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參數(shù)資料
| 型號(hào)： | TH6503 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | USB Low-Speed Interface |
| 中文描述： | USB低速接口 |
| 文件頁數(shù)： | 15/24頁 |
| 文件大?。?/td> | 342K |
| 代理商： | TH6503 |
15
TH6503 USB Low-Speed Interface
Flowchart for
Programming the
TH6503
Main Program
Figure 15 shows the main order of events of the USB specific part of firmware for the
microcontroller. The bits located in the StatusRegister mark the event. Depending on these bits the
firmware must branch.
Figure 15. Flowchart for Main Program (using TH6503 in Interrupt mode)
Initialisation
SCK=0;SIN=1;
SDI=0
OUT Done
EP0 IN Done
EP1/2 IN Done
No
SDO=1
No
Yes
Read CntOutRegister
and OUT FIFO
Yes
Data to send
Yes
No
Yes
Data to send
Yes
Yes
Reaction (depends
on the received Data)
Write next Control
Byte(s) to
IN FIFO
Write next Device
Data to
IN FIFO
Read
StatusRegister
No
No
USB Active
Yes
Reset Suspend
Timer
No
Resume Detect
Reset SUS Bit in the
BridgeConfigRegister
Yes
No
USB Reset
Yes
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