Ref. No : Rev. No : Issued Date : SPS-2009-012 1.1 2009.5.23 Specifications Product Name : Model No. : 블루투스음성통신모듈 M5G TEL : +82-31-596-6400 FAX : +82-31-596-6410 E-mail : obt@openbrain.co.kr http://www.openbrain.co.kr http://www.sonorix.com
Change History Rev. Date Author Reason for Change 1.1 2009.5.23 초판작성 Internal Check/Approval Name Date Author Checked by Approved by Signature 2
Contents 1. 개요... 4 1.1. 제품의개요... 4 1.2. 제품의특징... 4 1.3. 제품의사양... 4 1.4. 응용범위... 5 1.5. 외관및핀 (PAD) 사양...5 2. 사용방법... 7 2.1. 하드웨어설계방법... 7 2.2. 동작절차... 7 3. 제품의사양... 8 3.1. 전기적사양... 8 3.2. 소비전류... 9 3.3. 안테나방사특성... 10 3.4. 기구적사양... 13 4. 취급시주의사항... 14 4.1. 일반적인주의사항...14 4.2. RF 성능의극대화... 14 5. 신뢰성시험결과... 15 5.1. 동작및보관온도시험결과... 15 5.2. TIME VS TEMPERATURE FOR OPERATING & STORAGE RELATIVE GRAPH... 15 5.3. RADIO CHARACTERISTICS FOR EACH CHECK POINT... 16 6. 포장사양... 20 7. 제품설정 ( 고객주문사항 )... 21 3
1. 개요 본문서는 OPENBRAIN 사가제조하는블루투스음성통신모듈 ( 모델명 :M5G) 의전기적, 기구적 특성을포함한전반적인제품의사양을기술한다. 1.1. 제품의개요 OPENBRAIN M5G 블루투스음성통신모듈은블루투스기능이없는 IT 기기에블루투스오디오기능을손쉽게부가할수있도록설계된소형블루투스모듈이다. 스피커 / 마이크나유선이어셋을통하여음성을입출력하던 IT 기기에본모듈을적용함으로써약 10m 이내의거리에서고품질음성신호를무선으로송수신가능하게하여블루투스헤드셋을사용할수있도록해준다. 본제품에는기존의오디오연결을무선으로대체하는데필요한모든기능이내장되어있고, 시리얼 (UART) 통신을통해모듈의모든기능을외부에서제어하고상태를감시할수있도록설계되어블루투스에대한전문적인지식이없이도제품에블루투스기능을단기간내에적용할수있다. 또, 본모듈은초소형, 초경량, 초저전력으로설계되어기존제품에전기적으로나기구적으로부담을최소화시켰으며, 생산과정에서별도의 RF 튜닝이필요없도록튜닝이완료되어공급되므로생산공정이단순하고추가적인블루투스계측장비나설비가필요없는장점이있다. 1.2. 제품의특징 기존의음성통신제품의회로나소프트웨어변경이거의없이그대로무선화가능 초소형안테나를내장하여별도의안테나부착이불필요 UART 통신을통하여모든기능의제어및상태의모니터링이가능 사용자의특별한요구사항반영가능 1.3. 제품의사양 블루투스 V2.0, 1.2, 1.1 호환 주파수대 : 2,400 ~ 2,483 MHz 내장프로토콜 : L2CAP, RFCOMM, SDP 내장프로파일 : Handsfree AG 4
출력전력 : 0dBm (Power Class 2) 수신감도 : -80dBm 이하 최대데이터전송속도 : 702kbps 안테나이득 : 0dBi Max. 음성신호인테페이스 : Analog Single Ended or Differential 호스트인터페이스 : UART (1.8V Level, 115,200bps). 동작전압 : 2.2 ~ 4.2V 동작온도범위 : -25 ~ +85 크기 : 22.0mm X 36.0mm X 8.4mm 1.4. 응용범위 휴대폰, 화상전화기, VoIP 전화기 기타음성통신단말기 1.5. 외관및핀 (Pad) 사양 Mechanical Layout Top View 22.0 ± 0.3 (unit : mm) Antenna Bluetooth Chip 36.0 ± 0.3 Connector 1.4 1.2 2.0 4.0 2 4 6.. 18 1 3 5.. 17 1. VDD 2. RESETB 3. GND 4. GND 5. UART_TX 6. UART_RX 7. PCM_OUT 8. PCM_SYNC 9. PCM_IN 10. PCM_CLK 11. MIC+ 12. MIC- 13. SPK+ 14. SPK- 15. SPI_MISO 16. SPI_CSB 17. SPI_MOSI 18. SPI_CLK * 상세기구사양은 3.4 참조 5
Pin Description Pin No Name Description 1 VDD Positive supply (3.0V~4.2V) 2 RESETB Reset if low. Input debounced so must be low for > 5ms to cause a reset 3 GND Ground 4 GND Ground 5 UART_TX UART data output 6 UART_RX UART data input 7 PCM_OUT PCM Synchronous data out 8 PCM_SYNC PCM Synchronous data sync 9 PCM_IN PCM Synchronous data in 10 PCM_CLK PCM Synchronous data clock 11 MIC+ Microphone differential, Input P 12 MIC- Microphone differential, Input N 13 SPK+ Speaker differential output P or single ended output 14 SPK- Speaker differential output N or single ended output 15 SPI_MISO Serial Peripheral interface data output 16 SPI_CSB Chip select for synchronous serial peripheral interface 17 SPI_MOSI Serial Peripheral interface data input 18 SPI_CLK Serial Peripheral interface clock 6
