Technical Description The Equipment Under Test (EUT) is a Azzaro Wanted By Night Headphones 2021 with Bluetooth audio playback feature, which occupies a frequency range of 2402MHz to 2480MHz. The EUT supports Bluetooth 3.0 and BLE. The EUT is powered by 3.7V internal rechargeable battery (3.7VDC) 2.4GHz Bluetooth:
Modulation Type: GFSK Antenna Type: Integral, Internal (PCB Trace) Antenna gain is 0dBi Frequency Range: 2402MHz - 2480MHz Conducted RF Power range is -4dBm to 4dBm The main components are described below:
1. U1 AC6956A is the 2.4GHz Bluetooth RF radio core 2. Y1 24MHz crystal is operating clock for U1 AC6956A Datasheet Zhuhai Jieli Technology Co.,LTD Version1.1 Date2019.12.27 Copyright Zhuhai Jieli Technology Co.,LTD. All rights reserved. Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. 1 AC6956A Datasheet AC6956A Features CPU 32-bit DSP supports hardware Float Point Unit(FPU) Up to 240MHz programmable processor 64Vectored interrupts 4 Levels interrupt priority DSP Audio Processing SBC, AAC Audio decodes supported for BT audio power requirement Support GFSK and /4 DQPSK all paket types Provides +6dbm transmitting power Fast AGC for enhanced dynamic range Supports receiver with -90dBm sensitivity a2dp\avctp\avdtp\avrcp\hfp\spp\smp\att\gap\g att\rfcomm\sdp\l2cap profile Peripherals mSBC voice codecs supported for BT phone Supports MP2, MP3, WMA, APE, FLAC, AAC, MP4, M4A, WAV, AIF, AIFC audio decoding One full speed USB 2.0 OTG controller Four multi-function 16-bit timers, support capture and PWM mode Three 16-bit PWM generator for motor Packet Loss Concealment (PLC) for voice driving Acoustic echo cancellation/suppression UART1 supports DMA mode Three full-duplex basic UART, UART0 and Two SPI interface supports host and device processing
(AEC,AES) Single/Dual MIC Environmental Noise mode Cancellation (ENC) One hardware IIC interface supports host and Multi-band DRC limiter 30-band EQ configuration for voice Effects device mode Built-in Cap Sense Key controller 9 channels 10-bit ADC for analog sampling External wake up/interrupt on all GPIOs Audio Codec Two channels 16-bit DAC, SNR >= 95dB Three channels 16-bit ADC , SNR >= 90dB Sampling rates of 8KHz/11.025KHz/16KHz/22.05KHz/24KHz/
32KHz/44.1KHz/48KHz are supported One analog MIC amplifier, build-in MIC bias generator Supports two PDM digital MIC inputs three channels Stereo analog MUX Supports cap-less, single-ended, and differential mode at the DAC path PMU Low voltage LDO for internal digital and analog circuit supply 1uA current consumption in the soft-off mode Built-in LDO for the core, I/O, Bluetooth and flash VBAT is 2.2V to 5.5V VDDIO is 2.2V to 3.6V RTCVDD is 2.2V to 3.6V Supports 16ohm and 32ohm Speaker loading Packages QFN32(4mm*4mm) Bluetooth Compliant with Bluetooth Temperature V5.1+BR+EDR+BLE specification Operating temperature: -20 to +70 Meet class1 class2 and class3 transmitting 2 Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. AC6956A Datasheet Storage temperature: -65 to +150 Applications Bluetooth Stereo headset Bluetooth Mono headset Bluetooth TWS headset Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. 