參數(shù)資料
型號: TUSB3410VF
英文描述: BUS CONTROLLER
中文描述: 總線控制器
文件頁數(shù): 72/92頁
文件大?。?/td> 317K
代理商: TUSB3410VF
11
2
If descriptor block is auto-execution firmware, the bootcode loads it and releases the control to the
firmware.
If descriptor block is
end of header
, the bootcode stops searching.
Set header pointer to the beginning of the binary firmware in I
2
C EEPROM.
Enable global and USB interrupts and set connection bit to 1.
Set global interrupt bit. EA = 1.
Set internal interrupt bit. EX0 = 1.
Set connection bit. CONT = 1.
Wait for any interrupt events until Get DEVICE DESCIPTOR setup packet arrives.
Suspend interrupt
Set IDLE = 1 to enter suspend mode. USB reset wakes up the microcontroller.
Resume interrupt
Bootcode wakes up and waits for new USB requests.
Reset interrupt
Call UsbReset() routine.
Setup interrupt
Bootcode process the request.
Reboot
If Reboot=1, disconnect from USB and restart at address 0x0000.
Download firmware from I
2
C EEPROM
Disable global interrupt. Reset EA = 0.
Load firmware to xdata space if available.
Download firmware from USB.
If no firmware in I
2
C EEPROM, host downloads firmware via output endpoint 1.
In the first data packet to output endpoint 1, host driver add 3 bytes before the application firmware in
binary format. These three bytes are LSB and MSB of firmware size and then arithmetic checksum of
binary firmware.
Release control to firmware.
Update USB configuration and interface number.
Release control to application firmware.
Application firmware
Either disconnect from bus or continue responding to USB requests.
11.3 Default Bootcode Settings
The bootcode has its own predefined device, configuration, and string descriptors. These default descriptors should
be used in evaluation only. They should not be used in end-user product.
相關(guān)PDF資料
PDF描述
TV2050MK5 TV_ICs:
TVGA9000 LOW COST VGA CONTROLLER
TVP3020-200PCE Video DAC with Color Palette (RAMDAC)
TVP3025-220PCE Video DAC with Color Palette (RAMDAC)
TVR1B TOSHIBA Fast Recovery Diode Silicon Diffused Type
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TUSB3410VFG4 功能描述:USB 接口集成電路 RS232/IrDA Ser-to-USB Converter 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
TUSB4020BIPHP 功能描述:USB Hub Controller USB 2.0 USB Interface 48-HTQFP (7x7) 制造商:texas instruments 系列:- 包裝:管件 零件狀態(tài):有效 協(xié)議:USB 功能:集線器控制器 接口:USB 標準:USB 2.0 電壓 - 電源:1.1V,3.3V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 封裝/外殼:48-TQFP 裸露焊盤 供應(yīng)商器件封裝:48-HTQFP(7x7) 標準包裝:250
TUSB4020BIPHPR 功能描述:IC USB 2.0 2PORT HUB IND 48HTQFP 制造商:texas instruments 系列:- 包裝:剪切帶(CT) 零件狀態(tài):在售 協(xié)議:USB 功能:集線器控制器 接口:USB 標準:USB 2.0 電壓 - 電源:1.1V,3.3V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 封裝/外殼:48-TQFP 裸露焊盤 供應(yīng)商器件封裝:48-HTQFP(7x7) 標準包裝:1
TUSB4020BIPHPRQ1 功能描述:USB Hub Controller USB 2.0 USB Interface 48-HTQFP (7x7) 制造商:texas instruments 系列:- 包裝:剪切帶(CT) 零件狀態(tài):有效 協(xié)議:USB 功能:集線器控制器 接口:USB 標準:USB 2.0 電壓 - 電源:1.1V,3.3V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 封裝/外殼:48-TQFP 裸露焊盤 供應(yīng)商器件封裝:48-HTQFP(7x7) 標準包裝:1
TUSB4020BPHPEVM 功能描述:TUSB4020B - Interface, USB 2.0 Hub Evaluation Board 制造商:texas instruments 系列:- 零件狀態(tài):有效 主要用途:接口,USB 2.0 集線器 嵌入式:- 使用的 IC/零件:TUSB4020B 主要屬性:2 通道(雙路) 輔助屬性:LED 狀態(tài)指示器 所含物品:板 標準包裝:1