3URJUDPPHV $IWHU 0DUNHW 6HUYLFHV 13/ 6HULHV &HOOXODU 3KRQHV $XGLR 6\VWHP ,VVXH $SULO 1RNLD &RUSRUDWLRQ 3DJH
NPL-1 3 - Audio System PAMS Technical Documentation 7DEOH RI &RQWHQWV 'HVFULSWLRQ 3DJH 1R ,QWURGXFWLRQ $EEUHYLDWLRQV 7HFKQLFDO RYHUYLHZ
NPL-1 3 - Audio System PAMS Technical Documentation 'HVFULSWLRQ 3DJH 1R /LVW RI )LJXUHV FRQWLQXHG )LJXUH )LJXUH )LJXUH )LJXUH )LJXUH )LJXUH )LJXUH )LJXUH )LJXUH 6NHWFK RI EX]]HU DFRXVWLF GHVLJQ 0HFKDQLFDO EX]]HU DVVVHPEO\ 7\SLFDO EX]]HU IUHTXHQF\ UHVSRQVH
NPL-1 3 - Audio System PAMS Technical Documentation 7KLV SDJH KDV EHHQ LQWHQWLRQDOO\ OHIW EODQN 3DJH 1RNLD &RUSRUDWLRQ ,VVXH $SULO
NPL-1 3 - Audio System PAMS Technical Documentation ,QWURGXFWLRQ 7KLV &KDSWHU VSHFLILHV WKH $XGLR KDUGZDUH IRU WKH 13/ SURJUDP $EEUHYLDWLRQV 8(0 8QLYHUVDO (QHUJ\ 0DQDJHPHQW 833 8QLYHUVDO 3KRQH 3URFHVVRU 8,) FRGHF 8VHU ,QWHU)DFH &RGHF LQ 833 9%$7 0DLQ EDWWHU\ YROWDJH 3:0 3XOVH :LGWK 0RGXODWHG VLJQDO 08; 08OWL3OH[HU *1' 3KRQH JURXQG /*1' *1' DEEUHYLDWLRQ LQ 6\VWHP FRQQHFWRU 6*1' 6LJQDO JURXQG ¤ UHIHUHQFH IRU PLFURSKRQH 0&8 0LFUR&RQWUROOHU 8QLW 3:% 3ULQWHG :LUH %RDUG (53 (DU 5H
EADSET / LOOPSET 3DJH 1RNLD &RUSRUDWLRQ HP 1 HP 3 Boomer +8.2 dB EARPIECE HeadInt HP 2 CARK-91 MIC FBUS Rx FBUS Tx MBUS HookInt HFCM HF EARN EARP MIC3N MIC3P MIC2N MIC2P MIC1N MIC1P BUZZO Anti-alias filter M A VIBRA D SC DAC Vibra Driver PWM -30 - 0dB 0-22.5dB Buzzer Driver PWM MUX EARDATA MICDATA CBUS FBUS Rx FBUS Tx A D Figure 1.
NPL-1 3 - Audio System PAMS Technical Documentation 3DUW /LVW $OO LQYROYHG NH\ SDUWV DUH OLVWHG LQ WKH IROORZLQJ WDEOH $V VHHQ LQ WKH WDEOH WKHUH LV RQO\ RQH YHQGRU IRU VRPH RI WKH DXGLR DQG YLEUDWLRQ NH\ FRPSRQHQWV 7DEOH 3DUWV OLVW 1$0( 2) 7+( 68% 02'8/( &20321(17 '(6,*1$7,21 9(1'25 0$7(5,$/ &2'( %X]]HU 0&& $&6 67$5 (DUSLHFH 7<3( :' 8 &2'( 3+,/,36 (DUSLHFH 6\VWHPV (DUSLHFH /7 .,5.
