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CircuitDescription
2-4
2-3.EMIESDFilter
This systemusesthe EMIESDfilter,GMF05LCto protectnoisefromIFCONNECTORpart.
2-4. IFconnetor
It is24-pinconnector.Theyare designed to useVBATT,CF,UART1_TX,UART1_RX,UART1_RFR,
UART1_CTS,JIG_ON,RTCK,TCK,TDI, TDO,TMSand GND.They connected to powersupplyIC,
microprocessorand signalprocessorIC.
3.Audio
EAR1OPand EAR1ONfromU302 areconnected tothe mainspeaker.AUXOPand AUXONareconnected to
the DigitalAMP.MIC1Pand MIC1Nareconnected tothe mainMIC.And MIC2Pand MIC2Nareconnected to
the Earphone.
YMU765 hasa built-in amplifier,and thus,isan idealdeviceforoutputting soundsthatare used bymobile
phonesin addition to gamesoundsand ringing melodiesthatarereplayed byasynthesizer.
The synthesizersection adopts"stereophonichybridsynthesizersystem"thatare given advantagesofbothFM
synthesizersand WaveTablesynthesizersto allowsimultaneousgeneration ofup to 32 FMvoicesand 32 Wave
Tablevoices.Furthermore,YMU765 hasa built-in hardwaresequencerthathelpstorealizecomplexplaywithout
heavilyloading the hostCPU.And thisdevice also hasa built-incircuit forcontrolling vibratorsand LEDs
synchronizing with playofmusic.The consumed electric currentcan be stopped tothe minimumbypowerdown
mode when notoperating.
The hardwaresequence builtinthisdevice allowsplaying of the complexmusicwithoutgiving excessiveload to
the CPUof the portabletelephones.Moreover, the registersof the FMsynthesizercan be operated directlyfor
realtimesound generation,allowing, forexample,utilization ofvarious sound effectswhen using the game
softwareinstalled inthe portabletelephone.
4.Memory
The signalsinthe MSM6250 enabletwomemories.Theyuse onlyone voltsupply voltage,VDD_LPfrom
the PM6650.This systemusesSEC'smemory,KBE00F005M-F411. It is consisted of1GbitsflashNAND
memoryand 512MbitsSDRAM memory. It has16 bitdataline,D1[0~15]whichis connected toMSM6250.
It has22 bitaddress lines,A[1~22]. ROM_CSand RAM_CSsignalsis chipselect.
6.Camera
The cameramoduleconsistsofMega pixeland VGApixel.The Mega cameraisa highlyintegrated CMOScolor
image sensorimplemented byHynixCOMSsensorprocess realizing high sensitivityand wide dynamicrange.
Totalpixelarray sizeis1184Hx914V,and 1170Hx880Vpixelsare active.The VGAcameraisa
highlyintegrated CMOScolorimage sensorimplemented byHynixCOMSsensorprocess realizing high sensitivity
and wide dynamicrange.Totalpixelarray sizeis656Hx492V,and 656Hx488Vpixelsare active.
7. Irda
This systemusesIRDAmodule,HSDL_3208,Agilent's.Thishas signals,"IRA_DOWN"(enaglesignal),
"RXD0"(Inputdata)and "TXD0"(outputdata).Thesesignalsareconnected toU302(MSN6200).Itusestwo power
signals."VDD_LP"isused forcircuitand "VBATT"isused forLED.
