LG LG-UD90c, Руководство по обслуживанию

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LG-KG90C
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2.3.7 Logic Part
The Logic part consists of internal CPU of MSM6100, MCP(SRAM& FLASH MEMORY) .
The MSM6100 receives TCXO (=19.2MHz) and controls the phone in both CDMA and FM modes.
The major components are as follows:
CPU : ARM926EEJ-S microprocessor core
MEMORY :
•
FLASH SRAM : 1G bits(Flash) + 512M bits(SRAM)
CPU
ARM926EEJ-S 32-bit microprocessor is used and CPU controls all the circuitry. Some of the features
of the ARM microprocessor include a 3 stage pipelined RISC architecture, both 32-bit ARM and 16bit
THUMB instruction setsm, a 32-bit address bus, and a 32-bit internal data bus.
FLASH Memory
Flash Memory is used to store the program of the mobile station. Using the down-loading program, the
program can be changed even after the mobile station is fully assembled.
SRAM
SRAM is used to store the internal flag information, call processing data, and timer data.
KEYPAD
For key recognition, key matrix is setup using GPIO46,47,50,51,52,53,62,63 of output ports of MSM.
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 MSM6100
It is also supplied 2.6V_MSMP by PMIC(MAX1827) for fine view angle and LCD reflects to
improve the display efficiency. White LEDs are used to display LCD backlight.
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