3. TECHNICAL BRIEF
- 43 -
3.9.3 Charging control
A programmable charging block in PM6650 is used for battery charging. It is possible to set limits for
the charging current. The external supply typically connects directly to pin (VCHG). The voltage on this
pin (VCHG) is monitored by detection circuitry to ascertain whether a valid external supply is applied or
not. For additional accuracy or to capture variations over time, this voltage is routed internally to the
housekeeping ADC via the analog multiplexer. PM6650 circuits monitor voltages at VCHARGER and
ICHARGE pins to determine which supply should be used and when to switch between the two
supplies. These pins are connected to the Source (or emitter) and Drain (or collector) contacts of the
pass transistor respectively.
CU500 Battery Bar Display(Stand By Condition)
3.9 0.05V
3.77 0.05V
3.7 0.05V
3.6
0.05V
3.5 0.05V
±
±
±
±
±
Summary of Contents for CU500 - Cell Phone
Page 1: ...Date June 2006 Issue 1 0 Service Manual Model CU500_TU500 Service Manual CU500_TU500 ...
Page 3: ... 4 ...
Page 41: ...3 TECHNICAL BRIEF 42 Figure PM6650 Functional Block Diagram ...
Page 68: ...4 TROUBLE SHOOTING 69 4 1 RF Component Bottom Side 4 TROUBLE SHOOTING ...
Page 69: ...4 TROUBLE SHOOTING 70 ...
Page 73: ...4 TROUBLE SHOOTING 74 Check R400 of PMIC U400 Check R223 of MSM U200 ...
Page 77: ...4 TROUBLE SHOOTING 78 For testing Max power of UMTS 1900MHz is needed ...
Page 85: ...4 TROUBLE SHOOTING 86 ...
Page 87: ...4 TROUBLE SHOOTING 88 ...
Page 91: ...4 TROUBLE SHOOTING 92 ...
Page 95: ...4 TROUBLE SHOOTING 96 R300 Q401 Q400 ...
Page 98: ...4 TROUBLE SHOOTING 99 Q501 X 200 U505 ...
Page 105: ...4 TROUBLE SHOOTING 106 CN602 CN1 ...
Page 107: ...4 TROUBLE SHOOTING 108 C102 C104 R200 R201 ...
Page 109: ...4 TROUBLE SHOOTING 110 CN602 SPK_LP L N SPK_RP RN AMP block ...
Page 111: ...4 TROUBLE SHOOTING 112 MIC U303 ...
Page 113: ...4 TROUBLE SHOOTING 114 Mic input 5 4 2 1 3 6 Headset detect port ...
Page 129: ...5 DOWNLOAD 130 3 NV Restore error When you meet the NV Restore error ...
Page 130: ...5 DOWNLOAD 131 Connect to the phone Click on Cancel ...
Page 135: ...Table 6 1 1 RF Block Component 6 BLOCK DIAGRAM 136 ...
Page 138: ...6 BLOCK DIAGRAM 139 Top Side ...
Page 139: ...6 BLOCK DIAGRAM 140 Bottom Side ...
Page 147: ... 148 8 pcb layout ...
Page 148: ... 149 8 pcb layout ...
Page 149: ... 150 8 pcb layout ...
Page 150: ... 151 8 pcb layout ...
Page 151: ... 152 ...
Page 157: ...9 CALIBRATION 158 9 3 HOT KIMCHI Example Choose Exe_Cu500Ag_100 ...
Page 158: ...9 CALIBRATION 159 Click APPLY button Click START button ...
Page 161: ... 162 ...
Page 185: ...Note ...
Page 186: ...Note ...