AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 67

• Manufacturer Part Number: AT83C51SND1C_03
• Description: Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
• Manufacturer: ATMEL [ATMEL Corporation]

4109E–8051–06/03
Figure 47. MP3 Interrupt Service Routine Flow
Note:
1. Test these bits only if needed (unmasked interrupt).
Reload MP3 Frame
Through MP3DAT
Synchro Error
Data Request
Write MP3 Data
to MP3DAT
Handler
Handler
Load New MP3 Frame
Ancillary Data?
Through MP3DAT
MP3 Decoder
Data Request?
Layer Error?
Read MP3STA
MPFREQ = 1?
Sync Error?
ERRSYN = 1?
ERRSYN = 1?
MPANC = 1?
CRC Error
Handler
ISR
(1)
(1)
(1)
AT8xC51SND1C
Read ANN2:0 Ancillary
Bytes From MP3ANC
Ancillary Data
Layer Error
Handler
Handler
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