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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8SX/1663 数据表(PDF) 843 Page - Renesas Technology Corp |
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H8SX/1663 数据表(HTML) 843 Page - Renesas Technology Corp |
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843 / 1158 page  Section 16 USB Function Module (USB) Rev.1.00 Jun. 07, 2006 Page 791 of 1102 REJ09B0294-0100 (2) Resume Operation from Up-Stream If the USB bus enters the non-suspend state from the suspend state by resume signal output from up-stream, perform the operation as shown in figure 16.5. USB cable connected USB bus in suspend state Resume interrupts is requested from the up-stream. Suspend/resume interrupt occurs. (IFR2/SURSF = 1) RESUME Cancel software standby mode Clear SURSF in IFR2 to 0 Set SURSE in IER2 to 1 Clear SSRSME in IER2 to 0 Check if SURSS in IFR2 is cleared to 0 Software standby mode ? USB module stopped? Oscillation stabilization time has passed? No No No Yes Yes Yes Start USB operating clock oscillation Cancel USB module stop Return to normal state USB function Application Figure 16.5 Resume Operation from Up-Stream |
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