STA013 little problem
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2 posts • Page 1 of 1
STA013 little problem
by spazio » Sat Mar 10, 2007 7:01 am
Hi! I'm building a player with sta013 atmega128 and MMC card. It sounds fine, but there is a problem with some files. sta013 requests data, mega sends some (1 frame or 1 sta013 buffer may be) and than sta013 outputs clock signal of 14,7something MHz on it's DATA_REQ pin only!? Mega never exits it's interrupt routine, so it also stops running. Only a restart from power fixes it. Why some files play fine everitime, and some 1 of 10? It's not the speed Mega sends data quick enough.
- spazio
- Posts: 2
- Joined: Sat Mar 10, 2007 6:12 am
by nzmike » Sun Sep 02, 2007 8:14 pm
The DATA_REQ line can bet set as a clock in a different operational mode (STA013 master mode). This can be changed by writing to configuration registers on the STA013. Double check and make sure it is set to the right mode.
- nzmike
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- Joined: Sun Sep 02, 2007 8:10 pm
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