Datenblatt-Suchmaschine für elektronische Bauteile |
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CFA631 Datenblatt(PDF) 29 Page - Crystalfontz America, Inc. |
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CFA631 Datenblatt(HTML) 29 Page - Crystalfontz America, Inc. |
29 / 81 page Crystalfontz Data Sheet Release 2014-11-17 www.crystalfontz.com CFA631 Intelligent Display Modules Page 29 ATX POWER SUPPLY ATX Power And Control Connections ATX power supply control functionality allows the buttons on the CFA631 to replace the power and reset button on your system, simplifying front panel design. This ATX power supply control functionality can be accomplished with the optional SCAB+WR-PWR-Y14 ATX power cable or use the WR-PWR-Y25 or WR-PWR-Y38 ATX power cable without the SCAB. The SCAB provides fan monitoring and control as well as DOW temperature sensor monitoring. When configuring the CFA631 for ATX functionality, open jumper JP2 in order to ensure correct operation. See Jumpers That Can Be Modified (Pg. 16). This is required whether the optional SCAB is or is not used. ATX configuration for the CFA631 is powered from the PC's VSB signal, the “stand-by” or “always-on” +5v ATX power supply output, on pins 15 and 16 of the H1 connector. When using the optional SCAB, the +5 standby voltage is supplied on the 7-pin header pins labeled GND and +5v. GPIO[1] ATX Host Power Sense Since the CFA631 must act differently depending on whether the host's power supply is on or off, you must also connect the host's “switched +5v” to GPIO[1]. This GPIO line functions as POWER SENSE. The POWER SENSE pin is configured as an input with a pull-down, 5kΩ nominal. GPIO[2] ATX Host Power Control The motherboard's power switch input is connected to GPIO[2]. This GPIO line functions as POWER CONTROL. The POWER CONTROL pin is configured as a high impedance input until the display module instructs the host to turn on or off. Then it will change momentarily to low impedance output, driving either low or high depending on the setting of POWER INVERT. See command 28 (0x1C): Set ATX Power Switch Functionality (Pg. 54). GPIO[3] ATX Host Reset Control The motherboard's reset switch input is connected to GPIO[3]. This GPIO line functions as RESET. The RESET pin is configured as a high-impedance input until the display module wants to RESET the host. Then it will change momentarily Note The GPIO pins used for ATX control must not be configured as user GPIO. The GPIO pins must be configured to their default drive mode in order for the ATX functions to work correctly. These settings are factory default but may be changed by the user. Please see command 34 (0x22): GPIO Settings (SCAB Required) (Pg. 58). |
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Ähnliche Beschreibung - CFA631 |
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