pcm codec f or digital cellular phones b u8776kn descr iption dimension (units : mm) f eatures applications 01w127a no v ember , 2001 qfn48u 0.6 0.1 0.2 0.05 7.0 0.1 7.2 0.1 7.0 0.1 7.2 0.1 0.4 0.18 0.05 0.18 0.1 0.05 12 12 0 .01 +0.03 - 0.007 3-0 .45 +0.1 - 0.3 0 .55 0 .6 +0.1 - 0.4 1.4 0.1 +0.1 - 0.3 0 .8 +0.2 - 0.1 0.05 m 12 1 13 24 48 37 25 36 pdc/cdma/gsm type digital cellular phones b u8776kn is pcm codec de v eolped f or digital cellular phones . high-precision linear codec and each audio par t are integ r ated into a single chip b y mix ed signal technology . compact and thin qfn48u pac kage is adopted. 1) +3v single po w er supply (v dd =2.7~3.3v) 2) 14bit high-precision linear /a-la w codec 3) t r ansmission filter in codec (based on itu-t g.714) 4) built-in pll circuit f or gener ating system cloc k 5) built-in dsp i/f f or pdc , n-cdma 6) ser ial i/f f or register setting adapted f or 3-wire ser ial type 7) selectab le pcm data tr ansmission cloc k frequency /a-la w 64khz~2048khz linear 128khz~2048khz 8) wide v ar iety of analog i/o functions *built-in tw o microphone amplifiers (diff erential input type , single input type) *built-in speak er amplifier f or receiv er (32 btl type) *built-in speak er amplifier f or ear phone (32 single type) *built-in dr iv er amplifier f or receiving rext (600 ) *built-in electronic v olume f or gain control (receiving, t r ansmitting, t one) *built-in deta signal i/o circuit can connect outside *rext , ear phone , and receiv er output reduce the pop noise b y soft m ute when po w er is on/off . 9) qfn48u small, thin pac kage
?? application circuit function supply v oltage r ange filter str ucture dynamic receiv er dr iving speak er output f or m speak er output load amplifier f or ear phone t one gener ation t one patter n gain control mute function p o w er do wn function d ai ( digital a udio interf ace ) side tone a uxiliar y analog input a uxiliar y analog output ringer direct dr iving pcm f or mat p ac kage pcm codec 2.7~3.3v 8.0ma 0.1 a digital btl 32 dtmf 16hz w arb le soft m ute function p o w er do wn in each b loc k inside (gain control) single end x2 single end x2 /a-la w linear qfn48u pcm codec 2.7~3.3v 8.0ma 0.1 a digital btl 32 dtmf 16hz w arb le soft m ute function p o w er do wn in each b loc k inside( gain control ?j single end x2 single end x2 gain control /a-la w linear vqfp48 b u8776kn ?? compar ision tab le b u8730kv pcm codec 2.7~3.3v 8.2ma 0.1 a digital btl 20k dtmf t r iple tone each f or gsm soft m ute function p o w er do wn in each b loc k outside (no gain control) single end single end linear vqfp48 b u8732akv b u8731kv pcm codec 2.7~3.3v 8ma 0.1 a digital btl 32 dtmf 16hz w arb le soft m ute function p o w er do wn in each b loc k inside( gain control ?j single end x2 single end x2 gain control /a-la w linear vqfp48 b u8733kv pcm codec 2.7~3.3v 5.4ma 0.1 a digital btl 32 dtmf 16hz contin uation soft m ute function p o w er do wn in each b loc k inside( gain control ?j single end single end gain control /a-la w linear vqfp48 p ar t no . 36 35 34 33 32 31 30 29 28 27 26 25 1 2 3 4 5 6 7 8 9 10 11 12 37 38 39 40 41 42 43 44 45 46 47 48 24 23 22 21 20 19 18 17 16 15 14 13 ?{ ?| ?| ?{ ?| ?{ ?{ ?{ ?{ ?| ?{ ?| ?{ ?| ?{ ?| ?{ ?| ?| ?{ ?{ ?| ?{ ?{ cpu ?? sda scl stb fsync plllpf textdo textdi textadd txvdd taudo mic2o mic2in mic1o xprstb cpu i/f 3-tone dtmf gen bpf tone d/a vref/ common so f tmute dsp i/f a/d aaf ev3 ev0 ev4 ev7 ev6 ev2 ev5 ev1 lpf d/a pll dvdd dvss pcmout pcmin dclk cpusel tstmod tstin tstout nc spout mic1in mic1ip txvss txref refc codecref rxref smute rxvdd earo rxvss c11 c1 r8 frame synchronizing signal text 8khz ?{ ?{ ?{ ?{ ?{ ?{ ?{ ?{ r7 rextdi rextdo exto rin audo audvr erpn erpo sppn sppo spcop spcon reset to dsp "l" fixed "l" fixed "l" fixed sw9a sw9b sw14 sw4 5 6 7 erpo extsel ramp amp7 amp3 sppo 15 ermt spmt jamp eamp1 amp5 am p4 eamp2 r2 c2 rext r1 c1 r4 c4 c5 c6 c7 r3 c3 speaker for receiver dynamic type 32 speaker for earphone dynamic type 32 0.22 ?{ 1 ?{ 1 ?{ 2.2 ?{ ?{ ?{ 1 r5 r6 c9 c8 mic amp mic amp2 amp1 sw0 1 2 3 sw12 sw8 on by refpon on by vcpon on by tgpon on by vopon or tgpon on by spon on by earon on by rxpon r1 : 100k r2 : 100k r3 : 100k r4 : 100k r5 : 5.6k r6 : 100k r7 : 5.6k r8 : 100k c1 : 0.1 c2 : 470p c3 : 0.1 c4 : 470p c5 : 0.1 c6 : 0.1 c7 : 0.1 c8 : 2.2 c9 : 470p c10 : 2.2 c11 : 470p typical external circuit constant oper ating mode consumption current (typ .) stand-b y mode consumption current (typ .)
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