1-14 Chapter 1: Product Overview
LCD Support
IntelgeneratedaspecificationforintegratedLCDsupportinPC
systems,calledCommonPanelInterfaceSpecification(CPIS).The
852GM/GMEgraphicscontrollerusestheLCDinterfaces.
LVDSsignalsarebroughtouttoa50pinheaderonthemotherboard.
AlthoughCPISspecifiesanLCDconnectorthe7402doesnotuseit
becauseitdoesnotsupport24‐bitcolorLCD.
DVI Interface
TheDVIsupportsNCRdisplayperipheralssuchasthe5964aswellas
standardPCdigitalmonitors.
USB Port Functionality
ThemotherboardsupportssixUSBportswiththefollowing
characteristics:
• USBv.2.0(EHCI)andIntelUniversalHCIv.1.1(UHCI)compatible
• ThreeindependentUHCIhostcontrollersplustheEHCI,allcan
maptoanyphysicalport
• EachHostControllerhasitsownroothub
• Integratedphysicallayer
transceiverswithover‐currentdetection
statusonUSBinputs
• LegacyPS/2keyboardandPS/2mousesupportsothatlegacy
softwarecanruntransparentlyinanon‐USB‐awareoperating
systemenvironment.
• Permitshotplugandplayandisochronousperipheralstobe
insertedintothesystemwithuniversaldriver
support.
TwostandardTypeAUSBports,andtwo12VPoweredUSBports
appearexternaltotheterminalonI/Orow.One24VPoweredUSBport
isavailableontheP4RetailDaughtercard.TheremainingUSBportis
internaltotheunitandreservedtosupportfuturereleases(USB
Touch,
USBBiometrics,etc).