2. 사용방법 2.1. 하드웨어설계방법 M5G 블루투스음성통신모듈을기존통신제품에적용하려면, 아래의그림과같이 Host Processor와 RESETB 및 UART 송수신포트를연결하고, Audio Codec의아날로그오디오입출력포트에 SP+, SP- 및 MIC+, MIC-를 Differential Mode로연결한다. 만일오디오입출력을 Single Ended Mode로연결하고자할때에는두단자중하나만사용하거나전용오디오 Amp를사용하여모드를바꾸어준다. 그러나 Differential Mode로사용해야전원선의잡음으로부터신호가강해져 S/N비가향상되는효과가있으므로가급적 Differential Mode로사용하는것이좋으며, 불가피하게 Single Ended Mode로연결할경우에는전용 Amp를사용할것을권장한다. M5G Bluetooth Audio Module VDD RESETB UART +3.3V 1 2 5,6 Host Processor SP MIC GND 13,14 11,12 3,4 Audio Codec & Amplifier 2.2. 동작절차 M5G 블루투스음성통신모듈의동작모드는아래와같은것들이있다. 세부적인동작및 UART 통신프로토콜에대해서는별도의문서에서정의한다. Pairing Mode : 주변블루투스기기를검색하여핸즈프리헤드셋을찾아그내역을보여주고, 사용자가지정한기기와결합하는모드이다. Paging Mode : Pairing 된기기와연결을시도하는모드이다. 복수의기기가 Paring되어기억되어있을경우가장최근에연결되었던기기부터순서대로 Paging을시도한다. Connected Mode : Paging에성공하여연결되어블루투스 Link가연결되어있는 Mode이다. Incoming Call : 전화가와서 Ring이울리는상태이다. Outgoing Call : 사용자가전화를걸고있는상태이다. Talk Mode : 통화를하고있는상태이다. 7
3. 제품의사양 3.1. 전기적사양 Absolute Maximum Ratings Symbol Parameter Min Max Unit VDD 전원입력전압 (Pin 1) -0.4 +5.6 V V+, V- 포트입력전압 VSS-0.4 VDD+0.4 V PinRF RF 입력전력 0 dbm Ts 보관온도 -35 +120 * 본제품에위에정의된정격이상의입력전압이나신호가가해질경우제품에손상이갈수 있으므로주의하여야한다. Recommended Operating Conditions Symbol Parameter Min Typ Max Unit VDD 전원입력전압 (Pin 1) 2.2 3.3 4.2 V To 동작온도 -25 +25 +85 RF Characteristics Symbol Parameter Condition Min Typ Max Unit PoutRF Transmit Output Power 0 +2 +4 dbm MODF1avg Modulation Characteristics Data = 00001111 140 164 175 khz MOFF2max Data = 10101010 115 150 khz F2avg/F1avg 0.8 0.97 20dB BW 940 1000 khz RXsense Receive Sensitivity BER < 0.001-83 -79 dbm PinRF Maximum Input Level -20-10 dbm IMP Inter-Modulation Performance F1 = +3MHz -39-15 dbm F2 = +6MHz PinRF = -64dBm OOB Out Of Band Blocking Performance PinRF = -10dBm 30MHz ~ 2GHz -10 0 dbm 3GHz ~ 12.75GHz PinRF = -27dBm 2000MHz ~ 2399MHz 2498MHz ~ 3000MHz -27-15 dbm * 측정온도 : +25, 측정전압 : 3.3V 8
Audio Characteristics Symbol Parameter Min Typ Max Unit Vain_max Input Full Scale at Maximum Gain 3 mvrms Vain_min Input Full Scale at Minimum Gain 350 mvrms BWain Bandwidth of Microphone Amplifier 20 khz IMPmic Mic Mode Input Impedance 20 kohm IMPin Input Mode Input Impedance 130 ohm Vsp_out Output Voltage Full Scale Swing(Differential) 2.0 Vp-p Isp_out Output Current Drive (at Full Scale Swing) 10 20 40 ma BWaout Output -3dB Bandwidth 18.5 khz Lres Allowed Load: Resistive 8 Open ohm Lcap Allowed Load: Capacitive 500 pf 3.2. 소비전류 Operating Mode Connection Type UART Rate(kbps) Average Unit Page Scan - 115.2 0.49 ma Inquiry and Page Scan - 115.2 0.83 ma ACL 1.28s sniff Master 38.4 0.37 ma SCO HV1 Master/Slave 38.4 41 ma SCO HV3 Master/Slave 38.4 21~26 ma Standby Host Connection - 38.4 76 ua Reset(RESETB low) - - 58 ua * 측정온도 : +25, 측정지점 : 1.8V VDD 입력단 9
