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VX9100
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved
Only for training and service purposes
2.3.4 Memory Part
MCP contents 1024Mbits NAND FLASH memory and 512Mbits SDRAM. In the NAND Flash Memory part of
MCP are programs used for terminal operation. The programs can be changed through downloading after the
assembling of terminals. On the SDRAM data generated during the terminal operation are stored temporarily.
2.3.5 Power Supply Part
POWER ON mode will be activated by a POWER_ON_SW signal or the insertion of a charger input voltage
(V_CHAR). During the Power On Sequence the output voltages MSMC(Buck1), MSMP1(Buck2), MSMP2(LOD1),
MSMA(LDO4) and LCD(LDO2) will be activated in a sequence. Reset (RESIN\) will be released in order to power
the host processor up properly. when MSMx[*] reaches 87% of its final value, a 60ms reset timer is started. Now the
BB Processor is initialized and will assert PS_HOLD signal high within 60ms. PS_HOLD maintains the power on.
The two Buck converters / LDO1,2,4 in PMIC are generating the +1.275V_MSMC, +1.85V_MSMP1,
+2.6V_MSMP2, +2.8V_LCD, and +2.6V_MSMA respectively.
The Rx part LDO3 in PMIC is operated by the control signal SLEEP/ from MSM6550A
The Tx part LDO4 in PMIC is operated by the control signal IDLE/ from MSM6550A.
The TCXO part LDO5 in PMIC is operated by the control signal TCXO_EN/ from MSM6550A.
2.3.6 Logic Part
The logic part consists of internal CPU of MSM, RAM, MCP. The MSM6550A receives TCXO (=19.2MHz) from
the U1010 and controls the phone in CDMA modes. The major components are as follows:
CPU
The ARM926EJ-S microprocessor includes a 3 stage pipelined RISC architecture, both 32-bit ARM and 16-bit
THUMB instruction sets, a 32-bit address bus, and a 32-bit internal data bus. It has a high performance and low
power consumption.
MCP
NAND Flash is used to store the terminal’s program. Using the down-loading program, the program can be
changed even after the terminal is fully assembled.
SDRAM is used to store the internal flag information, call processing data, and timer data.
KEYPAD
For key recognition, key matrix is setup using key encoder IC . 5 LEDs and backlight circuitry are included in the
keypad for easy operation in the dark.
LCD MODULE
LCD module contains a controller which will display the information onto the LCD by 16-bit data from the
MSM6550A. It is also supplied 2.8V_LCD by Out6 in U5002 for wide view angle and LCD reflects to
improve the display efficiency. 7 LEDs is used to display LCD backlight.
Содержание VX9100 Maroon
Страница 135: ...1 VX9100 Assembly Disassembly Diagram ...
Страница 136: ......
Страница 137: ......
Страница 138: ...2 VX9100 Block Circuit Diagram Main Key Pad FPCB ...
Страница 139: ...Block Diagram ...
Страница 141: ...Circuit Diagram Main Key Pad ...
Страница 142: ...Main Board Circuit ...
Страница 149: ...Keypad Circuit ...
Страница 151: ...3 VX9100 Part List Main Key Pad FPCB ...
Страница 161: ...4 VX9100 Component Layout ...
Страница 164: ...5 VX9100 BGA Pin Map ...
Страница 165: ...BOTTOM VIEW Unit mm USED NOT USED 1 MSM6550A U202 A1 Index Mark ...
Страница 166: ...2 HYC0SGH0MF3P 6S60E U300 Unit mm A1 Index Mark USED NOT USED BOTTOM VIEW All Pins assigned to Logic Signal and GND ...
Страница 167: ...3 MAX9775EBX T U301 TOP VIEW USED NOT USED ...
Страница 168: ...4 LP3922 U401 USED NOT USED BOTTOM VIEW ...
Страница 169: ...5 BD6085GUL U500 USED NOT USED BOTTOM VIEW ...