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AT83SND1CXXX-ROTIL Datasheet(PDF) 68 Page - ATMEL Corporation

Part # AT83SND1CXXX-ROTIL
Description  Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
PDF  212 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT83SND1CXXX-ROTIL Datasheet(HTML) 68 Page - ATMEL Corporation

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4109J–8051–10/06
AT8xC51SND1C
Figure 12-6. MP3 Interrupt Service Routine Flow
Note:
1. Test these bits only if needed (unmasked interrupt).
12.7
Registers
Table 62. MP3CON Register
MP3CON (S:AAh) – MP3 Decoder Control Register
Data Request?
MPFREQ = 1?
Layer Error
Handler
CRC Error
Handler
Data Request
Handler
Ancillary Data
Handler
Synchro Error
Handler
MP3 Decoder
ISR
Read MP3STA
Write MP3 Data
to MP3DAT
Read ANN2:0 Ancillary
Bytes From MP3ANC
Reload MP3 Frame
Through MP3DAT
Load New MP3 Frame
Through MP3DAT
Ancillary Data?(1)
MPANC = 1?
Sync Error?
(1)
ERRSYN = 1?
Layer Error?(1)
ERRSYN = 1?
7654
3210
MPEN
MPBBST
CRCEN
MSKANC
MSKREQ
MSKLAY
MSKSYN
MSKCRC
Bit
Number
Bit
Mnemonic
Description
7MPEN
MP3 Decoder Enable Bit
Set to enable the MP3 decoder.
Clear to disable the MP3 decoder.



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