3.3. 안테나방사특성 안테나방사좌표계 X Z φ θ Y Y Radiation gain(e-field, dbi) Freq XY XZ YZ Total Gain (GHz) Peak Average Peak Average Peak Average Peak Average 2.400-0.96-4.01-1.11-4.54-6.31-10.45-0.96-5.67 2.450-1.71-4.67-1.53-5.12-7.27-11.21-1.53-5.23 2.500-1.12-4.28-1.18-4.55-7.64-11.72-1.12-5.62 10
Radiation Pattern - Azimuth XY (E-Field, 단품상태 ) 11
Radiation Pattern - Azimuth XY (E-Field, 제품에장착한상태 ) 12
3.4. 기구적사양 Mechanical Dimension (unit : mm) 22.0 ± 0.3 7.5 Antenna Bluetooth Chip 36.0 ± 0.3 Connector 2.0 3.0 2 4 6.. 18 1 3 5.. 17 1.4 1.2 2.0 4.0 3.0 2.0 1. VDD 2. RESETB 3. GND 4. GND 5. UART_TX 6. UART_RX 7. PCM_OUT 8. PCM_SYNC 9. PCM_IN 10. PCM_CLK 11. MIC+ 12. MIC- 13. SPK+ 14. SPK- 15. SPI_MISO 16. SPI_CSB 17. SPI_MOSI 18. SPI_CLK 13
4. 취급시주의사항 4.1. 일반적인주의사항 M5G 블루투스음성통신모듈을다루는데주의해야할사항은다음과같다. 모듈을다룰때에는정전기에파손되지않도록정전기방지수단을갖춘다. 전원입력단에충분한전류가공급되도록충분히큰전류공급원을사용한다. 정격이상의전원전압이나 RF 신호가입력되지않도록주의한다. 4.2. RF 성능의극대화 M5G 블루투스음성통신모듈을장착한제품의 RF 성능을극대화하기위해서는다음의사항에 주의하여 PCB 를디자인하여야한다. Main PCB 상에접지면적을충분히확보하여야안정된 RF 성능을기대할수있다. 안테나가까이에물체 ( 도체, 또는부도체 ) 가있으면안테나방사를방해하고패턴을왜곡시키므로좋지않다. 도체의경우최소한안테나에서 10mm 이상이격시키고, 플라스틱기구물과같은부도체의경우에도 5mm 이상이격시켜야좋다. Main PCB의접지면이아래의그림처럼모듈의접지면과안테나경계선이상안테나쪽으로침범하지않도록 Main PCB를설계하여야한다. Main PCB 상에모듈을위치시키는방법 PCB 상의접지제거 Main PCB 의경계면 Main PCB 의접지면 PCB 상의접지제거 14
5. 신뢰성시험결과 5.1. 동작및보관온도시험결과 M5G 블루투스음성통신모듈을항온항습기챔버에서 -35 ~ +120 의온도로각 2 시간방 치후작동여부확인. 동작온도 정상작동여부 보관온도 정상작동여부 +85 정상작동 +120 정상작동 +20 정상작동 정상작동 -25 정상작동 -35 정상작동 5.2. Time Vs Temperature for Operating & Storage Relative Graph 15
5.3. Radio Characteristics for Each Check Point 항온항습기챔버에서 -25 2 시간방치후측청결과및 Bluetooth Spec. 통과여부 RF Operating Check 1(-25 ) Result (dbm) Spec.(dBm) Output Power +2.65-6 to +4 Sensitivity at 0.1% BER for all packet types -86-70 Modulation Channel df1_avg df2_avg df2/df1 Characteristics (%) Spec. 0 164.6 158.7 96.42 140<df1_avg, df2_avg 39 164.5 155.7 94.65 <175 78 164.7 156.1 94.78 0.80<df2/df1(%) Initial Carrier Frequency Tolerance (ICFT) Df0_max 0.2 Df0_min -0.1 Bluetooth Spec. ±75 Verdict Carrier Channel f_drift_max Drift_rate_max Frequency Drift(CFD) 0 10.1 (khz/50us) 4.7 Spec. Drift Rate Max 39 9.4-5.3 20 78 7.4 6.1 f drift max 40 TX Output Spectrum -20dB Bandwidth f_h-f_l Bluetooth Spec.(MHz) Verdict 0.914 f_h - f_l <= 1.000MHz 16
