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WM8350 Datasheet(PDF) 7 Page - Wolfson Microelectronics plc

Part # WM8350
Description  Wolfson AudioPlus??Stereo CODEC with Power Management
PDF  340 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8350 Datasheet(HTML) 7 Page - Wolfson Microelectronics plc

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Production Data
WM8350
w
PD, February 2011, Rev 4.4
7
16.4
LED DRIVER CONNECTIONS ..................................................................... 153
17
POWER SUPPLY CONTROL....................................................................154
17.1
GENERAL DESCRIPTION ........................................................................... 154
17.2
BATTERY POWERED OPERATION............................................................ 155
17.3
WALL ADAPTOR (LINE) POWERED OPERATION ..................................... 155
17.4
USB POWERED OPERATION..................................................................... 156
17.5
EXTERNAL INTERRUPTS ........................................................................... 158
17.6
BACKUP POWER ........................................................................................ 158
17.7
BATTERY CHARGER .................................................................................. 159
17.7.1
GENERAL DESCRIPTION................................................................................................. 159
17.7.2
BATTERY CHARGER ENABLE......................................................................................... 160
17.7.3
TRICKLE CHARGING........................................................................................................ 161
17.7.4
FAST CHARGING.............................................................................................................. 163
17.7.5
BATTERY CHARGER TIMEOUT AND TERMINATION ..................................................... 165
17.7.6
BATTERY CHARGER STATUS......................................................................................... 166
17.7.7
BATTERY FAULT CONDITIONS ....................................................................................... 167
17.7.8
INTERRUPTS AND FAULT PROTECTION ....................................................................... 169
18
SYSTEM MONITORING AND UNDERVOLTAGE LOCKOUT (UVLO) .....170
19
AUXILIARY ADC........................................................................................172
19.1
GENERAL DESCRIPTION ........................................................................... 172
19.2
INITIATING AUXADC MEASUREMENTS .................................................... 173
19.3
VOLTAGE SCALING AND REFERENCES................................................... 175
19.4
AUXADC READBACK .................................................................................. 176
19.5
CALIBRATION.............................................................................................. 178
19.6
DIGITAL COMPARATORS........................................................................... 179
19.7
AUXADC INTERRUPTS ............................................................................... 180
20
GENERAL PURPOSE INPUTS / OUTPUTS (GPIO).................................181
20.1
GENERAL DESCRIPTION ........................................................................... 181
20.1.1
CONFIGURING GPIO PINS .............................................................................................. 182
20.1.2
INPUT DE-BOUNCE.......................................................................................................... 183
20.1.3
GPIO INTERRUPTS .......................................................................................................... 183
20.2
GPIO ALTERNATE FUNCTIONS ................................................................. 184
20.2.1
LIST OF ALTERNATE FUNCTIONS.................................................................................. 184
20.2.2
SELECTING GPIO ALTERNATE FUNCTIONS ................................................................. 187
21
VOLTAGE REFERENCES.........................................................................191
21.1
MAIN REFERENCE (VREF) ......................................................................... 191
21.2
LOW-POWER REFERENCE........................................................................ 191
22
REAL-TIME CLOCK (RTC)........................................................................192
22.1
GENERAL DESCRIPTION ........................................................................... 192
22.2
RTC CONTROL............................................................................................ 192
22.2.1
MODES OF OPERATION .................................................................................................. 192
22.2.2
RTC TIME REGISTERS..................................................................................................... 192
22.2.3
SETTING THE TIME .......................................................................................................... 193
22.2.4
RTC ALARM REGISTERS................................................................................................. 193
22.2.5
SETTING THE ALARM ...................................................................................................... 195
22.3
TRIMMING THE RTC ................................................................................... 195
22.4
RTC GPIO OUTPUT..................................................................................... 197
22.5
RTC INTERRUPTS ...................................................................................... 198
23
WATCHDOG TIMER..................................................................................199
24
INTERRUPT CONTROLLER .....................................................................201
24.1
CONFIGURING THE IRQ PIN...................................................................... 201
24.2
FIRST-LEVEL INTERRUPTS ....................................................................... 202
24.3
SECOND-LEVEL INTERRUPTS .................................................................. 203



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