[arm-allstar] CM108 USB sound FOB

Daniel Bernhardt daniel at dbernhardt.com
Mon Aug 15 13:01:25 EST 2016

Hi Doug,

I must have been really obsessed with the term  "CM108" to get the name of the 
other chip that wrong. The chip I mean is named HS100B. It is also produced by 
C-Media but lacks a lot of features. Here is a link to the chip: 
I can't find the datasheet right now, sorry.

Attached to this email you'll find a picture of one of the USB sound FOBs 
supposedly equipped with a CM108 chip. I took it a couple days ago to write a 
negative review at amazon. Not that it matters though.

I'm on vacation right now and left the boards at home. I will send you the 
complete "lsusb -v" output as soon as I get home.

Finding a USB sound FOB with CM119A seems even harder. I went with Peters 
suggestion and ordered the boards from ebay.


On Monday 15 August 2016 10:50:41 Doug Crompton via arm-allstar wrote:

> Daniel,
>  Tell us more about the "HM108" I can't seem to find any data on that chip.
>  Is it a clone? Counterfeit? Send a link to where you are buying it on
>  Amazon?> 
> Any of the CM108xx and CM119A  chips should work. The problem is often a
> different vendor or product ID which is rejected by the software.
> The DMK-URI uses the CM119A.
> If you have those boards that do not work install one and do 'lsusb' at the
> Linux prompt. What do you see? For DMK-URI this is what you would see -
> [root at 41139-Mobile allmon2]# lsusb
> Bus 001 Device 005: ID 0d8c:013a C-Media Electronics, Inc.
> 73 Doug
> http://www.crompton.com/hamradio
> To: arm-allstar at hamvoip.org
> Date: Mon, 15 Aug 2016 10:26:11 +0200
> Subject: [arm-allstar] CM108 USB sound FOB
> From: arm-allstar at hamvoip.org
> CC: daniel at dbernhardt.com
> Hello everyone,
> I'm experimenting with AllStar Link and want to setup a couple of nodes in 
> Germany. Unfortunately it is almost impossible to get a USB sound FOB with a 
> CM108 chip. I already ordered 7 different USB sound FOBs off of amazon, all 
> claiming to have a CM108 chip, only to find out all of them had the cheaper 
> HM108 chip. 
> Can anyone provide me with a name or product ID of a USB sound FOB that 
> has a CM108 chip or even better a link where to buy it? Preferably inside 
> Europe but Asia is OK also.
> I'm really looking forward to GPIO support for the RPi3.
> Keep up the good work of bringing AllStar Link to the RPi/BBB.
> Best Regards,
> Daniel, DK1DB
> _______________________________________________
> arm-allstar mailing list
> arm-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> Visit the BBB and RPi2 web page - http://hamvoip.org

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