參數(shù)資料
型號: S80C154-20R
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 20 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 47/109頁
文件大小: 10824K
代理商: S80C154-20R
290
7593L–AVR–09/12
AT90USB64/128
Figure 24-4. Example with OUT data banks.
24.14 IN Pipe management
The Pipe must be configured first.
When the Host requires data from the device, the firmware has to determine first the IN mode to
use using the INMODE bit:
INMODE = 0. The INRQX register is taken in account. The Host controller will perform
(INRQX+1) IN requests on the selected Pipe before freezing the Pipe. This mode avoids to
have extra IN requests on a Pipe
INMODE = 1. The USB controller will perform infinite IN request until the firmware freezes the
Pipe
The IN request generation will start when the firmware clear the PFREEZE bit.
Each time the current bank is full, the RXIN and the FIFOCON bits are set. This triggers an inter-
rupt if the RXINE bit is set. The firmware can acknowledge the USB interrupt by clearing the
RXIN bit. The Firmware read the data and clear the FIFOCON bit in order to free the current
OUT
DATA
(bank 0)
ACK
TXOUT
FIFOCON
HW
Example with 1 OUT data bank
write data from CPU
BANK 0
Example with 2 OUT data banks
SW
OUT
DATA
(bank 0)
ACK
TXOUT
FIFOCON
write data from CPU
BANK 0
SW
OUT
DATA
(bank 1)
ACK
write data from CPU
BANK 0
write data from CPU
BANK 1
SW
HW
write data from CPU
BANK0
Example with 2 OUT data banks
OUT
DATA
(bank 0)
ACK
TXOUT
FIFOCON
write data from CPU
BANK 0
SW
write data from CPU
BANK 1
SW
HW
write data from CPU
BANK0
OUT
DATA
(bank 1)
ACK
相關PDF資料
PDF描述
S83C154CXXX-36R 8-BIT, MROM, 36 MHz, MICROCONTROLLER, PQCC44
S80C52TXXX-12 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQCC44
SC80C32EXXX-30SB 8-BIT, 30 MHz, MICROCONTROLLER, CDIP40
S80C32-25SHXXX:RD 8-BIT, 25 MHz, MICROCONTROLLER, PQCC44
S80C52XXX-20:RD 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQCC44
相關代理商/技術參數(shù)
參數(shù)描述
S80C154-30 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
S80C154-36 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
S80C154-L16 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
S80C186 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:CMOS High-Integration 16-Bit Microprocessors
S80C186-12 制造商:Advanced Micro Devices 功能描述:MPU 80C86 CISC 16-Bit CMOS 12MHz 80-Pin PQFP