较新**高性价比，低成本，低功能蓝牙4.0CSR蓝牙方案

深圳市芯智骏科技有限公司
提供蓝牙音响方案、蓝牙模块、蓝牙音响PCBA
欢迎来电咨询采购  : 
一．产品概述
    SMH-BT8635 V1.0蓝牙模块为本公司自主开发的智能型无线音频数据传输产品，是低成本的**的立体声无线传输方案，模块采用了CSR BC8芯片为模块提供了**的音质和兼容性，整体性能更优化。模块采用免驱动方式，客户只需要把模块接入应用产品，就可以快捷地实现音乐的无线传输，享受无线音乐的乐趣。
二．应用领域
该模块主要用于短距离的音乐传输，可以方便地和笔记本电脑，手机，PDA等数码产品的蓝牙设备相连，实现音乐的无线传输。
◆蓝牙音响
◆ 蓝牙立体声耳机
◆ 免提电话
◆ 蓝牙无线传输音频
◆ 蓝牙拔号器
三．基本特性
Bluetooth Profiles
◆Bluetooth v4.0 specification support
◆HFP v1.6
◆HSP v1.2
◆A2DP v1.2
◆AVRCP v1.4
◆Support for smartphone applications (apps)
Music Enhancements
◆Configurable 5-band EQ for music playback (rock,pop, classical, jazz, dance etc)
◆SBC, MP3, AAC and Faststream decoder
◆Stereo widening (S3D)
◆Volume Boost
◆Support for voice recognition
◆Support for multi-language programmable audio prompts
◆CSR's proximity pairing and CSR's proximity connection
◆Multipoint support for HFP connection to 2 handsets for voice
◆Multipoint support for A2DP connection to 2 A2DP sources for music playback
◆Talk-time extension
Improved Audio Quality
CSR’s latest 2-mic CVC audio enhancements for narrowband and wideband connections including::
   ◆1-mic far-end audio enhancements
   ◆Near-end audio enhancements )noise suppressionand AEQ)
   ◆Wind noise reduction
   ◆Packet loss concealment
   ◆Bit error concealment
   ◆Automatic gain control and automatic volumecontrol
   ◆Frequency expansion for improved speech intelligibility
   ◆mSBC codec support for wideband speech
四．性能参数
 
型号
SMH-BT8635 V1.0
蓝牙规格
Bluetooth V4.0
调制方式
∏/4 DQPSK,8DPSK
供电电压
3.3-4.2V
支持蓝牙协议
HFPV 1.6,HSPV 1.2,A2DP V1.2,AVRCP V1.4
工作电流
＜20mA
待机电流
＜50uA
温度范围
-40℃至+80℃
无线传输范围
≥10M
传输功率
支持CLASS1/CLASS2/CLASS3较大可调8dBm
灵敏度：
-80dBm<0.1%BER
频
频率范围：
2.4GHz-2.480GHz
对外接口：
PIO, SPI, I2C and PCM,USB
音频性能
立体声支持AAC, MP3, SBC
音频信噪比：
≥75dB
失真度
≤0.1%
模块尺寸
22*14*1.8
 
 
 
 
 
 
 
 
 
 
 
五．模块封装尺寸
 
      
六．模块PIN脚定义
 
 
 
 
 
 
七．模块PIN脚功能说明
Pin
Symb
I/O
Description
1
PIO21
Bi-directional with strong pull-down
Programmable input /output
2
PIO18
Bi-directional with strong pull-down
Programmable input /output
3
PIO17
Bi-directional with strong pull-down
Programmable input /output
4
PIO9
Bi-directional with strong pull-down
Programmable input /output
5
PIO7
Bi-directional with strong pull-down
Programmable input /output
6
PIO6
Bi-directional with strong pull-down
Programmable input /output
7
PCM
Input with weak
SPI/PCM select input
8
CS
Bi-directional with strong pull-down
Programmable input/put Alternative function:SPI data Output PCMIsynchronous data sync
9
MISO
Bi-directional with strong pull-down
Programmable input/put Alternative function:SPI data Output   PCMIsynchronous data Output
10
MOSI
Bi-directional with strong pull-down
Programmable input/put Alternative function:SPI data Input PCMIsynchronous data Output
11
CLK
Bi-directional with strong pull-down
Programmable input/put Alternative function:SPI clock PCMIsynchronous data clock
12
RST
 
Reset if low,pull low minimum 5ms to case a reset
13
VBAT
Batterypositive terminal
3.3-4.2V
14
GND
Ground
Ground connect battery negative
15
VCHG
Charger input
 
16
CHG_EXT
External Battery charger
Charge
17
VBAT_SENESE
Batterycharger sense input
BAT_SENSE
18
TX
Bi-directional with strong pull-down
Programmable input/output Alternative function:UART data output
19
RX
Bi-directional with strong pull-down
Programmable input/output Alternative function:UART data input
20
USB_N
Bi-directional
USB data plus with selectable internal 1.5k pull up resistor
21
USB_P
Bi-directional
USB data minus
22
POWER_EN
Input with weak pull-down
Regulator enable input
23
1V8
POWER
+1.8V Output
24
LED0
Bi-directional
LED Driver
25
LED1
Bi-directional
LED Driver
26
LED2
Bi-directional
LED Driver
27
LINE/MIC_AN
Analogue in
LINE or Microphone input positive ,channel A
28
LINE/MIC_AP
Analogue in
LINE or Microphone input negative ,channel A
29
MIC_BIAS
Analogue out
Microphone bias
30
LINE_BN
Analogue in
LINE input negative ,channel A
31
LINE_BP
Analogue in
LINE input negative ,channel A
32
SPK_RN
Analogue out
Speaker output negative,right
33
SPK_RP
Analogue out
Speaker output positive,right
34
SPK_LN
Analogue out
Speaker output negative,right
35
SPK_LP
Analogue out
Speaker output positive,right
36
GND2
Ground
Ground connect battery negative
37
RF
Radio-frequency **
RF ** output
38
GND1
Ground
Ground connect battery negative
 
 
八．设计注意事项：（模块兼容8615、8630、8635三个IC，就是分单、双声道）
   
    
1.BC8615-----------是单声道芯片
 这时音频只有PIN34 ,PIN35也就是SPK_LN,SPK_LP 有音频输出，而SPK_RN,SPK_RP是空脚
 
BC8630,8635-------是双声道的芯片，SPK_LN,SPK_LP,SPK_RN,SPK_RP都有音频输出，属于立体声，BC8630不带MIC，带双LINE输入
 
2.IO口注意事项
 PIO21,PIO18,PIO17,PIO9,PIO7,PIO6有这6个IO口可以用来做按键，其它口做输出
 
 
九．电路连接注意
      SMH-BT8635 V1.0外接功放的时候，**接差分输入的功放，如果不接差分输入的功放，**接一个运放平衡两个差分的电平，否则会有：“啪啪”的冲击声。
 
 
十．注意事项
      A．如果模组天线旁边有电池，金属物，液晶屏，喇叭等，要求离天线距离至少15MM
         B．layout时供电线路建议使用星形走线，并确保蓝牙模组供电线性度要好，还有BT的地**与运放，功放，MCU等的地分开，而且BT下侧不可有其它干扰地。
         C．天线周围不可走控制线，电源线，音频线，MIC等干扰线。
         D.如果模组天线附近有排座，外壳有金属铁网等对信号有影响的，建议避开，可选用**的高增益天线