NPL-1 3 - Audio System PAMS Technical Documentation '& &KDUDFWHULVWLFV The audio relevant supply voltages are shown in the following table: 7DEOH Supply Voltages Line Symbol Vana Minimum TYP. / Nominal Maximum Unit 2.7 2.78 2.86 V 80 mA 0,005 VBAT Vflash1 Vflash2 (Mic bias buffer) Min. due to regulator stability 3.1 (SW) (2.9 (HW)) 3.6 5.1 (SW) (5.4 (HW)) V (Buzzer and Vibra driver). Min and max due to SW cut off. 2.7 2.78 2.86 V (DLR3, HEADINT and HOOKINT pull up) 0.
NPL-1 3 - Audio System PAMS Technical Documentation ,Q FDVH RI %7 DXGLR WKH %7 DFFHVVRU\ DQG WKH SKRQH LV FRQQHFWHG E\ ERWK DQ $&/ DQG 6&2 DLU OLQN $&/ LV XVHG IRU FRQQHFWLRQ FRPPDQGV DQG 6&2 IRU WKH DFWXDO DXGLR WUDQVPLVVLRQ ,Q ERWK FDVHV WKH %7 PRGXOH LQ DFFHVVRU\ DQG SKRQH UHFHLYHV WKH DXGLR VLJQDO ,Q WKH SKRQH WKLV VLJQDO LV URXWHG IURP %7 PRGXOH RYHU /35) WR '63 ZKHUH LW IROORZV WKH UHJXODU DXGLR SDWK WKURXJK RXW WKH UHVW RI WKH V\VWHP 7KH %7 PRGXOH DQG 0&8 LV FRQQHFWHG E\ WKH &%86 IRU H[F
NPL-1 3 - Audio System PAMS Technical Documentation 7UDQVPLW JDLQ YDULDWLRQ ZLWK IUHTXHQF\ ¤ +] G% 7UDQVPLW JDLQ YDULDWLRQ ZLWK VLJQDO OHYHO ! G%P G% G%P G% 5HFHLYH JDLQ DEVROXWH DFFXUDF\ G% 5HFHLYH JDLQ YDULDWLRQ WHPSHUDWXUH VXSSO\ G% 5HFHLYH JDLQ YDULDWLRQ ZLWK IUHTXHQF\ ¤ +] G% 5HFHLYH JDLQ YDULDWLRQ ZLWK VLJQDO OHYHO ! G%P G% G%P G% '63 *DLQ ,QLWLDOO\ WKH '63
NPL-1 3 - Audio System PAMS Technical Documentation ZHOO GHILQHG OHDNDJH DV NQRZQ IURP WKH 13( SURMHFW 7KLV LV GRQH WR KDYH D EHWWHU SHU IRUPDQFH LQ WKH IUHTXHQF\ DUHD IURP ¤ N+] DQG WR SUHYHQW WKH SRVVLELOLW\ RI DQ DFRXVWLF IHHGEDFN ORRS LQVLGH WKH SKRQH PHFKDQLFV 7KHUH LV QR VHDOLQJ EHWZHHQ WKH HDUSLHFH DQG WKH 3:% 7KHUH DUH DOVR KROHV WKURXJK WKH 3:% WR PDNH WKH GHVLJQ PRUH OHDN WROHUDQW E\ XVLQJ WKH YROXPH EHWZHHQ 3:% DQG WKH % FRYHU $ &RYHU RU ZLQGRZ FRQWDLQV IURQW DQG OHDNDJH KROHV
NPL-1 3 - Audio System PAMS Technical Documentation Figure 3. Mechanical assembly of Earpiece and Vibra Specified frequency response curve for the NPL-1 design (mechanics and Audio): SPL Response [dBPa] 30 20 10 0 -10 -20 -30 100 1000 10000 Frequency [Hz] Typical Response Upper Limit Lower limit Figure 4.
PAMS Technical Documentation NPL-1 3 - Audio System Absolute Sensitivity (Low leak): 26 dBPa/V ±3dB @ 1kHz. (0 dB on Figure 4. Earpiece frequency response - ERP corrected – non DSP corrected) Figure 5. DAI receiving frequency response, B4.
