Copyright © 2010 Future Technology Devices International Limited

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Document Reference No.: FT_000147

USB-COM232-PLUS2 Datasheet

Version 1.1

Clearance No.: FTDI# 96

The USB-COM232-PLUS2 uses five LEDs to indicate a valid link as well as data traffic according to the

following table:

LED

Colour

Function

Description

quantity

Yellow

Enumerated

ON when USB-COM-PLUS2 is configured and ready

1

Red

TxD Activity

Flashes when data is transmitted from the

the attached RS232 device

2

Green

RxD Activity

Flashes when data is transmitted from the attached RS232 device to the

USB-COM232-PLUS2

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Table 1.1 – LED Description

FTDI FT2232H

USB Serial Bridge

RS232

Level Shifter

USB miniB

Client

Connector

DE-9P

Connector

RS232

Level Shifter

DE-9P

Connector

Figure 1.2 USB-COM232-PLUS2 Block Diagram

1.3.1 Block description

USB miniB 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 FT2232H

The FTDI FT2232H provides the USB-to-Serial conversion. Operating system device drivers are required

in order to operate with the FT2232H to provide dual Virtual COM Port serial functionality.

RS232 Level Shifter

The RS232 level shifter converts the signals provided by the FT2232H into the voltage levels required by

RS232 devices.

DE-9P Connector (Male)

The DE-9P connector is configured in an industry standard (TIA/EIA-574) pin-out to provide connection to

RS232 peripherals through standard cables. See section 3.1.2