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3. TECHNICAL BRIEF
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3.10.2.4 HKADC(House Keeping ADC)
The MSM6250 device has an on-chip 8-bit analog-to-digital converter (HKADC) which is tended to
digitize DC signals corresponding to analog parameters such as battery voltage, temperature, and RF
power levels. The MSM6250 device has six analog input pins which are multiplexed to the input of the
internal HKADC.
Figure 3.10.2.4-1 MSM6250 HKADC Block diagram
Table 3.10.2.4-1 HKADC channel table
ADC Ch#
Signal Name
Note
HKADC0
AMUX_OUT
RF PAM Temperature sensing
HKADC1
VBATT_LEVEL
Battery voltage level sensing
HKADC2
HDET1
RF WCDMA PAM Power Level sensing
HKADC3
MULTI_ADC
Headset type Detection
HKADC4
PCB REVISION
MAIN PCB Revision checking
HKADC5
VBAT_TEMP
Battery Temperature sensing
Содержание U880
Страница 1: ...Date November 2005 Issue 1 0 Service Manual Model U880 Service Manual U880 ...
Страница 20: ...3 TECHNICAL BRIEF 21 ...
Страница 32: ...3 TECHNICAL BRIEF 33 Figure 3 5 6 1 GSM PA functional block diagram ...
Страница 35: ...3 TECHNICAL BRIEF 36 Figure 3 5 10 1 Bluetooth system architecture ...
Страница 50: ...3 TECHNICAL BRIEF 51 Figure 3 10 3 2 1 PM6650 Functional Block Diagram ...
Страница 110: ...4 TROUBLE SHOOTING 111 R605 R606 receiver signal serial resistor Receiver CN600 50pin LCD connector FPCB for LCD Module ...
Страница 112: ...4 TROUBLE SHOOTING 113 R605 R606 receiver signal serial resistor CN600 50pin LCD connector CN901 C907 C911 ...
Страница 114: ...4 TROUBLE SHOOTING 115 Loud Speaker U502 U503 Amp ...
Страница 118: ...4 TROUBLE SHOOTING 119 C200 C201 for MIC serial capacitor ...
Страница 121: ...4 TROUBLE SHOOTING 122 Q404 Q403 Q402 VBATT GND ...
Страница 128: ...5 DOWNLOAD 129 5 Choose a Module Image file after clicking on the Browse button ...
Страница 132: ...5 DOWNLOAD 133 Downloading the AMSS Modem image Rebooting and waiting for a while Performing NV restore ...
Страница 134: ...5 DOWNLOAD 135 Download of Module image in progress Download process has completed successfully ...
Страница 143: ...6 BLOCK DIAGRAM 144 6 3 Interface Diagram U880 Interface Diagram ...
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Страница 154: ... 155 8 PCB LAYOUT ...
Страница 155: ... 156 8 PCB LAYOUT ...
Страница 156: ... 157 8 PCB LAYOUT ...
Страница 157: ... 158 8 PCB LAYOUT ...
Страница 158: ... 159 8 PCB LAYOUT ...
Страница 159: ... 160 8 PCB LAYOUT ...
Страница 166: ...9 CALIBRATION 167 Click START button U880 U880_ver1 1 U880 U880 Click U880 ...
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Страница 196: ...Note ...
Страница 197: ...Note ...