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csr8670 bluetooth modules SBC2015-B specification version 1.0 04-jan.-2014 ? 2014 smartdesign technology co., ltd. all rights reserved. smartdesign confidential - information is subject to change without prior notice.
documentation history revision description date remark v1.0 SBC2015-B preliminary specifica - tion released jan 2014
? 1. description ........................................................................................................................................................... 4 2. features ................................................................................................................................................................ 4 3. block diagram ..................................................................................................................................................... 5 4. radio characteristics .......................................................................................................................................... 5 5. electrical characteristics ..................................................................................................................................... 6 6. software diagram ................................................................................................................................................ 7 7. pin definition ....................................................................................................................................................... 8 8. mechanical specification ................................................................................................................................... 10 9. reference schematics ........................................................................................................................................ 11 10. software specification ...................................................................................................................................... 12 11. reflow information .......................................................................................................................................... 13
1. description SBC2015-B audio transmitter/receiver is power by csr bc8670 technology. that provides a complete 2.4ghz bluetooth technology for stereo music transmission. the SBC2015-B module is compliant with bluetooth specification v3.0 edr ,4.0 le and support a2dp, avrcp, hsp, hfp, and map, spp, pbap under request. it is the 10dbm module with build in antenna. reduce the effort on the rf section when the engineer designs it into the system. smart design also customize the software to meet the requirement from customer. 2. features csr bluecore8670 chip . bluetooth v3.0 edr, bluetooth 4.0 ble compliant . bluetooth 10dbm rf output power. 10~50 meters transmission distance. updated 80 mhz dsp performance. single end audio output uart inteface supported a2dp1.2 , hsp1.2, hfp1.6( hd voice ready) , avrcp 1.4 , pbap1.0 and spp1.0 true wireless stereo (tws) supported. fully configurable with simple at style commands over uart and bluetooth connections. build in high performance chip antenna . pa integrated and output single end audio inerface. dimension: 35 x 25 x 3 mm . castellated smt pads or 12 pin pitch 2.0mm connector easy and reliable pcb mounting. bqe fcc certified.
3. block diagram SBC2015-B module block diagram 4. radio characteristics frequency (ghz) min typ max bt spec unit sensitivity at 0.1%ber 2.402 -93 -85 - <= -70 dbm 2.441 -93 -85 - dbm 2.480 -93 -85 - dbm rf transmit power 2.402 0 3 10 <= 4 dbm 2.441 0 3 10 dbm 2.480 0 3 10 dbm initial carrier frequency tolerance 2.402 - 5 75 75 khz 2.441 - 5 75 khz 2.480 - 5 75 khz 20db bandwidth for modulated carrier - 900 1000 <=1000 khz drift (five slots packet) - 15 - 40 khz drift rate - 13 - 20 khz ? f1 avg maximum modulation 2.402 140 165 175 140 < ?f1 avg khz 2.441 140 165 175 khz 2.480 140 165 175 khz ? f2 max minimum modulation 2.402 115 190 - 115 khz 2.441 115 190 - khz 2.480 115 190 - khz
5. electrical characteristics voltage input min typ. max unit supply voltage 3.5 5 5.3 v power consumption operating conditions voltage range 3.5v ~ 5.3v operating temperature range -30c ~ 80c storage temperature range -30c ~ 85c relative humidity (operating) <=90% relative humidity (storage) <=90%
6. software diagram
7. pin definition pin name type note 1 gpio4 i/o reserved. keep it floating 2 r_spk o right side audio out put 3 l_spk o left side side audio output 4 spk_gnd o ground for speaker 5 mic+ i microphone + 6 mic- i microphone - 7 vcc pwr power input 8 gnd pwr ground 9 tx o uart tx 10 rx i uart rx 11 int o interrupt 12 gpio7 i/o reserved. keep it floating vcc supply voltage at this pin with 5 v. gnd connect gnd pins to the ground plane of the pcb. rx
rx is used to implement uart data transfer from another device to sbc3525. the uart interface requires an external rs232 transceiver chip. ttl level. tx tx is used to implement uart data transfer from sbc3525 to another device. ttl level. l_ spk left channel audio output. the audio output line is the single-ended. use low impedance ground plane dedicated for the audio signals. r_spk right channel audio output. the audio output line is the single-ended. use low impedance ground plane dedicated for the audio signals spk_gnd audio ground. connect to right and left audio line. mic + and mic- a udio inputs. this audio input can be configured to microphone or line input. route differential pairs close to each other and use a solid dedicated audio ground plane for the audio signals. int interrupt output. normally keep in low. change to high when audio output.
8. mechanical specification fig. 1.2 SBC2015-B mechanical specification (unit:mm)
9. reference schematics
10. software specification software function (a) SBC2015-B-sd SBC2015-B-sd is the smart drive sfotware. this software will perform SBC2015-B module itselves. there is no software effort by user to control this module after ponwe on. support pro file stack / profile SBC2015-B-sd bt4.0 module a2dp v hsp v hfp v avrcp v (b) SBC2015-B-at SBC2015-B-at will act only when you send at command. detailed at command, please check the document a2dp_at_commands support pro file stack / profile SBC2015-B-at bt4.0 module a2dp v hsp v hfp v avrcp v map (under request) pbap v spp (under request)
11. reflow information reflow profile graphic, assuming: ? kester r905 sn/4ag/0.5cu solder paste. ? all solder ball alloys melt at 217c. ? component joints do not exceed temperatures as per j-std-02

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