參數(shù)資料
型號(hào)： AT43USB325E-AU
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Multimedia USB Keyboard Controller with Embedded Hub
中文描述： 8-BIT, 12 MHz, RISC MICROCONTROLLER, PQFP64
封裝： 1.40 MM HEIGHT, GREEN, PLASTIC, MS-026ACB, LQFP-64
文件頁(yè)數(shù)： 69/109頁(yè)
文件大?。?/td> 643K
代理商： AT43USB325E-AU
69
3355C–USB–4/05
AT43USB325
8.1.8
Control Write Status Response State
The Function Interface Unit receives an IN token from the Host. The FIU responds with a zero
length DATA1 packet, retrying until it receives an ACK back from the Host. The FIU then asserts
a TX_COMPLETE interrupt.
8.1.9
Interrupt/Bulk IN Transfers at Function End-point
The firmware must first condition the end-point through the End-point Control Register, FEND-
P1/2/3_CNTR:
Set end-point direction: set EPDIR
Set interrupt or bulk: EPTYPE = 11 or 10
Enable end-point: 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.
2.
3.
Read UISR
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 FCAR1/2/3
4.
Set UIAR[FEP1/2/3 INTACK] to clear the interrupt source
Hardware
Firmware
1.
IN token from Host
2.
Send DATA1(0)
3.
ACK from Host
Set TX Complete
→
INT
4.
5.
Read UISR
6.
Read CSR0
7.
Clear TX COMPLETE, clear Data
End, set Force STALL in CAR0
Set UIAR[EP0 INTACK] to clear
the interrupt source
8.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB326 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB326_06 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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AT43USB326-AU 功能描述:USB 接口集成電路 USB KEYBOARD FOR LOGITECH - IND TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
AT43USB351M 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
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