General Description

The eKA8562A is a USB audio controller for USB Phone Applications. The device has an integrated USB transceiver, USB core, dual DAC, ADC, and I2S Input/Output. It can handle a high-level USB protocol, and manages user interface via HID I/O pins.

Features

■ USB Specification v1.1 Compliant

■ USB Audio and Human Interface Device (HID) Class v1.1 Compliant

■ Supports 12 Mbits/s Full Speed Serial Data Transmission

■ Supports 48 kHz, 44.1 kHz, 32 kHz, 8kHz sampling rate

■ Single oscillator: 6MHz

■ Audio buffer size: 192×16 bits × 2

■ Total of four Endpoints : Endpoint 0 for control transfer , Endpoint 1 for audio streaming out , Endpoint 2 for streaming in , Endpoint 3 for HID

■ Supports stereo/mono playback

■ Built-in 2-channel D/A converter with 10-bit resolution

■ Built-in 1-channel A/D converter with 10-bit resolution

■ Alternative settings supported by the audio streaming-out interface:

ALT-0: (default setting) zero isochronous bandwidth

ALT-1: 16-bit PCM 2 channel

■ Alternative settings supported by the audio streaming-in interface:

ALT-0: (default setting) zero isochronous bandwidth

ALT-1: 16-bit PCM stereo

■ 32 bytes of general purpose RAM (R20~R3F)

■ Supports 1 LED output pin

■ Supports 1 Buzzer output pin (2.45 kHz)

■ Supports 24 Button control

■ RC Oscillator with internal RC

■ Package: 48-pin LQFP

Application

■ USB Skype Phone (including key scan and buzzer output)