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SH7041A Datasheet(PDF) 297 Page - Renesas Technology Corp

Part # SH7041A
Description  Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)
PDF  923 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7041A Datasheet(HTML) 297 Page - Renesas Technology Corp

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Burst Mode, Dual Address, and Edge Detection: In burst mode with dual address and edge
detection,
DREQ sampling is conducted only on the first cycle.
In figure 11.23, DMAC transfer begins, at the earliest, three cycles after the timing of the first
sampling. Thereafter, DMAC transfer continues until the end of the data transfer count set in the
TCR.
DREQ sampling is not conducted during this period. Therefore, DRAK is output on the first
cycle only.
When DMAC transfer is resumed after being halted by a NMI or address error, be sure to reinput
an edge request. The remaining transfer restarts after the first DRAK output.
The DACK output period in burst mode is the same as in cycle steal mode.



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