更新时间:2024-11-28 05:47:08下载pdf
BJ95-M 是由涂鸦智能开发的一款低功耗嵌入式蓝牙音频模组。它主要由一颗高集成度的蓝牙芯片 AC6956C8 和少量外围电路构成,内置32位高性能浮点 DSP,最高频率240MHz,具有1MB系统闪存,支持高性能低功耗的蓝牙及音频应用。
BJ95-M蓝牙模组,基于杰理科技的蓝牙智能固件和协议栈的支持,它支持蓝牙 V5.1(向下兼容)协议,同时用户可以基于芯片内置的 32 位高性能 DSP 开发各种应用程序。BJ95-M模组将音频CODEC、PMU(锂电池充电器LDO)、flash、IIC、UART、GPIO、ADC、PWM 集成在一块芯片中,为客户提供有竞争力的功耗以及稳定的蓝牙连接。
BJ95-M包含32 DSP,最高频率240MHz;支持蓝牙V5.1,内置 1MB FLASH,18个可复用的 IO 口,内置 16 位音频编解码器(CODEC),采样率最高支持48KHz。
更新日期 | 更新内容 | 更新后版本 |
---|---|---|
2022-02-28 | 新建文档 | V1.0.0 |
BJ95-M 尺寸大小:19 ± 0.35mm (L) × 15.5 ± 0.35mm (W) × 2.5 ± 0.15mm (H),其中 PCB 厚度0.8 ± 0.1 mm,封装如图所示:
接口引脚定义如下表所示:
序号 | 符号 | IO类型 | 功能 |
---|---|---|---|
1 | GND | P | 电源参考地 |
2 | SDO | I/O | 普通 IO口,可做SPI接口的SPOUT,对应IC的pin6 |
3 | SDI | I/O | 普通 IO口,可做SPI接口的SPDIN,对应IC的pin7 |
4 | SCK | I/O | 普通 IO口,可做SPI接口的SPCLK,对应IC的pin8 |
5 | CS | I/O | 普通 IO口,可做SPI接口的SPCSN,对应IC的pin22 |
6 | CMD | I/O | 普通 IO口,可做SD卡接口的CMD,对应IC的pin20 |
7 | CLK | I/O | 普通 IO口,可做SD卡接口的时钟信号SDCLK,对应IC的pin19 |
8 | DAT | I/O | 普通 IO口,可做SD卡接口的数据位SDDATA,对应IC的pin21 |
9 | TX2 | I/O | 串口发送引脚 UART2_TX,可复用为普通IO,对应IC的pin26 |
10 | RX2 | I/O | 串口接收引脚 UART2_RX,可复用为普通IO,对应IC的pin25 |
11 | PMW0 | I/O | 普通 IO口,可做LED 的驱动 PWM 输出,对应IC的 pin12 |
12 | PMW1 | I/O | 普通 IO口,可做LED 的驱动 PWM 输出,对应IC的 pin13 |
13 | PMW2 | I/O | 普通 IO口,可做LED 的驱动 PWM 输出,对应IC的 pin15 |
14 | PMW3 | I/O | 普通 IO口,可做LED 的驱动 PWM 输出,对应IC的 pin28 |
15 | SPD | I/O | 普通 IO口,可做数字音频的SPDIF_OUT,对应IC的 pin5 |
16 | VCHG | P | Charger,充电输入引脚,对应的IC的pin9,可给外接电池充电 |
17 | GND | P | 电源参考地 |
18 | 3V3 | P | 模组电源输入引脚VCC(典型值3.3 V) |
19 | RX1 | I/O | USBDM,可复用为串口UART1_RX或者普通IO,对应IC的pin23 |
20 | TX1 | I/O | USBDP,可复用为串口UART1_TX或者普通IO,对应IC的pin24 |
21 | RST | I/O | 硬件复位引脚,对应IC的pin14 |
22 | ADC | I/O | ADC端口,10bits ADC,可复用为普通IO,对应IC的pin27 |
23 | MICB | AO | MIC_BIAS,麦克风电源输出,对应IC的pin29,外接MIC要需串联2.2k的电阻 |
24 | MIC | AI | MIC_IN,麦克风输入,对应IC的pin30,外接MIC建议预留对地的滤波电容 |
25 | DAR | AO | DACR,,音频右声道,可驱动16ohm和32ohm负载,对应IC的pin3 |
26 | COM | / | 悬空 |
27 | DAL | AO | DACL,音频左声道,可驱动16ohm和32ohm负载,对应IC的pin2 |
28 | GND | P | 电源参考地 |
说明:
- P 表示电源引脚,I/O 表示数字输入输出引脚,AI/AO表示模拟输入输出引脚。
- 如对 PWM 输出控制的灯色有自己的需求,请与我司商务联系。
- Charger的外围参考电路如下:
- MIC和Speaker的外围参考电路如下:
参数 | 描述 | 最小值 | 最大值 | 单位 |
---|---|---|---|---|
Ts | 存储温度 | -40 | 120 | ℃ |
I/O 电压 | IO口电压 | -0.3 | 3.6 | V |
VCC | 供电电压 | 3 | 5.5 | V |
静电释放电压(人体模型) | TAMB -25℃ | - | 2 | kV |
静电释放电压(机器模型) | TAMB -25℃ | - | 2 | kV |
参数 | 描述 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|---|
Ta | 工作温度 | -20 | - | 70 | ℃ |
VCC | 工作电压 | 3 | 3.3 | 5 | V |
VCHG | 充电器电压 | 4.75 | 5 | 5.25 | V |
VIL | IO 低电平输入 | -0.3 | - | 0.3* VDDIO | V |
VIH | IO 高电平输入 | 0.7*VDDIO | - | VDDIO+0.3 | V |
VOL | IO 低电平输出 | - | - | 0.33 | V |
VOH | IO 高电平输出 | 2.7 | - | - | V |
说明:
- 上述的高低电平输入输出的测试条件为:VDDIO = 3.3V
符号 | 条件 | 最大值(典型值) | 单位 |
---|---|---|---|
Itx | 连续发送,3dBm输出功率 | 18.14 | mA |
Irx | 连续接收 | 21.23 | mA |
IDC | Mesh 联网工作状态下 Average 值 | 5.38 | mA |
IDC | Mesh 联网工作状态下 Peak 值 | 47.85 | mA |
sleep | 深度休眠模式 下 Average 值 | 3 | uA |
参数项 | 详细说明 |
---|---|
工作频率 | 2.4 GHz ISM band |
无线标准 | V5.1+BR+EDR+BLE |
数据传输速率 | 1M、2M |
天线类型 | 板载 PCB 天线 |
参数项 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|
RF平均输出功率 | -28 | 2 | - | dBm |
20dB调制信号带宽(1M) | - | 2500 | - | KHz |
参数项 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|
