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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SH7721 датащи(PDF) 38 Page - Renesas Technology Corp |
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SH7721 датащи(HTML) 38 Page - Renesas Technology Corp |
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38 / 1524 page  Rev. 3.00 Jan. 18, 2008 Page xxxviii of lxii Figure 9.39 Wait Timing for PCMCIA Memory Card Interface (TED[3:0] = B'0010, TEH[3:0] = B'0001, Software Wait = 1, Hardware Wait = 1)................................................................................................. 395 Figure 9.40 Example of PCMCIA Space Assignment (CS5BWCR.SA[1:0] = B'10, CS6BWCR.SA[1:0] = B'10) .................................... 396 Figure 9.41 Basic Timing for PCMCIA I/O Card Interface ....................................................... 398 Figure 9.42 Wait Timing for PCMCIA I/O Card Interface (TED[3:0] = B'0010, TEH[3:0] = B'0001, Software Wait = 1, Hardware Wait = 1)................................................................................................. 399 Figure 9.43 Timing for Dynamic Bus Sizing of PCMCIA I/O Card Interface (TED[3:0] = B'0010, TEH[3:0] = B'0001, Software Waits = 3) ............................. 399 Figure 9.44 Burst ROM (Clock Synchronous) Access Timing (Burst Length = 8, Wait Cycles inserted in First Access = 2, Wait Cycles inserted in Second and Subsequent Accesses = 1).............................. 400 Figure 9.45 Bus Arbitration Timing ........................................................................................... 403 Section 10 Direct Memory Access Controller (DMAC) Figure 10.1 Block Diagram of DMAC ....................................................................................... 408 Figure 10.2 DMA Transfer Flowchart........................................................................................ 425 Figure 10.3 Round-Robin Mode................................................................................................. 432 Figure 10.4 Changes in Channel Priority in Round-Robin Mode............................................... 433 Figure 10.5 Data Flow of Dual Address Mode........................................................................... 435 Figure 10.6 Example of DMA Transfer Timing in Dual Mode (Source: Ordinary Memory, Destination: Ordinary Memory)................................. 436 Figure 10.7 Data Flow in Single Address Mode......................................................................... 437 Figure 10.8 Example of DMA Transfer Timing in Single Address Mode ................................. 438 Figure 10.9 DMA Transfer Example in Cycle-Steal Normal Mode (Dual Address, DREQ Low Level Detection)......................................................... 439 Figure 10.10 Example of DMA Transfer in Cycle Steal Intermittent Mode (Dual Address, DREQ Low Level Detection)....................................................... 440 Figure 10.11 DMA Transfer Example in Burst Mode (Dual Address, DREQ Low Level Detection)....................................................... 440 Figure 10.12 Bus State when Multiple Channels are Operating................................................. 443 Figure 10.13 Example of DREQ Input Detection in Cycle Steal Mode Edge Detection............ 444 Figure 10.14 Example of DREQ Input Detection in Cycle Steal Mode Level Detection........... 445 Figure 10.15 Example of DREQ Input Detection in Burst Mode Edge Detection ..................... 445 Figure 10.16 Example of DREQ Input Detection in Burst Mode Level Detection .................... 446 Figure 10.17 Example of DMA Transfer End in Cycle Steal Mode Level Detection ................ 446 Figure 10.18 Example of BSC Ordinary Memory Access (No Wait, Idle Cycle 1, Longword Access to 16-Bit Device) ............................... 447 |
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