[avr-chat] Problem with USART on AVR

[jack]

Hi All,

I am trying to run USART on ATTiny2313 at 12MHz but am seeing junk 
values in between at random. Sometimes some chars in the buffer are also 
skipped.
It's seen more often when i am transmitting anything from SRAM rather 
than FLASH.

I have lfuse set to 0xff ie.
CKSEL3..1 = 111  (For external Crystal Osc at 12Mhz)
CKSEL0  & SUT1..0 = 111 (For Slow rising power with External Crystal).
CKDIV8 = 1 (For disabling divide by 8).

If I transmit anything with the default setting of lfuse bit (0x64) with 
internal osc at 1 MHz then everything works fine.

Has anyone faced a similar issues or is there anything that I may be 
missing.

Thankx,
Jack