RX灵敏度 1Mbps | - | -90 | - | dBm |
频率偏移误差 1Mbps | -250 | - | +300 | KHz |
参数 | 条件 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|---|
转换精度 | - | - | - | 16 | Bits |
信噪比 SNR | - | 95 | dB | ||
串扰 | - | - | -90 | - | dB |
输出电压 | - | - | 1 | - | Vrms |
动态范围 | - | - | 90 | - | dB |
输出功率 | 32ohm loading | 11 | - | mW |
说明:
测试条件:
Fin=1kHz
B/W=20Hz—20KHz
A-Weighted THD_N<0.01%
参数 | 条件 | 最小值 | 典型值 | 最大值 | 单位 |
---|---|---|---|---|---|
转换精度 | - | - | - | 16 | Bits |
采样率(Fs) | - | 8 | - | 48 | KHz |
信噪比 SNR | - | - | 90 | 91 | dB |
动态范围 | - | - | 80 | - | dB |
串扰 | - | - | -80 | - | dB |
说明:
测试条件:
Fin=1kHz /-60dB
BJ95-M 使用的是板载 PCB 天线,天线增益3dBi。
为确保 RF 性能的最优化,建议模组天线部分和其他金属件的距离至少保持15mm 以上。如果使用环境的天线周边包裹金属材料等,会极大地衰减无线信号,进而恶化射频性能。成品设计时,注意给天线区域预留出足够的空间,如下图示例所示:
BJ95-M 原理图引脚对应图:
PCB推荐封装:
默认的模组外形尺寸公差为 ±0.35 mm,关键尺寸公差 ±0.1 mm。关键尺寸如果客户有明确要求,请沟通后在规格书中进行明确的标定。
防潮袋必须储存在温度<40℃、湿度<90%RH的环境中
干燥包装的产品,保质期为从包装密封之日起12个月的时间
密封包装内装有湿度指示卡:
请根据回流焊曲线图进行SMT贴片,峰值温度245℃,回流焊温度曲线如下图所示:
A:温度轴
B:时间轴
C:合金液相线温度:217-220℃
D:升温斜率:1-3℃/S
E:恒温时间:60-120S;恒温温度:150-200℃
F:液相线以上时间:50-70S
G:峰值温度:235-245℃
H:降温斜率:1-4℃/S
注意:以上推荐曲线以SAC305合金焊膏为例。其他合金焊膏请按焊膏规格书推荐炉温曲线设置。
产品型号 | MOQ(pcs) | 出货包装方式 | 出货包装方式 | 每箱包装卷盘数(盘) |
---|---|---|---|---|
BJ95-M | 4400 | 载带卷盘 | 1100 | 4 |
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This equipment should be installed and operated with a minimum distance 20cm between the radiator and your body.
Important Note
This radio module must not be installed to co-locate and operating simultaneously with other radios in the host system except in accordance with FCC multi-transmitter product procedures. Additional testing and equipment authorization may be required to operate simultaneously with other radio.
The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end-user.
The host product manufacturer is responsible for compliance with any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.
The end-user manual shall include all required regulatory information/warnings as shown in this manual, including this product must be installed and operated with a minimum distance of 20 cm between the radiator and user body.
The RF module is considered as a limited modular transmitter according to FCC rules. Even though the RF module gets an FCC ID, the host product manufacturer can not use the FCC ID on the final product directly. In these circumstances, the host product manufacturer integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining the FCC authorization by a Class II permissive change application or a new application.
Declaration of Conformity European notice
Hereby, Hangzhou Tuya Information Technology Co., Ltd declares that this module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU,2011/65/EU.A copy of the Declaration of conformity can be found at https://www.tuya.com
This product must not be disposed of as normal household waste, in accordance with the EU directive for waste electrical and electronic equipment (WEEE- 2012/19/EU). Instead,it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point.
The device could be used with a separation distance of 20cm to the human body.
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