항온항습기챔버에서 85 2 시간방치후측청결과및 Bluetooth Spec. 통과여부 RF Operating Check 2 (85 ) Result (dbm) Spec.(dBm) Output Power +3.8-6 to +4 Sensitivity at 0.1% BER for all packet types -82.5-70 Modulation Channel df1_avg df2_avg df2/df1 Characteristics (%) Spec. 0 163.8 156.5 95.54 140<df1_avg, df2_avg 39 164.9 157.6 96.16 <175 78 164.9 156.5 95.49 0.80<df2/df1(%) Initial Carrier Frequency Tolerance (ICFT) Df0_max 29.8 Df0_min 29.3 Bluetooth Spec. ±75 Verdict Carrier Channel f_drift_max Drift_rate_max Frequency Drift(CFD) 0-13.6 (khz/50us) 6.4 Spec. Drift Rate Max 39-10.2-5.7 20 78-15.9-8.1 f drift max 40 TX Output Spectrum -20dB Bandwidth f_h-f_l Bluetooth Spec.(MHz) Verdict 0.914 f_h - f_l <= 1.000MHz 17
항온항습기챔버에서 20 2 시간방치후측청결과및 Bluetooth Spec. 통과여부 RF Operating Check 3 (20 ) Result (dbm) Spec.(dBm) Output Power +2.54-6 to +4 Sensitivity at 0.1% BER for all packet types -84.5-70 Modulation Channel df1_avg df2_avg df2/df1 Characteristics (%) Spec. 0 164.3 160.1 97.44 140<df1_avg, df2_avg 39 164.6 159.9 97.14 <175 78 164.7 159.4 96.78 0.80<df2/df1(%) Initial Carrier Frequency Tolerance (ICFT) Df0_max 13.3 Df0_min 11.5 Bluetooth Spec. ±75 Verdict Carrier Channel f_drift_max Drift_rate_max Frequency Drift(CFD) 0 8.4 (khz/50us) -5.4 Spec. Drift Rate Max 39 6.9-6.4 20 78 7.0 6.5 f drift max 40 TX Output Spectrum -20dB Bandwidth f_h-f_l Bluetooth Spec.(MHz) Verdict 0.914 f_h - f_l <= 1.000MHz 18
항온항습기챔버에서 -35, 120 (Storage Graph) 각 2 시간방치후측청결과및 Bluetooth Spec. 통과여부 RF Storaged Check 1 (-35 ~ +120 ) Result (dbm) Bluetooth Spec.(dBm) Verdict Output Power 0.1-6 to +4 Sensitivity at 0.1% BER for all packet types -81-70 Modulation Channel df1_avg df2_avg df2/df1 Characteristics (%) Spec. 0 164.6 160.3 97.45 140<df1_avg, df2_avg 39 164.6 160.2 97.33 <175 78 164.5 159.3 96.84 0.80<df2/df1(%) Initial Carrier Frequency Tolerance (ICFT) Df0_max 13.2 Df0_min 11.9 Bluetooth Spec. ±75 Verdict Carrier Channel f_drift_max Drift_rate_max Frequency Drift(CFD) 0 8.3 (khz/50us) 7.1 Spec. Drift Rate Max 39 8.4 7.2 20 78 6.4 7.2 f drift max 40 TX Output Spectrum -20dB Bandwidth f_h-f_l Bluetooth Spec.(MHz) Verdict 0.922 f_h - f_l <= 1.000MHz 19
6. 포장사양 Packaging (unit : mm) 312 247 15 백색 Soft Tray 에개별포장 (Tray 당 50 개 ) 20
7. 제품설정 ( 고객주문사항 ) Configuration of Bluetooth Parameters - Factory Setting No Parameter Value 1 Local Device Name Model Name (ASCII) 2 Bluetooth Device Address 00150EE20000 ~ 00150EF00000 (HEX) 3 UART Baud Rate 115,200 bps 4 UART Parity None 5 UART Stop Bit 1 6 UART Flow Control None 7 Class Of Device Audio/Phone/Audio_Gateway (0x20 0x02 0x10) 8 Security Mode Level 1 (depends on remote device security level) 9 Operating Mode Active and Sniff Mode Support. 10 Page Scan Mode Discoverable & Connectable 11 Inquiry Mode Non-discoverable & Non-connectable 21