at85c51snd3b ATMEL Corporation, at85c51snd3b Datasheet - Page 198

• Manufacturer Part Number: at85c51snd3b
• Description: Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
• Manufacturer: ATMEL Corporation

Figure 91. Data Stream Transmission Flows
198
AT85C51SND3B
write 16 data to MMDAT
write 8 data to MMDAT
Start Transmission
STOP Command
a. Polling mode
Transmission
Data Stream
No More Data
FIFO Empty?
FIFO Filling
FIFO Filling
DATEN = 1
HFRS = 1?
To Send?
Send
write 16 data to MMDAT
Unmask FIFO Empty
Start Transmission
Data Stream
Initialization
FIFO Filling
DATEN = 1
HFRM = 0
b. Interrupt mode
write 8 data to MMDAT
Transmission ISR
STOP Command
Mask FIFO Empty
Data Stream
No More Data
FIFO Empty?
FIFO Filling
HFRI = 1?
To Send?
HFRM = 1
Send
7632C–MP3–11/06