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WM8311 Datasheet(PDF) 10 Page - Wolfson Microelectronics plc |
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WM8311 Datasheet(HTML) 10 Page - Wolfson Microelectronics plc |
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10 / 302 page  WM8311 Pre-Production w PP, May 2012, Rev 3.1 10 3 PIN DESCRIPTION Notes: 1. Pins are sorted by functional groups. 2. The power domain associated with each pin is noted; VPMIC is the domain powered by LDO12 for the ‘always-on’ functions internal to the WM8311. 3. Note that an external level-shifter may be required when interfacing between different power domains. PIN NAME TYPE POWER DOMAIN DESCRIPTION Touch Panel and Auxiliary ADC F1, F2 USBVMON Analogue Input USBVDD USBVDD Supply Voltage Monitor G3 SYSVMON Analogue Input SYSVDD SYSVDD Supply Voltage Monitor G4 BATTVMON Analogue Input BATTVDD BATTVDD Supply Voltage Monitor K10 AUXADCIN1 Analogue Input/Output SYSVDD Auxiliary Analogue Input 1 / Battery Charge Current Monitor Output K11 AUXADCIN2 Analogue Input Auxiliary Analogue Input 2 L11 AUXADCIN3 Analogue Input Auxiliary Analogue Input 3 H11 AUXADCIN4 Analogue Input TPVDD Auxiliary Analogue Input 4 F9 TPVDD Supply Touch panel VDD supply G11 TPGND Supply Touch panel Power Ground Clocking and Real Time Clock J9 XTO Analogue Output VPMIC Crystal Drive Output L9 XTI Analogue Input Crystal Drive Input or 32.768kHz CMOS Clock Input K9 XOSCGND Supply Crystal Oscillator Ground H3 CLKOUT Digital Output DBVDD CMOS Clock Output Configurable Open Drain / CMOS mode. (External 4.7kΩ pull-up recommended in Open Drain mode.) J3 CLKIN Digital Input CMOS FLL Clock Input General Purpose Input / Output C10 GPIO1 Digital I/O DBVDD or VPMIC GPIO Pin 1 Selectable pull-up/pull-down. D11 GPIO2 Digital I/O GPIO Pin 2 Selectable pull-up/pull-down. D6 GPIO3 Digital I/O GPIO Pin 3 Selectable pull-up/pull-down. E3 GPIO4 Digital I/O DBVDD or SYSVDD GPIO Pin 4 Selectable pull-up/pull-down. E4 GPIO5 Digital I/O GPIO Pin 5 Selectable pull-up/pull-down. E5 GPIO6 Digital I/O GPIO Pin 6 Selectable pull-up/pull-down. D7 GPIO7 Digital I/O DBVDD or VPMIC GPIO Pin 7 Selectable pull-up/pull-down. D8 GPIO8 Digital I/O GPIO Pin 8 Selectable pull-up/pull-down. D9 GPIO9 Digital I/O GPIO Pin 9 Selectable pull-up/pull-down. E6 GPIO10 Digital I/O DBVDD or SYSVDD GPIO Pin 10 Selectable pull-up/pull-down. F10 GPIO11 Digital I/O GPIO Pin 11 Selectable pull-up/pull-down. |
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