Hitachi SH7095 Hardware User Manual page 280

Note: Request detection timing
Figure 9.45 Example of Simultaneous Operation of 2 Channels
DREQ Pin Input Detection Timing in Burst Mode: In burst mode, the request detection timing
differs when DREQ input is detected by edge and when detected by level.
When DREQ input is detected by edge, once a request is detected, DMA transfers continue until
the conditions for ending the transfers are met, regardless of the state of the REQ pin thereafter.
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