P104-WDG-CSMA
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Embedded Solutions P104-WDG-CSM - PC/104-Plus Watchdog Timer Status Monitor FEATURES • PC/104-Plus Watchdog Timer card with software selectable timeout from 4 µsec • Watchdog open collector reset outputs • Temperature sensor with calibration pot • Temperature monitor / alarm • Temperature measurement with 8-bit A/D • Fan status and speed control • PCI/104 power monitor / limit alarm interrupt • Opto-isolated input to trigger reset • General purpose opto-isolated input • Two isolated outputs, current limited • TTL reset pushbutton input • Two general purpose 8-bit A/D inputs • External fused 5V and 12V power • Light sensor for enclosure security • Supported in DOS, Windows, Linux • PC/104 bus pass through connector FACTORY OPTIONS • PCI-104 only • Extended Temperature FUNCTIONAL DESCRIPTION This multifunction card contains a watchdog timer used to monitor the operation of your application program and operating system to initiate a system reset in case of a lockup. It can also monitor and control a variety of system hardware parameters. Three models with increasing features are available. P104-WDG-E The economy version includes the full programmable watchdog timer with open collector outputs that can reset the computer. This requires your application program to have embedded watchdog software code that communicates a prompt to the timer. If this prompt is missed, a hard computer reset is initiated after the user programmed watchdog timer period has been reached. This is valuable where the lock up of the application is due to being in a software loop where some hardware watchdogs cannot detect. P104-WDG-CSM The Computer Status Monitor (CSM) version includes features in the economy model and adds capability to monitor the health and control various computer functions. The PCI-Bus 5V and +/-12V are monitored and if any voltage varies by more than 6%, an interrupt can be generated. The temperature monitor compares an on-board temperature ADL Embedded Solutions GmbH, Eiserfelder Straße 316 D-57080 Siegen, Germany P. +49 (0) 271 250 810 0 F. +49 (0) 271 250 810 20 e-mail: sales@adl-europe.com; web: www.adl-europe.com ADL Embedded Solutions Inc., 4411 Morena Blvd., Suite 101 San Diego, CA 92117-4345 P. +1 858 490-0597 F. +1 858 490-0599 e-mail: sales@adl-usa.com; web: www.adl-usa.com

Embedded Solutions sensor output to a preset reference (approximately 50EC). A status register indicates normal or high temperature and can also generate an interrupt. The temperature measurement circuit uses an on-board 8-bit A/D as the digitizer. This model also provides one general-purpose opto-isolated input. Two digital isolated outputs are provided to control/switch external events in response to CSM conditions. In parallel to these two isolated outputs are two nonisolated digital outputs that can sink/source up to 15mA and can drive LEDs to indicate the switched event of the isolated...

Embedded Solutions Block Diagram Specifications Watchdog Timer Time-out: Software selectable from 4 usec to 2060 sec Clock: 2.08333 MHz., derived from computer clock (33 MHz ÷ 16) Address: 8-Bit I/O Mapped Status Register Voltages: If +5V, +12V or -12V varies by more than +/- 6% Temp Alarm: IRQ and status register indication if temperature is above 122 ̊F (50oC) Temp Digitizer: 8- bit ADC, LSB = 0.7 ̊F (.39o C) Fan Speed: IRQ and Status register indication if speed is too high or two low Digital Outputs Isolated: Two, 5V through a 330 Ω resistor Non-Isolated: Two, controlled with isolated...