Turn ON
When the battery voltage (4.2V ~ 3.3V) is fed and the PWR key of keypad is pressed, PMIC is
activated by the ON_SW signal, and then the control signal ON_SW_S/ signal is generated. And then,
the regurator 2.4V_MSMC & 2.8V_MSMP, 2.6V_MSMA, are operated.
Operating
During the phone is on operating state,
LDO(in PMIC) for MSM is always enable and gives the power MSM6000 and memory part
LDO(in PMIC) for +2.6V_TX part is enabled on IDLE/ state, and gives the power TX part devices.
LDO(in PMIC) for +2.6V_RX part is enabled on SLEEP/ state, and gives the power RX part devices.
Turn OFF
When the PWR key is pressed during a few seconds, PMIC is turned on by ON_SW and then, 'Low' is
outputted on ON_SW_S/. MSM6000 receives this signal and then, recognizes that the POWER key
has been pressed. During this time, MSM6000 outputs PS_HOLD as low and turn off all devices
[Figure 1-2] Block Diagram Of Power Management IC
2.3.5 Logic Part
The Logic part consists of internal CPU of MSM6000, PSEUDO RAM & FLASH MEMORY.
The MSM6000 receives TCXO/4 clock(19.20Mz) and CHIPX8 clock signals, and then controls the
phone during the CDMA and the FM mode. The major components are as follows:
8
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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 ...