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SC2200 Datasheet(PDF) 396 Page - National Semiconductor (TI) |
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SC2200 Datasheet(HTML) 396 Page - National Semiconductor (TI) |
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396 / 433 page ![]() www.national.com 396 Revision 3.0 Electrical Specifications (Continued) Figure 8-26. Multiword DMA Data Transfer Timing Diagram tM tN tL tj tK tD tI tE tZ tF tG tG tH t0 IDE_CS[1:0]# IDE_DATA[15:0] IDE_DATA[15:0] IDE_DREQ0 IDE_DACK0# IDE_IOR0# IDE_IOW0# Notes: 1) For Multiword DMA transfers, the Device may negate IDE_DREQ[0:1] within the tL specified time once IDE_DACK[0:1 is asserted, and reassert it again at a later time to resume the DMA operation. Alternatively, if the device is able to co tinue the transfer of data, the device may leave IDE_DREQ[0:1] asserted and wait for the host to reasse IDE_DACK[0:1]#. 2) This signal can be negated by the host to Suspend the DMA transfer in process. |
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