參數(shù)資料
型號(hào)： AT43USB320A-AC
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Full-speed USB Microcontroller with an Embedded Hub
中文描述： 8-BIT, 12 MHz, RISC MICROCONTROLLER, PQFP100
封裝： 14 X 14 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, MS-026AED, LQFP-100
文件頁數(shù)： 76/115頁
文件大?。?/td> 722K
代理商： AT43USB320A-AC
76
AT43USB320A
1443E–USB–4/04
Interrupt/Bulk IN
Transfers at Function
Endpoint
The firmware must first condition the endpoint through the Endpoint Control Register,
FENDP1/2_CNTR:
Set endpoint direction: set EPDIR
Set interrupt or bulk: EPTYPE = 11 or 10
Enable endpoint: set EPEN
The Function Interface Unit receives an IN token from the Host. The FIU responds with NAKs
until TX_PACKET_READY is set. The FIU then sends the data in the FIFO upstream, retrying
until it successfully receives an ACK from the host. Finally, the FIU clears the
TX_PACKET_READY bit and asserts a TX_COMPLETE interrupt.
1.
Read UISR
2.
Read FCSR1/2
3.
Clear TX_COMPLETE
If more data: fill FIFO, set TX Packet Ready
Wait for TX_COMPLETE interrupt
If no more data: set DATA END in FCAR1/2
4.
Set UIAR[FEP1/2 INTACK] to clear the interrupt source
Interrupt/Bulk OUT
Transfers at Function
Endpoint EP1 and 2
The firmware must first condition the endpoint through the Endpoint Control Register,
FENDP1/2_CNTR:
Set endpoint direction: clear EPDIR
Set interrupt or bulk: EPTYPE = 11 or 10
Enable endpoint: set EPEN
The Function Interface Unit receives an OUT token from the Host with a DATA packet. The
FIU places the incoming data into the FIFO, issues an ACK to the host, and asserts an
RX_OUT interrupt.
1.
Read UISR
2.
Read FCSR1/2
3.
Read FIFO
4.
Clear RX_OUT
If more data:
Wait for RX_OUT interrupt
If no more data: set DATA END
5.
Set UIAR[FEP1/2 INTACK] to clear the interrupt source
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB321 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed USB Hub/Function Microcontroller
AT43USB324AC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:KEYBOARD CONTROLLER
AT43USB324YC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:KEYBOARD CONTROLLER
AT43USB325 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB325_05 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Multimedia USB Keyboard Controller with Embedded Hub
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