eKA8564A
USB Audio Controller
1 General Description
The eKA8564A is a USB digital audio controller with audio data processing that
supports 16-bit 2-channel format at 48kHz, 44.1kHz, 32kHz or 8kHz sampling rate.
2
The device has an integrated USB transceiver, USB core, MCU, DAC, ADC, and I S
Input/Output. It can handle a high-level USB protocol, and manages user interface via
HID I/O pins.
2 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 48kHz, 44.1kHz, 32kHz, 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
2K×13 on-chip program ROM
32 bytes of general purpose RAM (R20~R3F)
RC Oscillator with internal RC
5 level stack for subroutine nesting
Total of 8 HID control pins (Mute Speaker, Volume Down, Volume Up, Mute REC,
Play/Pause, Stop, Scan next track, Scan previous track)
Total of 4 LED output pins (REC Mute LED, Power LED, Play LED, SPK Mute LED)
MCU run at 6 MHz frequency
Package: 48-pin LQFP
Product Specification (V0.1) 09.08.2006
•1
(This specification is subject to change without further notice)