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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PC87364 датащи(PDF) 136 Page - National Semiconductor (TI) |
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PC87364 датащи(HTML) 136 Page - National Semiconductor (TI) |
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136 / 180 page  7.0 WATCHDOG Timer (WDT) (Continued) 134 www.national.com 7.3.3 WATCHDOG Mask Register (WDMSK) This register is used to determine which system events (IRQ) are enabled as WATCHDOG Timer trigger events. An enabled IRQ event becomes a trigger event that causes the timer to reload the WDTO and restart the countdown. This register enables or masks the trigger events that restart the WATCHDOG timer. Location: Offset 01h Type: R/W Bit 7654 3 2 10 Name Reserved Serial Port 2 IRQ Trigger Enable Serial Port 1 IRQ Trigger Enable Mouse IRQ Trigger Enable KBD IRQ Trigger Enable Reset 0000 0 0 00 Bit Description 7-4 Reserved 3 Serial Port 2 IRQ Trigger Enable. This bit enables the IRQ assigned to Serial Port 2 to trigger WATCHDOG Timer reloading. 0: Serial Port 2 IRQ not a trigger event 1: An active Serial Port 2 IRQ enabled as a trigger event 2 Serial Port 1 IRQ Trigger Enable. This bit enables the IRQ assigned to Serial Port 1 to trigger WATCHDOG Timer reloading. 0: Serial Port 1 IRQ not a trigger event 1: An active Serial Port 1 IRQ enabled as a trigger event 1 Mouse IRQ Trigger Enable. This bit enables the IRQ assigned to the Mouse to trigger WATCHDOG Timer reloading. 0: Mouse IRQ not a trigger event 1: An active Mouse IRQ enabled as a trigger event 0 KBD IRQ Trigger Enable. This bit enables the IRQ assigned to the Keyboard to trigger reloading of the WATCHDOG timer. 0: Keyboard IRQ not a trigger event 1: An active Keyboard IRQ enabled as a trigger event |
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