AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 120

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

Figure 85. Data Stream Transmission Flows
120
AT8xC51SND1C
write 16 data to MMDAT
write 8 data to MMDAT
Start Transmission
STOP Command
a. Polling mode
F1EI or F2EI = 1?
Transmission
Data Stream
No More Data
FIFO Empty?
FIFOs Filling
FIFO Filling
DATEN = 1
DATEN = 0
To Send?
Send
write 16 data to MMDAT
Unmask FIFOs Empty
Start Transmission
Data Stream
Initialization
FIFOs Filling
DATEN = 1
DATEN = 0
F1EM = 0
F2EM = 0
b. Interrupt mode
write 8 data to MMDAT
Transmission ISR
STOP Command
Mask FIFOs Empty
F1EI or F2EI = 1?
Data Stream
No More Data
FIFO Empty?
FIFO Filling
To Send?
F1EM = 1
F2EM = 1
Send
4109E–8051–06/03