It won't know the frequency, it will send the BOOTME at 115200*24/27 = 102400 baud. But if you just wnat to know if the CPU is running that
will do. Just use a scope to check for activity. Tip: some USB to RS232 converters (e.g. using the SiLABS CP2102 or CP2103) can be programmed to almost any baud rate using the tools at the chip manufacturer's website. Try to get one of these... Regards, Arie de Muijnck ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andy Ngo Sent: Thursday, March 29, 2007 03:20 To: davinci-linux-open-source @linux.davincidsp.com Subject: UART boot clock Hi, I will bringing up our custom board in the next day to two when it's ready. Since everyone says the easiest test to do is put the board in "UART boot" mode and see if the CPU is cycling and UART is working. Our custom board is using a 24Mhz crystal oscillator instead of 27Mhz. Since we're using 24Mhz instead of 27Mhz, how does the Davinci know what divider value, etc to use to divide that clock down to 115.2 kbps to get the serial message "BOOTME" out correctly? Do I have to do anything special? Thanks. Regards, Andy -------------------------------------------------------- CONFIDENTIALITY NOTICE - This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain information that is confidential or legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that you must not read this transmission and that any disclosure, copying, printing, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error, please immediately notify Arie Muijnck by telephone or [EMAIL PROTECTED] and delete the original transmission and its attachments without reading or saving in any manner.
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