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SGH-X640 SVC TRAININGH/W BASEBAND PART

MINSOO, LEE

DATE : 10 . MAR . 2005PLACE : GUMI, KOREA

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CONTENTS BLOCK DIAGRAM PLACEMENT DIAGRAM BASEBAND PART

Power on Memory Camera Melody Charging part SIM Microphone Earpiece Key

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BLOCK DIAGRAM

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MAJOR COMPONENT – PBA TOP VIEW Antenna pad

Antenna Switch

PAM

TX VCO

32KHz OSC.

PMIC

SIM connector

Dual LDO

ESD Protection IC

Backup BAT.

Audio-MelodySwitch

RF main chip

VC-TCXO(26MHz)

LCD connector

BB main chip

Backend IC

Memory

Melody IC

Charging IC

SAW filter

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MAJOR COMPONENT – PBA BOTTOM VIEW

Hall IC

Key load switch

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POWER ON JIG

VBATCHARGER_OKPMIC(AUXON)PMIC(RSTON) OM6357

DEVICE RECOGNITION REC1,REC2, REC3

RESET SIGNAL Memory --- VDD3 Camera --- IMAGE_RESET Melody --- M_RST LCD --- RESET_2.8V

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32KHz Clock system clock and SIM clock

RSTON Active-Low reset for in / external circuitry supplied

by DVDD1. The RSTON keeps HIGH after the power supply modules are enabled.

POWER ON

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MEMORY - schematic

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MEMORY - comment

Structure 128M ROM + 128M NAND + 64M SCRAM

Chip selection CS_NAND, NCSFLASH, HA(23)

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CAMERA - schematic

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CAMERA - comment

Signal IMAGE_INT : recognize the event HWR_N, HRD_N : write/read on the backend IC HD(0:15) : OM6357, memory data LD(0:15) : LCD data Y(0:7) : YUV image data from image sensor module

to Alpha chip(MV317SAQ) Standby: idle, active control signal

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MELODY - schematic

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MELODY - comment

Signals MEL_13M : Driving clock from VC-TCXO AMP_N, AMP_P : Output from Yamaha Melody IC HWR_N, HRD_N : write/read enable HD(0:7) : melody data

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CHARGING PART - schematic

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CHARGING PART - comment

Signals V_EXT_CHARGE : supply from the TA around 5.0V,

550mA CHARGER_ON : charger existence. CHG_ON : control charger pin. If stopping charging, it

would be HIGH. MES_BATT : indicating battery voltage level. END_OF_CHARGE : charger status pin.

In charging mode : HIGH Full charged mode : LOW

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SIM – schematic

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SIM - comment

Signals SIM_VCC : supply voltage for SIM card SIM_RST : reset for SIM card SIM_CLK : clock to SIM card SIM_IO : I/O line to/from SIM card

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MICROPHONE

Signals MIC_P, MIC_N : input from mic

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EARPIECE - schematic

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EARPIECE - comment

Signals JACK_EN M_SEL

JACK_EN M_SELAUDIO 0 0AUDIO 1 0

MELODY 0 1TMI 1 1

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ON/OFF, SIDE KEY - schematicONKEY

SIDE KEY

Signals ONKEY_N : controls Power ON and OFF KBIO(3), KBIO(4), KBIO(7)

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KEY DATA INPUT/OUTPUT - schematic

Signals KBIO(0:7) : key scanning procedure is fully processed

in the main CPU ‘SEND’ key : KBIO(0:1)

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KEY BACKLIGHT

Signals VDD_KEY : controls ON/OFF, supply voltage for LEDs

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QUESTION