參數(shù)資料
型號(hào)： AT43USB326-AC
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, MROM, 12 MHz, RISC MICROCONTROLLER, PQFP48
封裝： 7 X 7 MM, 1.40 MM THICKNESS, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48
文件頁(yè)數(shù)： 52/102頁(yè)
文件大小： 511K
代理商： AT43USB326-AC
52
AT43USB326
3313D–USB–04/06
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
相關(guān)PDF資料
PDF描述
AT43USB326-AU Multimedia USB Keyboard Controller with Embedded Hub
AT43USB351M-AC Full-speed/Low-speed USB Microcontroller with ADC and PWM
AT43USB353M-AC Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355E-AC Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355E-AU Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
AT43USB351M_04 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed/ Low-speed USB Microcontroller with ADC and PWM
AT43USB351M-AC 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed/ Low-speed USB Microcontroller with ADC and PWM
AT43USB353M 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
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