NPL-1 3 - Audio System PAMS Technical Documentation (DU RXWSXW VSHFLILFDWLRQV IURP WKH 8(0 VSHFLILFDWLRQV 7DEOH 8(0 (DU RXWSXW VSHFLILFDWLRQ Parameter Test condition Min Typ 2.5 Max Units Output swing @ 0dBm0, GR=-6 dB VASwing 2.36 Output voltage swing With 60 dB signal to total distortion ratio 4.0 Output resistance PDM data with 50 % pulse ratio in the DAC input 1.
NPL-1 3 - Audio System PAMS Technical Documentation 6NHWFK RI 0LFURSKRQH $FRXVWLF 'HVLJQ Systemconector sound outlet Mic Rubber Gasket Volume System connector Connection springs Figure 7. Microphone Acoustical Design $EVROXWH 6HQVLWLYLW\ G%9 3D ± G% # N+] Figure 8. DAI Sending frequency response, B4.
NPL-1 3 - Audio System PAMS Technical Documentation 0LFURSKRQH (OHFWULFDO ,QWHUIDFH 7KH PLFURSKRQH HOHFWULFDO FLUFXLW LQFOXGHV IHUULWH EHDGV IRU FRPPRQ PRGH QRLVH UHMHF WLRQ WRJHWKHU ZLWK FDSDFLWRUV IRU ILOWHULQJ WKH 0+] VLJQDO DQG WZR YDULVWRUV IRU (6' SURWHFWLRQ SODFHG QHDU WKH PLFURSKRQH 3:% VSULQJ SDGV 7KH Q) & IRUPV D ORZ SDV ILOWHU WRJHWKHU ZLWK WKH PLFURSKRQH LPSHGDQFH WR PDNH D VWHHSHU UROH RII DW KLJK IUHTXHQFLHV $OVR DQ H[WUD +LJK SDVV ILOWHU 5 & LV DGGHG WR OLPLW
NPL-1 3 - Audio System PAMS Technical Documentation 8(0 PLFURSKRQH LQSXW VSHFLILFDWLRQ 7DEOH Microphone input specifications Parameter Symbol Min Typ Microphone amplifier input resistor RM30 30 50 Differential input voltage range for MIC1 input, G =20 dB VIN1 200 VHFCM 100 Receive Common mode input voltage range for MIC input 1.3 1.35 Max Unit kOhm 1200 m VPP m VPP Common mode voltage level VCM 1.
NPL-1 3 - Audio System PAMS Technical Documentation %X]]HU $FRXVWLF 'HVLJQ Buzzer Resonance Chamber Volume Sound Port Buzzer Spring Contacts A-Cover PCB Rubber gasket Figure 10. Sketch of Buzzer Acoustic Design 7KH LPSRUWDQW SDUDPHWHUV LQ WKLV GHVLJQ DUH WKH IURQW FDYLW\ DQG WKH VRXQG SRUWKROHV Figure 11.
NPL-1 3 - Audio System PAMS Technical Documentation %X]]HU (OHFWULF ,QWHUIDFH 7KH GULYHU FLUFXLW LV DQ LQWHJUDO SDUW RI WKH 8(0 UEM VBATDriv 5kOhm +/- 35% VBAT 1 uF BUZZER BUZZO BUZZPWM VSADriv2 12 pF Figure 13. Buzzer driver circuit. 7DEOH Buzzer driver specifications Parameter Variable Output switch resistance Rbuzzo Output peak sink current Iout VBAT Output peak sink voltage Uout VBAT Min Typ Max Unit 1.0 2.7 4.5 Ohm 120 180 350 mA 0.5 1.
NPL-1 3 - Audio System PAMS Technical Documentation :KHQ EX]]HU 'LJ(QD WKHQ D 3:0 VLJQDO LV SUHVHQW DW %8==3:0 7KH EX]]HU GXW\ F\FOH LV GHILQHG E\ Duty Cycle = BPWMDCR (5 : 0) * 0.
