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FIN324C データシート(PDF) 1 Page - Fairchild Semiconductor |
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FIN324C データシート(HTML) 1 Page - Fairchild Semiconductor |
1 / 4 page www.fairchildsemi.com © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev. 1.0.3 • 8/22/07 AN-6047 FIN324C Reset and Standby Summary The FIN324C is designed with both a reset and a standby pin. These two pins are similar in function, but allow versatility in the system design. This application note discusses the differences between the two pins, system implementation, and how to debug issues. Reset vs. Standby Although very similar, the reset and standby pins function differently. Unlike the standby pin, both the serializer and deserializer have the reset pin. When reset is in LOW state, the device is in a power-down mode. The power-down mode consumes less than 10µA of power. When reset is asserted HIGH, all registers and outputs are reset to initial states. The reset is designed with an input filter, which delays the internal reset by 15µs to ensure that voltage transients do not cause an unwanted reset of the device. Only the serializer is designed with the standby pin. The deserializer monitors the level of the CTL lines to enter or exit standby. When the serializer’s standby pin is in the LOW state, the serializer pulls all four CTL lines to the rail. This CTL voltage level puts the deserializer into standby mode. When the serializer’s standby pin is asserted HIGH, the serializer drives all four CTL lines to ground. This LOW state enables the deserializer (see Figure 1). Unlike reset, standby does not reset the register and outputs; they remain in their last-known state. Figure 1 – CTL Enable Pulse To assert the serializer and deserializer into reset or standby, only one of the pins must be pulled LOW. For example, if reset is LOW on both the serializer and deserializer and standby is HIGH, the devices are reset. To enable the device, both reset and standby must be HIGH. To enable the serializer and deserializer, the deserializer’s reset pin must be HIGH and the serializer’s reset and standby pins must be HIGH. See Tables 1&2 for serializer and deserializer comparisons. Deserializer enabled |
同様の部品番号 - FIN324C |
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同様の説明 - FIN324C |
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