BU94702ARKV is an MP3 encoder + WAV/AAC/WMA/MP3 decoder IC which contains program download function from external serial Flash ROM and contains USB host, SD card I/F, CD-ROM I/F, audio DAC, system controller, regulator for internal CORE power supply.
The BU94702AKV is a semiconductor audio decoder IC that integrates USB‑host, SD‑card, CD‑ROM interfaces, MP3/AAC/WMA decoding, audio DAC, and system controller functions. It supports both stand‑alone and slave operation modes and includes a programmable regulator for internal core power.
The document provides absolute maximum ratings, operating conditions, detailed electrical characteristics, a block diagram, pin descriptions, and I/O signal specifications such as clock, reset and mode‑selection signals. It also lists typical performance parameters like THD, dynamic range, and power dissipation.
| Supply voltage (Analog, I/O) | 3.0~3.6 V |
|---|---|
| Storage temperature range | -55~125 °C |
| Operating temperature range | -40~85 °C |
| Power dissipation | 900 mW |
| USB interface current | 60~90 mA |
| SD‑card interface current | 35~60 mA |
| Audio DAC THD | 0.005 % |
| Audio DAC dynamic range | 90 dB |
Use the SEL_SLAVE pin: H selects MODE1 (stand‑alone), L selects MODE2 (slave). The selection is only read at power‑on.
RESETX is the system reset input terminal.