gt; Hopefully this answers your question..
>
> Pei
>
> -Original Message-
> From: Thomas Chen <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> <[EMAIL PROTECTED]>
> Date: Tuesday, January 14, 2003 9:05 PM
> Subject: [linux-usb-devel] is 1 ms SOF interrupt ABSOLUTELY ne
question..
Pei
-Original Message-
From: Thomas Chen <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
<[EMAIL PROTECTED]>
Date: Tuesday, January 14, 2003 9:05 PM
Subject: [linux-usb-devel] is 1 ms SOF interrupt ABSOLUTELY necessary???
>i am working on an embeded system using S
>
> thanks but why 6MIPS and 48MIPS how are those number derived?
>
> i assumed for 12Mbps full speed??? that is about 1.5MByteps how
> does it need 48Mips???
>
> thanks if you can elaborate how you come up with those number??? thanks
>
>
http://www.sxlist.com/techref/ubicom/lib/io/d
thanks but why 6MIPS and 48MIPS how are those number derived?
i assumed for 12Mbps full speed??? that is about 1.5MByteps how
does it need 48Mips???
thanks if you can elaborate how you come up with those number??? thanks
Michael Hetherington wrote:
>
> You do not have to keep
You do not have to keep the rate of 1 ms exactly. Just do not allow idle
periods of > 3m. It will suspend devices. Never worked with SL part. But if
you want to byte-bang USB you need at least 6MIPS MCU for low-speed and
48MIPS for full speed. Well, and some external logic of course. Worked for
m
i am working on an embeded system using SL811
the 1MS interrupt is just eating up all the cpu cycle
(by the way, can any one provide some input on MINIMUM cpu horse
power needed to operate USB???)
the question is whether it is possible to slow down this
interrupt, say to 5 MS instead of 1 MS???
