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Document Reference No.: FT_000131
USB-COM422-PLUS1 Datasheet
Version 1.1
Clearance No.: FTDI# 94
1.2 LED Description
The USB-COM422-Plus1 uses three LEDs to indicate a valid link as well as data traffic according to the
following table:
LED Color
Yellow
Green
Red
Function
Enumerated
TxD Activity
RxD Activity
Description
ON when USB-COM422-Plus1 is configured and ready
Flashes when data is transmitted from the USB-COM422-Plus1 to the
attached RS422 device
Flashes when data is transmitted from the attached RS422 device to the
USB-COM422-Plus1
Table 1.1 LED Description
1.3 Block Diagram
USB B
Client
Connector
FTDI FT232R
USB Serial Bridge
RS422
Level Shifter
DE-9P
Connector
Figure 1.2 USB-COM422-Plus1 Block Diagram
1.3.1 Block description
USB B Client Connector
This connector provides the interface for connection to a USB Host or Hub port. The maximum cable
length is 5 meters, according to the USB 2.0 specification.
FTDI FT232R
The FTDI FT232R provides the USB-to-Serial conversion. Operating system device drivers are required in
order to work with the FT232R to provide the Virtual COM Port serial functionality.
RS422 Level Shifter
The RS422 level shifter converts the signals provided by the FT232R into the voltage levels required by
RS422 devices.
DE-9P Connector (Male)
The DE-9P connector is configured in an industry standard (TIA/EIA-574) pin-out to provide connection to
RS422 peripherals through standard cables. See section 3.1.2
Copyright ? 2010 Future Technology Devices International Limited
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相关代理商/技术参数
USB-COM422-PLUS-1 制造商:Future Technology Devices International (FTDI Chip) 功能描述:COMMUNICATION DEVICES PROVIDE A SIMPLE METHOD OF ADAPTING LEGACY SERIAL DEVICES WITH RS422 INTERFACES TO MODERN USB PORTS 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS422 1 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB FS TO RS422, 1 PORT, FT232R 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB FS TO RS422 CONV, 1 COM PORT, FT232R; ;ROHS COMPLIANT: YES
USB-COM422-PLUS2 功能描述:界面模块 USB HS to RS422 Conv Assembly 2 DB9 Ports RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度:
USB-COM422-PLUS-2 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB TO A DUAL INTERFACE RS422 LEVEL SERIAL UART ADAPTOR 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS422 2 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB HS TO RS422, 2 CH, FT2232H 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB HS TO RS422 CONV, 2 COM PORT, FT2232H; ;ROHS COMPLIANT: YES
USB-COM422-PLUS4 功能描述:界面模块 USB HS to RS422 Conv Assembly 4 DB9 Ports RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度:
USB-COM422-PLUS-4 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB TO A QUAD INTERFACE RS422 LEVEL SERIAL UART ADAPTOR 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS422 4 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB HS TO RS422, 4 CH, FT4232H 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB HS TO RS422 CONV, 4 COM PORT, FT4232H; ;ROHS COMPLIANT: YES
USB-COM485-PLUS1 功能描述:界面模块 USB to RS485 Convrtr Assembly 1 DB9 Port RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度:
USB-COM485-PLUS-1 制造商:Future Technology Devices International (FTDI Chip) 功能描述:COMMUNICATION DEVICES PROVIDE A SIMPLE METHOD OF ADAPTING LEGACY SERIAL DEVICES WITH RS485 INTERFACES TO MODERN USB PORTS 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS485 1 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB FS TO RS485, 1 PORT, FT232R 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB FS TO RS485 CONV, 1 COM PORT, FT232R; ;ROHS COMPLIANT: YES
USB-COM485-PLUS2 功能描述:界面模块 USB HS to RS485 Conv Assembly 2 DB9 Ports RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度: