description
7 - 0
AUD7:0
Audio Data
8-bit sampling data for voice or sound playing.
7654
3210
-
-
-
AUCD4
AUCD3
AUCD2
AUCD1
AUCD0
Bit
Number
Bit
Mnemonic
Description
7 - 5
-
Reserved
The value read from these bits is always 0. Do not set these bits.
4 - 0
AUCD4:0
Audio Clock Divider
5-bit divider for audio clock generation.



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