参数资料
型号: USB2SERA10CFK
厂商: Freescale Semiconductor
文件页数: 2/28页
文件大小: 0K
描述: USB TO SERIAL BRIDGE
标准包装: 490
特点: USB 至 UART
通道数: 1,UART
FIFO's: 512 字节
规程: RS232,RS485,USB 2.0
电源电压: 2.7 V ~ 5.5 V
带自动流量控制功能:
安装类型: 表面贴装
封装/外壳: 24-VQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(5x5)
包装: 托盘
USB2SERA10 Data Sheet, Rev. 2
Drivers and GUI
Freescale Semiconductor
10
Where:
BitsPerByte — 11 for 2 stop bits or any parity option or 10 for 1 stop bit without parity
96 is the Serial buffer size in Bytes
In case the USB host does not request for data before the time out expires and there is no flow control option selected, previously
received data will be overwritten with the new received information.
2.6
Operation with commercial terminals for serial communication
Standard terminals for UART communication may have some limitations in the type of data that may be sent/received or some
protocol supports.
Known limitations are:
Binary option must be supported to communicate data that is not standard text
Communication Protocols (that is, Z modem with Crash recovery, X modem, Y modem, Kermit, and so on) may
include a protocol timeout that may not work in baud rates below 2400 bps
When using a standard terminal (HyperTerminal or TeraTerm for example) you must, make sure that the proper configuration
is selected to send the desired type of information.
3
Drivers and GUI
The USB2SER can work with the standard Windows driver or with a custom driver for expanded functionality. The Microsoft
Windows driver will enable a USB to COM port communication but without Hardware or Software Flow control features from
the Host PC to the device. To use this approach, it is possible to copy contents from Appendix C and save it as a file with
extension .inf. When the driver is requested the first time after connecting the device it is possible to select this INF file.
Freescale custom drivers for communication allow using any standard terminal or customer software to enable or disable
Hardware or Software flow control. The driver also comes with a set of functions to configure Maximum Current consumption
through the USB port, Product Strings, Vendor ID and Product ID. Password protects these settings. If any of the product strings
or VID/PID is changed, it is necessary to send the product for USB certification if the customer wants to use the USB logo.
3.1
Graphical user interface for product configuration
The GUI provided with the USB2SER is intended to allow the modification of the Bus Power configuration, Vendor ID, Product
ID and any of the manufacturer strings. This allows the customization of any product using this product. It is also possible to
password protect the device configuration to avoid future modifications after a product release.
96
*
_
BaudRate
e
BitsPerByt
Timeout
Overflow
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