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The USBRS232 cables are a family of USB to RS232 levels serial UART converter cables incorporating FTDI’s FT232RQ USB to serial UART interface IC device which handles all the USB signalling and protocols. The cables provide a fast, simple way to connect devices with a RS232 level serial UART interface to USB.
- Usb To Serial Adapter Prolific Chipset
- Usb To Serial Adapter Chipset
- Usb To Serial Converter Ftdi Chipset
Active7 years, 11 months ago
I have an USB <-> RS232 converter with no designation of producer on it. After plugging it into USB port on Windows Vista 64bit computer I chose an option to automatically find and install drivers from Windows Update site. Drivers (for USB Serial Converter and USB Serial Port) were successfully installed. In Device Manager, in section Universal Serial Bus controllers in context menu for USB Serial Converter in the field Manufacturer there's FTDI.
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How can I find out which type of chip (I guess it's one of those listed at http://www.ftdichip.com/Products/ICs.htm) is used in my converter?
EDIT
Hardware Id is USBVID_0403&PID_6001&REV_0400
ChipGenius reports this
Device Name: +USB Serial Converter
PnP Device ID: VID = 0403 PID = 6001 Serial Number: FTDIC6JT Revision: (Information not returned)
Device Type: Standard USB device - USB2.0 Full-Speed (USB1.1)
Chip Vendor: (No match record) Chip Part-Number: (No match record)
Product Vendor: USB Product Model: Serial Converter
Tools on Web: (N/A)
Piotr Dobrogost
Piotr DobrogostPiotr Dobrogost2,4831313 gold badges4747 silver badges7171 bronze badges
3 Answers
Try USBDeview to get the vendor ID, then look it up on a vendor list here or here
.
Or use Device manager to find the vendor ID
.
There is also a utility called chip genius referred to on this page.
MoabMoab52.6k1414 gold badges9898 silver badges161161 bronze badges
It appears there's no reliable way to find out what chipset is used. I wrote to FTDI's support giving VID and PID and they replied it's FT232B chipset. However, when I proposed to put mapping from VID,PID to chipset on their site Gordon Lunn from FTDI replied
VID/PID does not guarantee a chip type or how it is used. Customers can change these parameters in an EEPROM.
Much less one can find out what settings were applied; when I asked
Is it possible to know voltage level (3,3V or 5V)?
Usb To Serial Adapter Prolific Chipset
Gordon replied
Not without physically measuring them.
Piotr DobrogostPiotr Dobrogost2,4831313 gold badges4747 silver badges7171 bronze badges
There is an open source library -- libftdi [1] -- that can read the chip eeprom and decode the chip type from it's values, but this assumes no one messed with the eeprom data.
The eeprom has some extra IDs on it, and the library knows how to map those IDs to the right chip.
Off course this assumes the eeprom was not modified latter after the factory release, but for the general case this doesn't happen, so maybe it's enough for you.
Off course this assumes the eeprom was not modified latter after the factory release, but for the general case this doesn't happen, so maybe it's enough for you.
[1] http://www.intra2net.com/en/developer/libftdi/
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