Description
BU8776KN is PCM CODEC deveolped for digital cellular phones. High-precision linear CODEC and each audio part are integrated into a single chip by mixed signal technology. Compact and thin QFN48U package is adopted.

Features
1) +3V single power supply (VDD=2.7~3.3V)
2) 14bit high-precision linear µ/A-LAW CODEC
3) Transmission filter in CODEC (Based on ITU-T G.714)
4) Built-in PLL circuit for generating system clock
5) Built-in DSP I/F for PDC, N-CDMA
6) Serial I/F for register setting adapted for 3-wire serial type
7) Selectable PCM data transmission clock frequency
    µ/A-LAW 64kHz~2048kHz
    Linear 128kHz~2048kHz
8) Wide variety of Analog I/O functions
    * Built-in two microphone amplifiers (Differential input type, single input type)
    * Built-in speaker amplifier for receiver (32 BTL type)
    * Built-in speaker amplifier for earphone (32 single type)
    * Built-in driver amplifier for receiving REXT (600 )
    * Built-in electronic volume for gain control (Receiving, Transmitting, TONE)
    * Built-in deta signal I/O circuit can connect outside
    * REXT, earphone, and receiver output reduce the pop noise by soft mute when power is ON/OFF.
9) QFN48U small, thin package

Applications
    PDC/CDMA/GSM type digital cellular phones