Hi Kiste, So, accurate enough, and even for high speed ? Maybe my words were a bit complicated... In general, I did agree with your doubts, which is a complex language thing ;-)
I'm no USB expert, but I know that USB does have quite strict timing. Wikipedia says: Clock tolerance is 480.00 Mbit/s ±500 ppm, 12.000 Mbit/s ±2500 ppm, 1.50 Mbit/s ±15000 ppm. If I'm converting it right, that's 0,05% for 480MBit/s, 0,25% for 12MBit/s and 1,5% for 1.5Mbit/s. So, if you're accepting your devices to occasionally not work, you could try 12MBit. The maximum error of the mentioned oscillator is 1%. So, 1.5MBit/s can be guaranteed to work, while 12MBit/s only works if the device under test meets the typical specification. That's a matter of luck then. I wouldn't do that... Greets, Kiste -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
