MSM6050
LCD
Keypad
Processor
Audio
Power
Supply
Ringer
Receptacle
Earpiece
Mic
Flash
Memory
SRAM
CAMERA MODULE
[Figure 2-2] Block Diagram of Digital/Voice Processing Part
2.3.4 Memory Part
MCP contents 256 Mbits flash memory and 64 Mbits Static RAM. In the Flash Memory part of MCP are
programs used for terminal operation. The programs can be changed through down loading after the assembling
of terminals. On the SRAM 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, the power-up circuitry in
Power on & off part is activated by the PWR_ON_SW signal, and then the LDO regulators for MSM are
operated and +1.86V_MSMC, +2.85V_MSMP, and +2.6V_MSMA are generated.
The Rx part regulator (+2.85V_RX) is operated by the control signal of SLEEP/ from MSM6050
The Tx part regulator (+3.0V_TX) is operated by the control signal of IDLE/ from MSM6050.
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