The interrupt request signal for on-chip peripheral module specified as activation source of DMAC cannot be used as the interrupt request signal to CPU because the signal is not inputted in the interrupt controller (INTC).
If you want this interrupt request signal to be used as the interrupt signal to CPU, please do either of following processing after transferring DMAC.
•By changing the setting for resource select bit (RSn) of DMAC channel control register (CHCR), it doesn’t select as the activation source of DMAC.
•By setting DMAC master enable bit (DME) of DMA operation register (DMAOR) to “0”, set DMAC to the operation disabled.
Moreover, DMAC has the function that generates the interrupt signals after transferring is completed for the specified time.
It can be activated by setting the interrupt enable bit (IEn) of DMA channel control register (CHCR) to “1”.
|SH7052, SH7053, SH7054|
|SH7040, SH7041, SH7042, SH7043, SH7044, SH7045|
|SH7014, SH7016, SH7017|