參數(shù)資料
型號(hào): AT43USB355M-AU
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 Embedded Hub, ADC and PWM
中文描述: 8-BIT, MROM, 12 MHz, RISC MICROCONTROLLER, PQFP64
封裝: 1.40 MM, GREEN, PLASTIC, MS-026ACB, LQFP-64
文件頁數(shù): 78/115頁
文件大?。?/td> 610K
代理商: AT43USB355M-AU
78
AT43USB355
2603G–USB–04/06
Control Read Status
Response State
The Function Interface Unit receives an OUT token from the Host with a zero length DATA1
packet. The FIU responds with a NAK until TX_COMPLETE is cleared. The FIU will then ACK
the retried OUT token from the Host and assert an RX_OUT interrupt.
Control Write Data
Response State
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.
Hardware
Firmware
1.
OUT token from Host
2.
DATA1(0) from Host
3.
TX Complete = 0
a. If yes, ACK to Host
Set RX OUT
INT
b. If no, NAK to Host
4.
Read UISR
5.
Read CSR0
6.
Clear RX OUT, set Data End, set
Force Stall in H/FCAR0.
Note: A SETUP token will clear Data
End, therefore, it is not cleared by
FW in case Host retries.
Set UIAR[EP0 INTACK] to clear
interrupt source
7.
Hardware
Firmware
1.
OUT token from Host
2.
Put DATA0/DATA1 into FIFO
3.
ACK to Host
Set RX OUT
INT
4.
5.
Read UISR
6.
Read CSR0
7.
Read FIFO
8.
Clear RX OUT
If last data packet, set Force STALL,
set DATA END.
Set UIAR[EP0 INTACK] to clear the
interrupt source
9.
Repeat steps 1 through 9 until last DATA PACKET:
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