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PC87364 датащи(PDF) 27 Page - National Semiconductor (TI) |
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PC87364 датащи(HTML) 27 Page - National Semiconductor (TI) |
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27 / 180 page ![]() 1.0 Signal/Pin Connection and Description (Continued) 27 www.national.com 1.4.15 WATCHDOG Timer (WDT) RING 27 I INTS VSB Telephone Line Ring. Detection of a pulse train on the RING pin is a wake-up event that can activate the power-up request (PWUREQ). The pin has a Schmidt-trigger input buffer, powered by VSB. SLPS3 36 I INTS VSB Sleep State 3, 4 or 5. Input from this pin is assumed to be driven by the system’s ACPI controller to indicate the system’s power state. SLPS5 37 I INTS VSB Sleep State 4 or 5. Input from this pin is assumed to be driven by the system’s ACPI controller to indicate the system’s power state. Signal Pin/s I/O Buffer Type Power Well Description WDO 56 O OD6,O3/6 VDD WATCHDOG Out. Low level indicates that the WATCHDOG Timer has reached its time-out period without being retriggered. The output type and an optional pull-up are configurable. Signal Pin/s I/O Buffer Type Power Well Description |
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