RadiSys Endura GL815E Product Manual

RadiSys Endura GL815E Product Manual Manual pdf 13 page image

GL815E Endura Motherboard Product ManualPage 13 of 511.4.2 Front Panel ConnectionsThe primary controls and indicators for the motherboard are connected via the front panel connectorusing either a single ribbon cable to a 'front panel' assembly, or using a number of small PC-standard connectors. The functions are described below. See appendix B for the connector pin-outinformation.Power LEDThis can be used to connect either a single-color LED (usually green) or a two-terminal bi-color LED(usually green/yellow) to indicate the powered status of the motherboard. In both cases, the 'green'anode should be attached to pin 2 of the front panel connector. See the Indicators section later inthis document for further information.Power SwitchA momentary switch should be connected between pins 6 and 8 of the power connector if themotherboard is used with a soft-switch power supply. If the switch is closed for greater thanapproximately 4 seconds, the motherboard will power off immediately, regardless of the state of theoperating system, losing any system context information. This switch is redundant when using ahard-switch power supply.Reset SwitchIf used, a momentary switch connected between pins 5 and 7 will cause the motherboard to restartwhen closed.Hard Disk LEDA single color LED should be connected between pins 1 (anode) and 3 to indicate hard disk activityon either of the two ATA channels.SpeakerConnect an external speaker between pins 10 and 11 or 10 and 16. This is used only for the PC'beep' functions - it cannot be used as an output of the audio CODEC. The speaker should typicallybe 8Ω.Tamper SwitchConnect a momentary switch between pins 18 and 20 to make use of the tamper detection logic ofthe motherboard. The switch should be open when the chassis is closed.Infra-red portPins 9, 11, 13 and 15 provide an interface to an infra-red receiver/transmitter module. Pins 9 and 13provide the +5V module power and signal ground return.