FT4232H datasheet(18/45 Pages) FTDI

Part #	FT4232H

Description	Quad High Speed USB to Multipurpose UART/MPSSE IC

PDF	45 Pages

Scroll/Zoom	100%

Manufacturer	FTDI [Future Technology Devices International Ltd.]

Direct Link	http://www.ftdichip.com

Logo

18 / 45 page

Document No.: FT_000060

FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC

Datasheet Version 2.2

Clearance No.: FTDI#78

4.3.2 RS422 Configuration

Figure 4.2 illustrates how the FT4232H can be configured as a dual RS422 interface. The FT4232H can

have all 4 channels connected as RS422, but only channel A and channel C are shown for clarity.

Figure 4.2 Dual RS422 Configuration

In this case both channel A and channel C are configured as UART operating at TTL levels and a level

converter device (full duplex RS485 transceiver) is used to convert the TTL level signals from the

FT4232H to RS422 levels. The PWREN# signal is used to power down the level shifters such that they

operate in a low quiescent current when the USB interface is in suspend mode.

FT4232H Datasheet(PDF) 18 Page - Future Technology Devices International Ltd.