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AT83SND2CMP3B bảng dữ liệu(PDF) 147 Page - ATMEL Corporation

tên linh kiện AT83SND2CMP3B
Giải thích chi tiết về linh kiện  Single-Chip Flash Microcontroller with MP3 Decoder with Full Audio Interface
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
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4341F–MP3–03/06
AT8xC51SND2C/MP3B
may reset the data controller and its internal state machine by setting and clearing the DCR bit in
MMCON2 register.
This time-out may be disarmed after receiving 8 data (F1FI flag set) or after receiving end of
frame (EOFI flag set) in case of block length less than 8 data (1, 2 or 4).
18.6.4.3
Data Reading
Data is read from the FIFO by reading to MMDAT register. Each time one FIFO becomes full
(F1FI or F2FI set), user is requested to flush this FIFO by reading 8 data.
Figure 18-18.
Data Stream Reception Flows
Data Stream
Reception
FIFO Full?
F1FI or F2FI = 1?
FIFO Reading
read 8 data from MMDAT
No More Data
To Receive?
a. Polling mode
Data Stream
Initialization
Data Stream
Reception ISR
FIFO Reading
read 8 data from MMDAT
Send
STOP Command
No More Data
To Receive?
b. Interrupt mode
FIFO Full?
F1FI or F2FI = 1?
Unmask FIFOs Full
F1FM = 0
F2FM = 0
Send
STOP Command
Mask FIFOs Full
F1FM = 1
F2FM = 1



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