AC97 CONTROLLER S3C2440A RISC MICROPROCESSOR
24-4
OPERATION FLOW CHART
System reset or Cold reset
Set GPIO and Release
INTMSK/SUBINTMSK bits
Enable Codec Ready interrupt
Disable Codec Ready interrupt
DMA operation or
PIO (Interrupt or Polling) operation
Controller off
Yes
No
No
Codec Ready interrupt ?Time out condition ?
Figure 24-3. AC97 Operation Flow Chart
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