APPLICATION AREAS :
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Prototype development
USB ISDN and ADSL modems
USB interface for digital cameras
USB interface for MP3 players
High-speed USB instrumentation
USB smart-card readers
Set top box (STB) PC-USB interface
USB hardware modems
USB wireless modems
USB bar code readers
1.0 GENERAL DESCRIPTION
The DLP-2232MSPF provides a cost-effective, microcontroller-based method of interfacing an
electronic peripheral to a host computer via USB.
To send data from the peripheral to the host computer, the microcontroller simply writes data into the
FT2232H on its RXD pin at 1M baud. Commands and data sent from the host are transferred serially
on the TXD pin.
By using FTDI’s Virtual COM Port Drivers, the peripheral looks like a standard COM port to the
application software. The latest versions of the drivers are available for download from DLP Design’s
website at www.dlpdesign.com .
2.0 DRIVER SOFTWARE
FTDI's VCP (Virtual COM Port) driver-executable files are provided royalty free on the condition that
they are used only with designs incorporating an FTDI device (i.e. the FT2232H on the
DLP-2232MSPF). The latest version of the drivers can be downloaded from www.dlpdesign.com or
www.ftdichip.com .
The VCP driver download file is a combined set of drivers for Windows 7, Windows Vista and
Windows 2000/XP. Unzip the file to a blank floppy disk or folder on your PC. (The drivers can coexist
on the same floppy disk or folder since the INF files determine which set of drivers to load for each
operating system version.) Once loaded, the VCP drivers allow the application software running on
your host PC to communicate with the DLP-2232MSPF as though it were connected to a COM
(RS-232) port.
In addition to VCP drivers, FTDI's D2XX direct drivers offer an alternative solution to the VCP drivers
that allow application software to interface with the DLP-2232MSPF using a DLL instead of a Virtual
COM Port. The architecture of the D2XX drivers consists of a Windows WDM driver that communi-
cates with the device via the Windows USB stack and a DLL that interfaces the application software
(written in VC++, C++ Builder, Delphi, VB, etc.) to the WDM driver.
The D2XX direct drivers add support for simultaneous access and control of multiple FT2232H
devices. The extended open function (FT_OpenEx) allows the device to be opened by either its
product description or serial number, both of which can be programmed to be unique. The List
Rev. 1.1 (November 2011)
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