[Actions Semiconductor Co., Ltd.]

Overview
ATC260X is an integrated audio and power management subsystem IC family, which provides a cost effective, single-chip solution for portable multimedia systems. And ATC2605 with an Ethernet PHY build in.
The integrated audio CODEC provides all the necessary functions for high-quality recording and playback, stereo or multi-channel (including 5.1 or 7.1). Programmable on-chip amplifiers allow for the direct connection of headphones and microphones with a minimum of external components. A stereo Class D or Class AB dual mode amplifier is also build in. Digital microphone interface is supported.
ATC260X includes four programmable DC-DC converters, twelve low-dropout (LDO) regulators and two current limit switch to generate suitable supply voltages for each part of the system, on-chip PHY and audio CODEC as well as off-chip components such as a digital core, memory chips, WiFi and sensor modules. Each of these is voltage programmable. The ATC260X can be powered by a lithium battery, by a wall adaptor or USB.
An on-chip battery charger supports both trickle charging and fast (constant current, constant voltage) charging of single-cell Lithium batteries. The charge current, termination voltage, and charger time-out are programmable to suit different types of batteries.

Internal power management circuitry controls the start-up and shutdown sequencing of supply voltages, as well as sleep and wake-up. It also detects and handles conditions such as over-voltage, over-current. The integrated Ethernet PHY is fully compliant with 100BASE-TX and 10BASE-T PMD level standards (IEEE 802.3u, FDDI-TP-PMD, and IEEE 802.3) , with RMII and SMII interface. This function is only included in ATC2605.
A 32.768kHz crystal oscillator should be supplied to ATC260X system to get an accuracy clock for real time clock (RTC) and an alarm function capable of waking up the system. The master clock can be input directly or generated by an crystal oscillator 24MHz or 25MHz.
Resistance Touch Panel, IR, multi-channel ADC capable of waking up function is also integrated. All the information from the Master SOC is configured through SPI interface.