MSC CX-MB-EVA2 user manual Backlight Inverter Interface, Pinout Backlight

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CX-MB-EVA2 User's Manual

Hardware

 

 

4.6.2Backlight Inverter Interface

The supply voltage of the backlight can be adjusted with jumper JP0601. The according position is printed on the PCB.

Jumper J5 should be set according to the backlight inverter used.

If the inverter needs a low active start signal, jumper J5 has to be set to L (pin1 connected to pin2).

If the inverter needs a high active start signal, jumper J5 has to be set to H (pin2 connected to pin3).

Brightness of the backlight inverter is controlled via the LVDS-BKLT-CTRL signal.

The LVDS-BKLT-CTRL signal of the COM Express module is a PWM signal with current chipsets. This signal is integrated and then limited to the maximum allowable voltage of the backlight inverter via a voltage divider.

Control voltage: 0...3V

A value of 0V corresponds to maximum brightness.

Specification:

￿ References: X15

￿ Connector:

Molex (53047-0510) 53261-0590

￿Pinout: Refer to Table 5

Pin

 

Signal name

Function

1

 

VCC

Power supply backlight

2

 

GND

Ground

3

 

BLON#

Backlight On

4

 

VCON

Brightness control

5

 

GND

Ground

Table 10

Pinout Backlight

 

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Contents User’s Manual Disclaimer Copyright NoticeImportant Information EMC Rules TrademarksMechanics Preface General InformationIntroduction HardwareLCD Eeprom SW0611 Illustrations Tables Revision Date Comment January 14 First release Revisions and ModificationsReference Documents Definitions and Abbreviations Features Product DescriptionIntroduction Block Diagram Illustration 1 Block Diagram Base BoardPositioning of the Connectors Illustration 2 Positioning of the ConnectorsDimensions Assembly notesSpecification Plug-in Position of the COM Express moduleACRST# COMExpress Connector Rows a and B PCIRESET# IDECBLID# Assignment PCI slot to connector reference Specification PCI SlotsFRAME# Assignment PCIe Lane to connector reference Specification PCI Express x1 SlotsPCI Express x16 Graphics Slot A36 PERn4 B36 VGA Interface LVDS-Interface Lvds EepromBacklight Inverter Interface Jili Interface Standard Jili ConnectorJILI40 Connector TV Out Mono-Microphone Audio1 AC97 codec Pinout LineOut Stereo Headphone Specification Stereo LineIn SpecificationPinout LineIn Stereo LineOut Specification Primary IDE Channel IDE InterfaceHDA codec 10.1.1.1 40-pin IDE interfaceCompact Flash Interface Specification Power SupplySATA-Interface USB Power Supply USB TopologyEthernet LPC Slot15 I/O Connector Specification ATX12V connector ATX ConnectorSpecification ATX connector GpioCOM Ports Characteristics of the COM portsSuperIO Interfaces used by the SuperIOIrDA 18.3 PS/2SuperIO Hardware Monitor Fan interfaceIntel Fan interface Monitored voltagesSerial Eeprom on I2C-Bus SMB Hardware MonitorSerial Eeprom on SMBus Lattice Programming Interface OnBoard BIOS-FlashPOST-Code Display Reset Button BatteryPower Button BeeperResistors for current measuring Ground PinsMiscellaneous Sleep State LED DisplayJumper settings SMBus Hardware monitor address Jumper J1303 Battery Jumper J1101Super I/O disable Jumper J6 ATX Funktion Jumper J1301DIP-switch settings
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