參數(shù)資料
型號(hào): AT43USB325E-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, 12 MHz, RISC MICROCONTROLLER, PQFP64
封裝: 1.40 MM HEIGHT, PLASTIC, MS-026-ACB, LQFP-64
文件頁(yè)數(shù): 70/109頁(yè)
文件大?。?/td> 643K
代理商: AT43USB325E-AC
70
3355C–USB–4/05
AT43USB325
8.1.10
Interrupt/Bulk OUT Transfers at Function End-point EP1, 2 and 3
The firmware must first condition the end-point through the End-point Control Register, FEND-
P1/2/3_CNTR:
Set end-point direction: clear EPDIR
Set interrupt or bulk: EPTYPE = 11 or 10
Enable end-point: 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.
2.
3.
4.
Read UISR
Read FCSR1/2/3
Read FIFO
Clear RX_OUT
If more data:
Wait for RX_OUT interrupt
If no more data: set DATA END
Set UIAR[FEP1/2/3 INTACK] to clear the interrupt source
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