FT260Q-R datasheet(43/61 Pages) FTDI

部件名	FT260Q-R

功能描述	HID-class USB to UART/I2C Bridge IC

PDF	61 Pages

Scroll/Zoom	100%

制造商	FTDI [Future Technology Devices International Ltd.]

网页	http://www.ftdichip.com

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43 / 61 page

FT260 HID-CLASS USB TO UART/I2C BRIDGE IC

Version 1.1

Document No.: FT_001272 Clearance No.: FTDI#484

8.4

USB to RS422 Converter

Figure 8.4 Application Example 4 : USB to RS422 Converter

An example of using the FT260 as a USB to RS422 converter is shown in Figure 8.4. In this application,

two TTL to RS422 Level Converter ICs are used on the serial UART interface of the FT260 to convert the

TTL levels of the FT260 to RS422 levels.

There are many suitable level converter devices available. In Figure 8.4, the converter devices have an

enable control (EN) to activate the data lines. Setting DIO7 as SUSPOUT_N allows the FT260 to disable

the level converters when the system is in suspend. SUSPENDOUT_N is an active-low signal. The DIO0

and DIO12 of the FT260 can be configured as TX_LED and RX_LED. The FT260 can toggle LEDs with

these signals when the UART interface is transmitting and receiving data.

FT260Q-R 数据表(PDF) 43 Page - Future Technology Devices International Ltd.