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QS820125JR Datasheet The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. QS820125JR Price Two of the control terms (CTO and CTl) are used to control the Preset/Reset of the macrocell's flip-flop. The Pre- set/Reset feature for each macrocell can also be disabled. Note that the Power-on Reset leaves all macrocells in the "zero" state when power is properly applied. The other four control terms (CT2-CT5) can be used to control the Output Enable of the macrocell's output buffers. The reason there are as many control terms dedicated for the Output Enable of the macrocell is to insure that all CooIRunner devices are PCI compliant. The macrocell's output buffers can also be always enabled or disabled. All CooIRunner devices also provide a Global 3-state (GTS) pin, which, when enabled and pulled Low, will 3-state all the outputs of the device. QS820125JR on stock Interrupt Before Reset To minimize data loss and speed system recovery/test, many applications interrupt the processor or reset only portions of the system before a processor hard reset is asserted. The extended setup time of the MAX6455/ MAX6456 MR input allows the same pushbutton (Figure 4) to control both the interrupt and hard reset functions. If the pushbutton is closed for less than 3.36s (typ), the
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