www.austriamicrosystems.com

Revision 0.12

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AS3543

Preliminary Product Brief -

Microphone Input

3 gain pre-setting (28dB/34dB/40dB) and AGC

2 gain steps @1.5dB and MUTE

supply for electret microphone

microphone detection

remote control by switch

2 Line Inputs

volume control via serial interface

32 steps @1.5dB and MUTE

stereo or 2x mono

Audio Mixer

6 channel input/output mixer with AGC

mixes line inputs abd microphone with DAC

left and right channels independent

Power Management

Voltage Generation

step down for CPU core (0.61V-3.35V, 250mA)

step down for peripheral (0.61V-3.35V, 250mA)

LDO1 for AFE supply (1.7V (1.65-3.2V), 50mA)

LDO2 for AFE supply (2.7V (2.3-3.5V), 200mA)

LDO3 for peripherals (1.2V-3.5V, 100/200mA)

LDO4 for peripherals (1.2V-3.5V, 100/200mA)

VBUS comparator

separate input for LDO3

power supply supervision & hibernation modes

5sec and 10sec emergency shut-down

Backlight Driver

step up for backlight (25V)

current control mode (1.2-36mA)

voltage control mode

2 current sinks

automatic dimming

over-voltage protection

Battery Charger

automatic trickle charge (55mA)

prog. constant current charging (55-460mA)

prog. constant voltage charging (3.9V-4.25V)

current limitation for USB mode

integrated battery switch

General

Supervisor

automatic battery monitoring with interrupt genera-

tion and selectable warning level

automatic temperature monitoring with interrupt

generation and selectable warning and shutdown

levels

Real Time Clock

ultra low power 32kHz oscillator

32bit RTC sec counter, 96 days auto wake-up

selectable alarm (seconds or minutes)

128bit free SRAM for random settings

32kHz clock output to peripheral

voltage generation

trim able oscillator

<1uA total power consumption

Auxiliary Oscillator (system clock generation)

low power 12-24MHz oscillator

clock output

General Purpose ADC

10bit resolution

19 inputs analog multiplexer

Interfaces

2 wire serial control interface

reset pin with selectable delay, power good pin

64bit unique ID (OTP)

22 different interrupts

Package CTBGA68 [6.0x6.0x1.1mm] 0.5mm pitch

Applications

Portable Digital Audio/Video Player and Recorder

PDA, Smartphone