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2746

13 Posts
Posted - 10 Apr 2003 :  19:39:54  Show Profile  Email Poster
What's the maximum buad rate that the Comm ports on Graphics Master can handle?

ctacke

877 Posts
Posted - 11 Apr 2003 :  10:55:05  Show Profile  Email Poster
All ADS Devices support rates up to 115,200.
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akidder

1519 Posts
Posted - 06 Oct 2004 :  10:26:29  Show Profile  Email Poster
The XScale PXA255 and the quad UART ADS uses on its products supports up to 230400 baud rate on all serial ports. The XScale Bluetooth UART supports up to 921600 baud.

The operating system determines what baud rates are supported. Windows CE supports conventional baud rates up to 115200 baud. Linux supports standard baud rates, plus direct control of the hardware clock divisor to allow non-standard baud rates.

Note that baud rate is not the same as sustained throughput, which varies depending on the load on the system, CPU speed, and other factors. Higher baud rates almost always require hardware handshaking to ensure that data is not lost.


Further reading: Serial communications (topic index)
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