01W127A PCM CODEC for Digital cellular phones BU8776KN Dimension (Units : mm) 7.2 ± 0.1 7.0 ± 0.1 1.4 ± 0.1 0.6 +0.1 -0.3 36 25 24 4 0. 3- 48 0.1 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 0.18 ± 0.05 13 1 0.4 0.05 M 0.2 ± 0.05 Features 12° 12 12° 0.01+0.03 -0.007 0.6 ± 0.1 0.8 +0.2 -0.1 8± 0.1 .1 0 .3 + 0 5- .1 0 .4 + 0 5- 7.2 ± 0.1 7.0 ± 0.1 37 5 0. 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. 0.05 QFN48U Applications PDC/CDMA/GSM type digital cellular phones November, 2001 ●Application Circuit Frame Synchronizing signal TEXT C11 28 MIC2O 29 TAUDO 30 TXVDD 31 TEXTADD 32 TEXTDI 33 TEXTDO 34 ＋ C1 R8 PLLLPF 35 FSYNC 36 STB SCL SDA 8KHz 27 ＋ MIC2IN CPUへ 26 R7 25 SW8 RESET MIC1O 24 SW12 37 XPRSTB CPU I/F PLL − 3-TONE DTMF GEN 39 DVSS EV7 D/A EV1 VREF/ COMMON SW4 5 6 7 ERPO SPPO ＋ 7 8 R2 ＋ ＋ ＋ − R4 10 11 C2 C1 ON by VOPON or TGPON ON by SPON ON by RXPON ON by EARON R3 1µ 0.22µ ＋ Speaker for earphone Dynamic type 32 C7 12 C5 R1 REXT ON by TGPON 1µ EAmp2 9 SPPO 6 RXVSS 13 SPCOP − ＋ ERPN 5 EARO 14 − Amp4 ERPO 4 RXVDD 15 − SPCON ＋ AUDO 3 AUDVR RIN EXTO REXTDI REXTDO ON by VCPON 2 ＋ ＋ SPPN EV2 Amp5 SW9A SW9B 1 SMUTE 16 EAmp1 RAmp 48 ＋ SPOUT EV5 EV6 Amp3 Amp7 ＋ 47 NC SPMT ＋ ＋ ＋ − ＋ 1µ RXREF 17 − ERMT Typical external circuit constant ＋ 2.2µ CODECREF ＋ 18 JAmp EXTSEL − ＋ TXREF 20 REFC 19 SOFTMUTE 46 TSTOUT ON by REFPON EV0 AAF EV4 15 45 TSTIN LPF SW14 "L" fixed A/D ＋ 44 TSTMOD TXVSS 21 ＋ ＋ "L" fixed MIC Amp ＋ BPF 42 DCLK "L" fixed R5 EV3 DSP I/F ＋ − 3 TONE D/A C9 C8 MIC1IP 22 1 2 41 PCMIN 43 CPUSEL ＋ − 40 PCMOUT To DSP MIC Amp2 SW0 Amp1 ＋ R6 MIC1IN 23 ＋ 38 DVDD C6 R1:100k R2:100k R3:100k R4:100k R5:5.6k R6:100k R7:5.6k R8:100k C1:0.1µ C2:470p C3:0.1µ C4:470p C5:0.1µ C6:0.1µ C7:0.1µ C8:2.2µ C9:470p C10:2.2µ C11:470p C4 Speaker for receiver Dynamic type 32 C3 ●Comparision table BU8776KN BU8730KV BU8732AKV BU8731KV BU8733KV PCM CODEC PCM CODEC PCM CODEC PCM CODEC PCM CODEC Supply voltage range 2.7~3.3V 2.7~3.3V 2.7~3.3V 2.7~3.3V 2.7~3.3V Operating mode consumption current (TYP.) Stand-by mode consumption current (TYP.) 8.0mA 8.2mA 8.0mA 8mA 5.4mA 0.1µA 0.1µA 0.1µA 0.1µA 0.1µA · Digital · Digital · Digital · Digital · Digital Part No. Function Filter structure Dynamic receiver driving Speaker output form BTL BTL BTL BTL BTL Speaker output load 32 20k 32 32 32 Amplifier for earphone Tone generation Tone pattern DTMF DTMF · Triple tone DTMF DTMF DTMF 16Hz warble Each for GSM 16Hz warble 16Hz warble 16Hz continuation Soft mute function Soft mute function Soft mute function Soft mute function Soft mute function Gain control Mute function Power down function Power down in each block Power down in each block Power down in each block Power down in each block Power down in each block DAI(Digital Audio Interface) Side tone Inside(Gain control) Inside(Gain control） Inside(Gain control） Auxiliary analog input Single end x2 Outside(No gain control) Inside(Gain control） Single end Single end x2 Single end x2 Single end Auxiliary analog output Single end x2 Single end Single end x2 Single end x2 Single end Gain control Gain control Gain control Ringer direct driving PCM format Package µ/A-LAW･ Linear Linear µ/A-LAW･Linear µ/A-LAW·Linear µ/A-LAW·Linear QFN48U VQFP48 VQFP48 VQFP48 VQFP48