WM8310
Pre-Production
TABLE OF CONTENTS
DESCRIPTION....................................................................................................... 1
FEATURES............................................................................................................ 1
APPLICATIONS..................................................................................................... 1
BLOCK DIAGRAM ................................................................................................ 2
TYPICAL APPLICATIONS .................................................................................... 3
TABLE OF CONTENTS......................................................................................... 4
1
2
3
4
5
6
7
PIN CONFIGURATION.................................................................................. 8
ORDERING INFORMATION ......................................................................... 8
PIN DESCRIPTION ....................................................................................... 9
THERMAL CHARACTERISTICS ................................................................ 13
ABSOLUTE MAXIMUM RATINGS.............................................................. 14
RECOMMENDED OPERATING CONDITIONS .......................................... 14
ELECTRICAL CHARACTERISTICS........................................................... 15
7.1 DC-DC SYNCHRONOUS BUCK CONVERTERS ............................................... 15
7.2 DC-DC STEP UP CONVERTER ......................................................................... 17
7.3 CURRENT SINKS................................................................................................ 17
7.4 LDO REGULATORS............................................................................................ 18
7.5 RESET THRESHOLDS ....................................................................................... 22
7.6 REFERENCES .................................................................................................... 22
7.7 BATTERY CHARGER ......................................................................................... 23
7.8 USB POWER CONTROL .................................................................................... 24
7.9 GENERAL PURPOSE INPUTS / OUTPUTS (GPIO)........................................... 24
7.10
7.11
7.12
7.13
DIGITAL INTERFACES.................................................................................... 25
AUXILIARY ADC .............................................................................................. 25
SYSTEM STATUS LED DRIVERS................................................................... 25
CLOCKING....................................................................................................... 25
8
9
TYPICAL POWER CONSUMPTION ........................................................... 26
TYPICAL PERFORMANCE DATA.............................................................. 27
9.1 DC-DC CONVERTERS ....................................................................................... 27
9.2 LDO REGULATORS............................................................................................ 27
10 SIGNAL TIMING REQUIREMENTS............................................................ 28
10.1
CONTROL INTERFACE................................................................................... 28
11 DEVICE DESCRIPTION.............................................................................. 30
11.1
11.2
11.3
11.4
11.5
11.6
11.7
GENERAL DESCRIPTION............................................................................... 30
POWER STATES ............................................................................................. 30
POWER STATE CONTROL............................................................................. 32
POWER STATE INTERRUPTS........................................................................ 37
POWER STATE GPIO INDICATION................................................................ 37
ON PIN FUNCTION.......................................................................................... 38
RESET PIN FUNCTION ................................................................................... 39
12 CONTROL INTERFACE.............................................................................. 41
12.1
12.2
12.3
12.4
12.5
12.6
GENERAL DESCRIPTION............................................................................... 41
2-WIRE (I2C) CONTROL MODE...................................................................... 41
4-WIRE (SPI) CONTROL MODE...................................................................... 44
REGISTER LOCKING ...................................................................................... 44
SOFTWARE RESET AND CHIP ID.................................................................. 45
SOFTWARE SCRATCH REGISTER................................................................ 45
PP, May 2012, Rev 3.1
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
