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C232HD USB 2.0 HI-SPEED TO UART CABLE Datasheet

Version 1.3

Document No.: FT_000430 Clearance No.: FTDI# 222

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Description

The USB 2.0 Hi-Speed to UART cable incorporates FTDI’s FT232H USB to UART interface IC device

which handles all the USB signalling and protocols. The cable provides a fast, simple way to connect

devices with 3.3 volt digital interfaces to USB.

The C232HD UART cable contains a small internal electronic circuit board, utilising the FT232H, which is

encapsulated into the USB connector end of the cable. The FT232H is a single channel USB 2.0 Hi-Speed

(480Mb/s) to UART IC. For full details, features and enhancement descriptions please refer to the FT232H

datasheet.

The digital interface of the cable is made up of ten individual wires which are terminated with single pole

connectors which can be connected next to each other on a male header. The cables digital interface logic

is 3.3 volts.

The USB side of the cable is USB powered and is USB 2.0 Hi-Speed compatible. The cable is 1.8m long

and supports a data transfer rate up to 12 Mbaud.

The C232HD UART cable requires USB drivers, available free from http://www.ftdichip.com , which are

used to make the FT232H in the cable appear as a virtual COM port (VCP). This then allows the user to

communicate with the USB interface via a standard PC serial emulation port (for example TTY).

Another FTDI USB driver, the D2XX, is used with application software to directly access the FT232H on

the cable though a DLL. This is illustrated in the Figure 1-1.

TTY

USB

Virtual COM Port

Software application access to USB via D2XX

USB

TTY

UART SIGNALS

UART SIGNALS

10 Female pin

headers

Connector

10 Female pin

headers

Connector

Figure 1-1 Using the C232HD UART Cable