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?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 HXJ2314 ?? cmos ???ic HXJ2314 (volume) ? (balance) (treble & bass) (loudness) ??? (selectable input gain) ????? HXJ2314 ?????????? HXJ2314 ?? (i 2 c bus) ?????? HXJ2314 ???? pcb ??? ??y?? ? 1. ? 2. ? 3. ? 4. ? 4 5. ?? / ?? 6. ? 2 7. 8. ?? 1.25db 9. ? 10. ??? 11. ?i2c ?? ? 1. 2. ?? (hi-fi audio system) ?? ??sop-28 ?? www..net
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ? i/o 1 v dd - ?? 2 agnd - ?? 3 treb_l i 4 treb_r i / ? 5 rin i ?? 6 rout o ??? 7 loud_r i ?? 8 rin4 i 9 rin3 i 10 rin2 i 11 rin1 i ??/ / / ? 12 loud_l i ?? 13 lin4 i 14 lin3 i 15 lin2 i 16 lin1 i ??/ / / ? 17 lin i ?? 18 lout o ??? 19 bin_l i 20 bout_l o ?/ ? 21 bin_r i 22 bout_r o ?/ ? 23 out_r o 24 out_l o 25 dgnd - ? 26 data i ?(data) 27 clk i ?(clock) 28 ref - ?(1/2 v dd )
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ? volume & loudness bass treble serial bus decoder & latches bass treble volume & loudness rb rb input selector & gain control lin1 lin2 lin3 rin1 rin2 rin3 speaker att mute speaker att mute supply lin1 lin2 lin3 rin1 rin2 rin3 vdd agnd ref rout rin loud_r bout_r bin_r treb_r out_r data dgnd clk out_l lout lin loud_l bout_l bin_l treb_l lin4 lin4 rin4 rin4 ?i 2 c bus interface ? dataclk ?? HXJ2314 ???? ? data clk ??? ?? data validity clk ???? data line ????????? clk ???? data line ????? data line stable data valid data change allowed data clk
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ?? start and stop conditions 1 clk ?????2 data ??????????? 1 clk ?????2 data ??????????? ? clk data start stop ?? byte format ??? data line ? byte ?? bit ??????? msb ?????? ??? acknowledge ??????? data line ?????? HXJ2314 ???? data line ?? HXJ2314 ?? data line ????????? ??? HXJ2314 ???? byte ????????? clock ?data line ?????? 1234 789 msb acknowledgement from receiver start clk data ?????? transmission without acknowledge ??? HXJ2314 ??????????????? HXJ2314 ???? byte ????? clock ????????? ????? interface protocol 1 ?start 2 HXJ2314 ? address ??????? 0 HXJ2314 ??? HXJ2314 ??? 3 ?n ?+ ?? 4 stop
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ? HXJ2314 address msb first byte lsb msb lsb msb lsb start 1 0 0 0 1 0 0 0 ack data ack data ack stop data transmitted(n-bytes+acknowledge) ? :ack= acknowledge ?? =100k bits/s ? data byte ?? software specification HXJ2314 ? address HXJ2314 ?? 1 msb 0 0 0 1 0 0 0 lsb ? data bytes msb lsb 0 0 b2 b1 b0 a2 a1 a0 1 1 0 b1 b0 a2 a1 a0 ? 1 1 1 b1 b0 a2 a1 a0 ? 0 1 0 g1 g0 s2 s1 s0 / / 0 1 1 0 c3 c2 c1 c0 0 1 1 1 c3 c2 c1 c0 ax=1.25db/steps bx=10db/stpes cx=2 db/stpes gx=3.75 db/stpes volume ??????? 45db ? 00100100 ?? msb lsb 0 0 b2 b1 b0 a2 a1 a0 ? 1.25db ? 0 0 0 0db 0 0 1 -1.25db 0 1 0 -2.5db 0 1 1 -3.75db 1 0 0 -5db 1 0 1 -6.25db 1 1 0 -7.5db 1 1 1 -8.75db 0 0 b2 b1 b0 a2 a1 a0 ? 10db ? 0 0 0 0db 0 0 1 -10db 0 1 0 -20db 0 1 1 -30db 1 0 0 -40db 1 0 1 -50db 1 1 0 -60db 1 1 1 -70db
