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LG Electronics Inc.
MCP contents 2Gbits NAND FLASH memory and 1Gbits 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
When the battery voltage (+3.7V) is fed and the PWR key of keypad is pressed, U408(PMIC) is activated by the
PWR_ON_SW signal, and The PWRON signal is held high, Buck1,2 and LDO1,2,3 are turned on; when LDO1
reaches 87% of its final value a 60ms reset timer is started at after which RESET\ is asserted high. Now the BB
Processor is initialized and will assert PS_HOLD high. PS_HOLD maintains the power on.
The Buck1,2/LDO1,2,4 are generating the +1.275V_MSMC, +1.8V_MSMP1/ +2.6V_MSMP2, +2.8V_LCD and
+2 .6V_MSMA respectively.
The Rx part LDO(Out3) is operated by the control signal SLEEP/ from MSM6800A
The Tx part LDO(Out6) is operated by the control signal IDLE/ from MSM6800A.
The TCXO part LDO(Out5) is operated by the control signal TCXO_EN/ from MSM6800A.
2.3.6 Logic Part
The logic part consists of internal CPU of MSM, RAM, MCP. The MSM6800A receives TCXO (=19.2MHz) from
the X101 and controls the phone in CDMA modes. The major components are as follows:
CPU
The ARM926J-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 KYPD[1][3][5][7][9][11]signal from MSM6800A. 6 LEDs and
backlight circuitry are included in the keypad for easy operation in the dark.
TOUCH WINDOW
For key recognition, U517 communicates with MSM6800A by using TOUCH_I2C_SDA, TOUCH_I2C_SCL,
TOUCH_PENIRQ/. Touch window also supports vibe-touch function when pressing is recognized.
LCD MODULE
LCD module contains a controller which will display the information onto the LCD by 16-bit data from the
MSM6800A. It is also supplied 2.8V_LCD by LDO2 in U408 for fine view angle and LCD reflects to
improve the display efficiency. 5 LEDs is used to display LCD backlight.
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Summary of Contents for VX9700
Page 26: ... 25 132 LG Electronics Inc VX9700 28 Powering Down Restart Z 3 X B O X C O M ...
Page 59: ... 58 132 LG Electronics Inc VX9700 Waveform Waveform F106 pin2 DP2 pin2 Z 3 X B O X C O M ...
Page 154: ...CON104 Z 3 X B O X C O M ...
Page 156: ...Z 3 X B O X C O M ...
Page 159: ...CON809 SW101 SW102 Z 3 X B O X C O M ...
Page 160: ...CON808 Z 3 X B O X C O M ...
Page 162: ...CON809 SW104 Z 3 X B O X C O M ...
Page 163: ...CON808 Z 3 X B O X C O M ...
Page 165: ...SW1 CON2 Z 3 X B O X C O M ...
Page 166: ...CON1 Z 3 X B O X C O M ...
Page 167: ... 15 132 LG Electronics Inc VX9700 Appendix 3 Part List VX9700 Part List Z 3 X B O X C O M ...
Page 168: ... 16 132 LG Electronics Inc VX9700 Appendix 4 Components Layout Z 3 X B O X C O M ...
Page 174: ...Z 3 X B O X C O M ...