UART & USB Clock - Forums Re: UART & USB Clock Hi,


In case of USB clock using IMO, the clock syncs with the accurate clock of the USB host (like PC) and hence the clock tolerance reduces to 0.25%.

Mon, 02 May 2011 01:22:22 -0600
Re: UART & USB Clock  Thank you for your information, I will give it a try



Wed, 27 Apr 2011 14:01:41 -0600
Re: UART & USB Clock Hi,


Using IMO with 4% tolerance might not be of concern if  you are transmitting in bursts, that is, you send data with intervals.

However, if you are transmitting very long chunks of data in a given time, then the small time error might accumulate over a period of time and may result in a bit error which might manifest itself in the later part of the transmission.

Using 2 stop-bits might come in handy to get over this issue.

You can use many UART components as these are UDB based components.

Fri, 22 Apr 2011 13:15:10 -0600
Re: UART & USB Clock Hi,

Doing simple testing, there wasn't any error in 1 UART tx/rx.

It's a warning in Clock design that I was curios about, I intent to use 7 UARTs and 1 USB.

Can I ignore that warning?



Wed, 20 Apr 2011 16:23:45 -0600
Re: UART & USB Clock Arenosoft,


Were you able to see error in UART communication practially  while using IMO of 24MHz?

Sat, 16 Apr 2011 09:18:35 -0600