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ? (speaker attenuators) ??????, , ? 25db, ?11110100? ?? msb lsb 1 1 0 b1 b0 a2 a1 a0 ? 1 1 1 b1 b0 a2 a1 a0 ? 0 0 0 0db 0 0 1 -1.25db 0 1 0 -2.5db 0 1 1 -3.75db 1 0 0 -5db 1 0 1 -6.25db 1 1 0 -7.5db 1 1 1 -8.75db 0 0 0db 0 1 -10db 1 0 -20db 1 1 -30db 1 1 1 1 1 mute / / (audio switch data byte) ??/ / ??? 2 7.5db ?? 01001001 ?? msb lsb 0 1 0 g1 g0 s2 s1 s0 0 0 1 0 1 2 1 0 3 1 1 4 0 on 1 off 0 0 +11.25db 0 1 +7.5db 1 0 +3.75db 1 1 0db
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ?? (bass and treble data bytes) ????????-10db ?? ?01100010? ?? msb lsb 0 1 1 0 c3 c2 c1 c0 bass 0 1 1 1 c3 c2 c1 c0 treble 0 0 0 0 -14 db 0 0 0 1 -12 db 0 0 1 0 -10 db 0 0 1 1 -8 db 0 1 0 0 -6 db 0 1 0 1 -4 db 0 1 1 0 -2 db 0 1 1 1 0 db 1 1 1 1 0 db 1 1 1 0 2 db 1 1 0 1 4 db 1 1 0 0 6 db 1 0 1 1 8 db 1 0 1 0 10 db 1 0 0 1 12 db 1 0 0 0 14 db ?? vs ? 10.5 v tamb ? -40~+85 tstg F? -65~+150 ? ? ?? ? vs ?? 6 9 10 v v cl ?? 2 2.5 vrms thd ? (v=1vrms f=1khz) 0.07 0.15 % s/n ? 95 db sc ? f=1khz 85 db ?? 1.25db -75 0 db ?, ? 2db -14 +14 db ??, ? 1.25db -37.5 0 db , ? 3.75db 0 11.25 db ? 85 db
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ? tamb=25 vdd=9v rl=100k ? rg=600???g=0 f=1khz ? ?? ? ?? v dd ?? 6 9 10 v i s ? 30 40 ma ? r ii 1 2 3 4 35 50 70 k v cl ? av=-8.75 db,d=0.3% 2 2.5 vrms s in ?2 80 100 db g inmin -1 0 1 db g inmax 11.25 db c range ? 65 70 75 db a vmin ?? -1 0 1 db a vmax ?? 65 70 75 db a step 0.5 1.25 1.75 db e a ? av=0~-20 db av=-20~-60 db -1.25 -3 0 1.25 2 db db ? c range ? 35 37.5 40 db s step 0.5 1.25 1.75 db e a ? 1.5 db a mute ? 70 75 db (1) gb ? boost/cut 12 14 16 db b step 1 2 3 db r b b ? 34 44 58 k
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ? ?? ? (1) gt ? boost/cut 13 14 15 db t step 1 2 3 db v oscl ? av=-8.75db,d=0.3% 2 2.5 vrms r out - 40 45 v out ??? 4.2 4.5 4.8 v ? bw=20-20khz, flat output mute all gain=0 db -97 -92 db db no ? a curve all gain=0 db -100 db s/n ? all gain=0db vo = 1 vr m s 95 db d ? av=0 vin=1vrms av=-8.75db vin=1 vrms av=-8.75db vin=0.3 vrms 0.1 0.07 0.03 0.3 0.15 0.1 % % % sc / ? 80 90 db v il ??? 1 v v ih ??? 3 v i in -5 +5 ua v o ? sda? io=1.6ma 0.4 v ? 1 ??????????? 2 ???? 2.2uf ??
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 HXJ2314 ??? HXJ2314 vs ???? c12=c13=100nf HXJ2314 c12 c13 ???? volume=-40db, all other control flat
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ??? r c3 2.2u r c7 2.2u tape r c2 2.2u r c6 2.2u cd r c1 2.2u r c5 2.2u am/fm player tuner vdd 22u c9 2.2u c10 100n c12 100n c14 100n c15 r1 5.6k 2.7n c18 mcu c11 2.2u c13 100n c16 100n r2 5.6k c17 100n c19 2.7n rin1 rin2 rin3 lin1 lin2 lin3 vdd agnd ref rout rin loud_rbout_r bin_r treb_r out_l out_r treb_l bin_l bout_l loud_l lin lout clk data dgnd c20 10u c21 10u r c4 2.2u r c8 2.2u rin4 lin4 1 2 3 4 5 67 8 9 10 11 12 13 14 15 16 1718 19 20 21 22 23 24 25 26 27 28 + + + + + + + + + + + + + tape ?1 c12~c19 ? mylar ? 2 r ?? 2k ~3.6 k ???2.4 k ?
?? HXJ2314 ? ????? www.szhexingjian.cn.alibaba.com www.hexingjian.com ?? 1326-1333 0755-83692256 / 83692276 0755-83358589 ??? sop-28 ??? symbol min nom max a 2.35 2.65 a1 0.10 0.30 b 0.33 0.51 c 0.23 0.32 d 17.70 18.10 e 7.40 7.60 e 1.27 bsc h 10.00 10.65 h 0.25 0.75 l 0.40 1.27 0 8

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