NPL-1 3 - Audio System PAMS Technical Documentation 7DEOH Vibra driver specifications Parameter Variable Output swhich resistance Rvibra Output average current Ivibra VBAT Output peak current Ipeak VBAT Min Typ Max Unit 1.4 4.2 7.5 Ohm 50 80 135 mA 300 mA Output frequency Fvibra 64 129 520 Hz Output duty cycle Dvibra 2.9 47 96.9 % 0.30 A 2.3 Vdc 1 uA Reverse diode peak current Iforw tp = 10 us Motor average dc Udc_motor VBAT=3.0 ... 4.5 V 1.
NPL-1 3 - Audio System PAMS Technical Documentation +'& 3 LV D SXUHO\ SDVVLYH DXGLR DFFHVVRU\ 7DEOH HDC-9P interface specifications Object Specification Notes Receiver input impedance 150 Ohm +/- 25 % @ 390 mV at 1 kHz Maximum Sound pressure level 106 dB SPL at 1 mW Transmitter output impedance 2200 Ohm +/- 30 % at 1 kHz Transmitter sensitivity - 43.5 dBV/Pa +/- 3 dB at 1 kHz XMIC bias voltage 1.5 V Typical XMIC bias current 1.
NPL-1 3 - Audio System PAMS Technical Documentation 7KH FRLO DPSOLILHU LV VXSSOLHG IURP 0,&% ELDV YROWDJH 1R YRLFH GLDOOLQJ IURP WKH DFFHVVRU\ LV SRVVLEOH ZKLOH WKHUH LV QR KRRNVZKLFK YRLFH GLDO LQJ KDYH WR EH DFWLYDWHG IURP WKH SKRQH NH\SDG 7DEOH LPS-1 interface specifications Object Specification Notes Receiver input impedance 100k Ohm +/- 5 % Magnetic loop Transmitter output impedance 1600 Ohm +/- 30 % at 1 kHz XMIC bias voltage 1.
NPL-1 3 - Audio System PAMS Technical Documentation +): %OXHWRRWK MXQFWLRQER[ ZKLFK UHSODFHV +)8 LQ WKH &DUN VHWXS &8: 5HPRWH FRQWURO %XWWRQ HDUSLHFH YROXPH DQG KRRNVZKLFK $QG DOO WKH FRPSRQHQWV PHQWLRQHG LQ &DUNLW DSDUW IURP +)8 DQG +68 %OXHWRRWK FDUNLW GHYHORSHG LQ WKH 7RPDKDZN SURMHFW '&+ +DQGVIUHH 'HVNWRS 6WDQG 7KH 'HVNWRS 6WDQG LV D GHVNWRS FKDUJHU ZLWK LQWHJUDWHG KDQGVIUHH IXQFWLRQ ([WHUQDO $XGLR ,QWHUIDFH 7KH LQWHUIDFH LV EDVLFDOO\ D ZLUH VROXWLRQ ZKLFK JLYHV WZR FR
NPL-1 3 - Audio System PAMS Technical Documentation R169 2k2 R169 2k2 Figure 15.
NPL-1 3 - Audio System PAMS Technical Documentation 7DEOH Microphone input specifications, external audio Parameter Symbol Min Microphone amplifier gain for MIC 2 / Handsfree MicG2 Microphone amplifier gain for MIC 2 / Headset Typ Max Unit 0 22,5 dB MicG2 22.5 42,5 dB Microphone amplifier input resistor RMIC 30 Differential input voltage range for MIC2 input, 50 kOhm VIN2 200 m VPP VIN2 2.
NPL-1 3 - Audio System PAMS Technical Documentation )LOWHULQJ LQ WKH ERRPHU FLUFXLW +LJKSDVV G% SRLQW +] /RZSDVV G% SRLQW +] 7KH 2KP ZLWK D ORDG RI 2KP UHGXFH WKH RXWSXW OHYHO ZLWK DSSUR[LPDWHO\ G% ;($5 FLUFXLW LQFOXGHV IHUULWH EHDG +) ILOWHU FDSDFLWRU 0+] FXW RII ILOWHU DQG RQH Q) FDSDFLWRU & SODFHG QHDU WKH V\VWHP FRQQHFWRU IRU (0& SXUSRVHV 2Q WKH VLQJOH HQGHG RXWSXW 2KP 5 LV SODFHG WR FRPSHQVDWH IRU WKH KLJK FDSDFL WDQFH RI WKH Q) FRQGH
NPL-1 3 - Audio System PAMS Technical Documentation 7DEOH UEM HF output specifications Parameter Test condition Offset voltage Min Typ -50 Common voltage level for HF output (HF and HFCM) VCMHF Pull down resistor value in HF output RPD Pull down swhich resistance in HFCM output RSW Max Unit 50 mV 0.75 0.8 0.85 V 3 10 25 kOhm 400 Ohm +($',17 DQG +22.
