[ICOM] USB on IC-7600

[Larry L. Hinton]

Good catch Alex,

I didn't dive into the investigation far enough even though I did have the
first PDF file you listed open. Albeit even this is a pretty obscure way to
find out. Hi. 

What's 38M bit per second difference between 1.1 and 2.0 among friends. All
rodents (mice) and keyboards (without hubs) still use slow speed USB chips.
However, you are right about any hubs and downstream ports. They are nearly
all 2.0/2.1 compliant and very soon will be 3.0.

Larry
K7YBZ

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Alex
Sent: Saturday, March 28, 2009 4:38 PM
To: 'ICOM Reflector'
Subject: [ICOM] USB on IC-7600

Virtual Com Port installation guide by Icom:

http://www.icom.co.jp/world/support/download/firm/IC-7600/1_00/IC-7600_Insta
llation_Guide_E_0.pdf

>From this guide you can see in the screenshots that Icom uses the CP2102
USB
to UART bride (Silicon Labs). Data sheet:

https://www.silabs.com/Support%20Documents/TechnicalDocs/cp2102.pdf

This data sheet states that this chip is USB 2.0 compliant. 

I doubt you can still find newly manufactured chips on the market that are
only USB 1.1 compliant. And even if it were USB 1.1 compliant only, you
would not be able to notice the difference. Besides, since it is a bridge
they use, it means the speed will drop after the bridge to a speed you
define in the VCP driver. The chain is as strong as the weakest link...

As far as the drivers are concerned, check with Silicon Labs:

https://www.silabs.com/products/mcu/Pages/USBtoUARTBridgeVCPDrivers.aspx

You will also find Linux and Mac OSX drivers there.

>From the revision history:

https://www.silabs.com/Support%20Documents/Software/CP210x_VCP_Win2K_XP_S2K3
_Release_Notes.txt

you can see that Vista x64 support has been added since version 4.4 (latest
5.4), which is good for me. :)

I hope this helps. Usual disclaimers apply. No Icom connection here.

73,
--Alex KR1ST
http://www.kr1st.com
http://www.airlinkexpres.org


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