multiple CP2103-EBs USB-to-RS232

Do you have a question? Post it now! No Registration Necessary

Translate This Thread From English to

Threaded View
starfire Contact options for registered users 's Avatar (by Gravatar) posted on
April 10, 2008, 1:45 pm
rate this thread
Reply to this post Reply Tag this thread to save it in your account Save Printer-friendly version of this post Print


Hi all -

I got the Silicon Laboratories CP2103-EB inteface kit from DigiKey.  This is
an adapter from a standard USB connection to provide a standard RS232
interface.  It comes with an interface adapter board, a USB cable, an RS232
cable, and a driver disk.  The kit works great and is reasonably priced.

I have been having a problem in trying to use two of these kits with my
laptop simultaneously, though.  When the first kit is plugged in, it is
correctly enumerated and the Hardware Profile shows a COM port available.
When the second kit is plugged into the USB, it has an error.  If I exchange
the two kits in plug-in order, the problem follows the second kit.

Has anyone used two of these kits in the same system?  Is there a trick to
getting it to peacefully coexist with multiple units?

I've tried the Silicon Labs website.  They are no help at all.  I have tried
sending e-mails on multiple occassions and have had no returns.

Any help would be appreciated.


Dave




Other Related Threads
starfire Contact options for registered users 's Avatar (by Gravatar) posted on
April 12, 2008, 3:26 pm
Permalink
Reply to this post Reply Tag this thread to save it in your account Save Printer-friendly version of this post Print
Re: multiple CP2103-EBs USB-to-RS232


Since there has been no response on this issue, I assume no one else is
using these devices in this kind of a configuration.

My solution to the problem was to have to get a 2-port com device interface
attachment which plugs into a single USB port.  The cost is just a little
higher than one of the Silicon Laboratories CP2103-EB devices, also.  This
has the added benefit of freeing up one USB port while connecting one or two
RS232 devices.

I am totally disappointed in the lack of response from Silicon Laboratories
on this issue.  I will never use any of their products in the future, either
at home or at work.  I will also recommend to anyone else to not use their
products.  You will not get any technical support...


Dave

Quoted text here. Click to load it



Other Related Threads
Peter Camilleri Contact options for registered users 's Avatar (by Gravatar) posted on
May 1, 2008, 10:01 pm
Permalink
Reply to this post Reply Tag this thread to save it in your account Save Printer-friendly version of this post Print
Re: multiple CP2103-EBs USB-to-RS232


Did you try changing the serial number of the second CP2103? Sci Labs has a
utility called SetIDs I think that lets you set the enumeration pareters be
set.

Quoted text here. Click to load it



starfire Contact options for registered users 's Avatar (by Gravatar) posted on
May 1, 2008, 11:23 pm
Permalink
Reply to this post Reply Tag this thread to save it in your account Save Printer-friendly version of this post Print
Re: multiple CP2103-EBs USB-to-RS232


I did not know of that utility.  I did try to change the com port settings
from Windows by changing the properties but it was unsuccessful.

I have since then purchased a dual-port serial interface which runs directly
from the USB port.  It works quite well.  It also frees up a USB port, which
is additionally beneficial.

Thanks.


Dave

Quoted text here. Click to load it



Site Timeline