NPL-1 3 - Audio System PAMS Technical Documentation 7KH FRQILJXUDWLRQ IRU WKH ERWWRP FRQQHFWRU LV VKRZQ LQ WKH IROORZLQJ ILJXUH Rubber boot Microphone 2 3 Solderable element, 2 pcs 4 8 13 Contact 1 DC-jack 2,3,4 Contact 5 14 Contacts 8...13 Contact 14 Microphone port Cable/Cradle connector guiding/fixing hole, 3 pcs Figure 17.
NPL-1 3 - Audio System PAMS Technical Documentation 7DEOH System connector pin assignment Pin Name Min 8 XMIC 2.0 Typ Max Unit Notes 2.2 kΩ Input AC impedance 1 Vpp Maximum signal level 0 1.55 V Mute (output DC level) 2.5 2.9 V Unmute (output DC level) 100 600 µA Bias current from UEM 2 Vpp Microphone signal (Gain 0 dB) Connected to UEM MIC3P + MIC2P input 9 SGND 330 Ω Resistance to phone ground, return path for XMIC.
NPL-1 3 - Audio System PAMS Technical Documentation $FFHVVRU\ 'HWHFWLRQ ,GHQWLILFDWLRQ DQG &RQWURO $FFHVVRU\ 'HWHFWLRQ $FFHVVRULHV DUH GHWHFWHG ZKHQ WKH ;0,& VLJQDO LV ORDGHG ZLWK HLWKHU '/5 /RRSVHW RU +HDGVHW 7KH LQWHUUXSW LV JHQHUDWHG E\ SXOOGRZQ UHVLVWRUV LQ WKH UHVSHFWLYH DFFHVVRULHV &DUNLW LV GHWHFWHG YLD FRPPXQLFDWLRQ RQ WKH 0%86 OLQH %7 DFFHVVRULHV DUH FRQQHFWHG DIWHU %7 FRQQHFWLYLW\ LV FKRVHQ LQ 8, &RPPXQLFDWLRQ ZLWK 8(0 LV GRQH RYHU WKH &%86 OLQHV $FFHVVRU\ ,GHQWLILFDWLRQ 7KH YROWDJH
NPL-1 3 - Audio System PAMS Technical Documentation $FFHVVRU\ &RQWURO +HDGVHW DQG /RRSVHW ,Q WKH +'& 3 WKH KHDGVHW EXWWRQ LV HOHFWULFDOO\ FRQQHFWHG DFURVV WKH ;($5 DQG / *1' OLQHV :KHQ WKH +HDGVHW EXWWRQ LV DFWLYDWHG ;($53 LV VKRUW FLUFXLWHG WR / *1' DQG D +22.
NPL-1 3 - Audio System PAMS Technical Documentation Control circuit HFU-2 HFS-12 26 dB Audio Interface System connector MBUS HFM-8 30 dB UEM MBUS MCC-1 External audio sheet System connector MBUS MBUS EMI Filter Figure 18. Carkit audio interface. Block diagram. &$5. 7KLV FDUNLW LV D SDVVLYH NLW DQG LV MXVW D KROGHU IRU WKH SKRQH 1R GHWHFWLRQ LV GRQH DQ\ ZKHUH &$5.
NPL-1 3 - Audio System PAMS Technical Documentation 7KLV SDJH KDV EHHQ LQWHQWLRQDOO\ OHIW EODQN 3DJH 1RNLD &RUSRUDWLRQ ,VVXH $SULO
