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H8/3003 数据表(PDF) 202 Page - Renesas Technology Corp |
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H8/3003 数据表(HTML) 202 Page - Renesas Technology Corp |
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202 / 715 page ![]() Bit 6—Data Transfer Size (DTSZ): Selects the data size of each transfer. Bit 6 DTSZ Description 0 Byte-size transfer (Initial value) 1 Word-size transfer Bit 5—Data Transfer Increment/Decrement (DTID): Selects whether to increment or decrement the memory address register (MAR) after a data transfer in I/O mode or repeat mode. Bit 5 DTID Description 0 MAR is incremented after each data transfer (Initial value) • If DTSZ = 0, MAR is incremented by 1 after each transfer • If DTSZ = 1, MAR is incremented by 2 after each transfer 1 MAR is decremented after each data transfer • If DTSZ = 0, MAR is decremented by 1 after each transfer • If DTSZ = 1, MAR is decremented by 2 after each transfer MAR is not incremented or decremented in idle mode. Bit 4—Repeat Enable (RPE): Selects whether to transfer data in I/O mode, idle mode, or repeat mode. Bit 4 Bit 3 RPE DTIE Description 0 0 I/O mode (Initial value) 1 1 0 Repeat mode 1 Idle mode Operations in these modes are described in sections 8.4.2, I/O Mode, 8.4.3, Idle Mode, and 8.4.4, Repeat Mode. 184 |
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