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2. Digital/Voice Processing Part
2.1 Overview
The digital/voice processing part processes the user's commands and processes all the digital and
voice signal processing in order to operate in the phone. The digital/voice processing part is made up
of a keypad/LCD, receptacle part, voice processing part, mobile station modem part, memory part,
and power supply part.
2.2 Configuration
2.2.1 Keypad/LCD and Receptacle Part
This is used to transmit keypad signals to MSM6000. It is made up of a keypad backlight part that
illuminates the keypad, LCD part that displays the operation status on to the screen, and a receptacle
that receives and sends out voice and data with external sources.
2.2.2 Voice Processing Part
The voice processing part is made up of an audio codec in MSM6000 used to convert MIC signals into
digital voice signals and digital voice signals into analog voice signals,
amplifying parts for amplifying the voice signals and MIC signals are on Codec in MSM6000.
2.2.3 MSM6000 (Mobile Station Modem) Part
MSM6000 is the core elements of a CDMA mobile station and carries out the functions of CPU,
encoder, interleaver, deinterleaver, Viterbi decoder, Mod/Demod, codec, and vocoder.
2.2.4 Memory Part
The memory part is made up of a flash memory and a SRAM
2.2.5 Power Supply Part
The PMIC(PM6610-2) is made up of 7 Regulators and direct connet to Batt.
Regulator(150mA)s give the power each Circuits(RFT6122/RFR6122).
Regulator(150mA) gives the power to the MSM and memory parts.
PAM, Motor, LCD back light LED, Indicator LED, Keypad LED and Audio amplifier are directly
conneted to Battery.
2.3 Circuit Description
2.3.1 Keypad/LCD and Receptacle Part
Once the keypad is pressed, the key signals are sent out to MSM6000 for processing. In addition,
when the key is pressed, the keypad lights up through the use of 10 LEDs. The status and operation
of a mobile station are displayed on the screen for the user with the characters and icons on the LCD.
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Содержание LG-MC2670
Страница 1: ...LGE LG Electronics Inc CDMA PORTABLE CELLULAR PHONE LG MC2670 SERVICE MANUAL Z 3 X B O X C O M ...
Страница 17: ...LG MC26 70 DCN Mode Graph 2 1 2 1763 04MHz DCN384 14 Z 3 X B O X C O M ...
Страница 21: ...LG MC2670 Waveform DP101 Pin 5 Graph 2 1 4 c DP101 Pin 8 Graph 2 1 4 b 18 Z 3 X B O X C O M ...
Страница 32: ...LG MC2670 Circuit Diagram 29 Z 3 X B O X C O M ...
Страница 33: ...LG MC2670 Figure 2 3 1 PMIC PM6610 FUNCTIONAL BLOCK DIAGRAM 2 3 Logic Part Trouble 30 Z 3 X B O X C O M ...
Страница 55: ...LG MC2670 Appendix Z 3 X B O X C O M ...
Страница 56: ...Z 3 X B O X C O M ...
Страница 58: ...Z 3 X B O X C O M TX Line RX Line Local Line RD2670 ...
Страница 59: ...Z 3 X B O X C O M TX Line RX Line MIC Line SPK Line RD2670 ...
Страница 60: ...Z 3 X B O X C O M RD2670 ...
Страница 61: ...Z 3 X B O X C O M SPK Line MIC Line RD2670 ...
Страница 65: ...Description LG Part No Q ty MAIN PCB SPFY0083001 1 2 PCB Z 3 X B O X C O M ...