1 AC6956A Datasheet 1Pin Definition 1.1 Pin Assignment Figure 1-1 AC6956A_QFN32_4x4 Package Diagram 2 Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. AC6956A Datasheet 1.2 Pin Description Table 1-1 AC6956A_QFN32_4x4 Pin Description PIN NO. Name I/O Type Drive
(mA) Function Other Function DACVSS NC VDDIO P P
Ground IO Power 3.3v PB10 I/O 24/8 GPIO 1 2 3 4 PB9 I/O 24/8 GPIO 5 PB8 I/O 24/8 GPIO 6 PB4 I/O 24/8 GPIO AMUX2RAnalog Channel2 Right;
SPI2DOASPI2 Data Out(A);
ADC9ADC Input Channel 9;
UART2RXCUart2 Data In(C);
PWMCH3LMotor PWM Channel3(L) AMUX2LAnalog Channel2 Left;
SPI2CLKASPI2 Clk(A);
CAP0Timer0 Capture;
UART2TXCUart2 Data Out(C);
PWMCH3HMotor PWM Channel3(H) AMUX1RAnalog Channel1 Right;
SPI2_DIASPI2 Data In(A);
ADC8ADC Input Channel 8;
CLKOUT1Clk Out1;
IIC_SCL_CIIC SCL(C);
ADC7ADC Input Channel 7;
UART0TXBUart0 Data Out(B);
LVDLow Voltage Detect Input;
PWMCH2HMotor PWM Channel2
(H) 7 8 9 10 11 12 VSSIO NC VBAT LDO_IN PB5 BT_AVDD PB2 P P P I/O P I/O
8
8 Ground LDO Power Charge Power 5v GPIO
(High Voltage Resistance) BT Power 1.3v 3 PWM3Timer3 PWM Output;
CAP1Timer1 Capture;
UART0TXCUart0 Data Out(C);
UART0RXCUart0 Data In(C);
GPIO SPI1DIASPI1 Data In(A);
Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI.
(High Voltage Resistance) 13 PB3 I/O 24/8 GPIO 14 PB1 I/O 24/8 GPIO
(pull up) 15 PB0 I/O 8 GPIO
(High Voltage Resistance) 16 17 18 19 BT_RF VSSIO BT_OSCI BT_OSCO
P I O
Ground OSC In OSC Out 20 PC5 I/O 24/8 GPIO 21 PC4 I/O 24/8 GPIO AC6956A Datasheet PWMCH1LMotor PWM Channel1
(L) PWM2Timer2 PWM Output;
ADC6ADC Input Channel 6;
Long Press Reset SPI1DOASPI1 Data Out(A);
ADC5ADC Input Channel 5;
TMR2Timer2 Clock Input;
UART1RXAUart1 Data In(A);
SPI1CLKASPI1 Clock(A);
UART1TXAUart1 Data Out(A);
PWMCH1HMotor PWM Channel1(H) SD1CLKASD1 Clock(A);
SPI1DOBSPI1 Data Out(B);
UART2RXDUart2 Data In(D);
IIC_SDA_BIIC SDA(B);
ADC13ADC Input Channel 13;
PWMCH5LMotor PWM Channel5(L) SD1CMDASD1 Command(A);
SPI1CLKBSPI1 Clock(B);
UART2TXDUart2 Data Out(D);
IIC_SCL_BIIC SCL(B); ADC10ADC Input Channel 10;
PWMCH5HMotor PWM Channel5(H) SD1DAT0ASD1 Data0(A);
SPI1DIBSPI1 Data In(B);
22 PC3 I/O 24/8 GPIO 23 DVDD P Core Power 24 USBDM I/O 25 USBDP I/O I/O
4 4
USB Negative Data
(pull down) USB Positive Data
(pull down) UART1RXDUart1 Data In(D);
IIC_SDA_AIIC SDA(A);
UART1TXDUart1 Data Out(D);
IIC_SCL_AIIC SCL(A);
ADC12ADC Input Channel 12;
26 PC7 GPIO MIC_BIASMicrophone Bias Output 27 PC6 I/O 24/8 GPIO MICMIC Input Channel;
ADC11ADC Input Channel 11;
Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. 4 AC6956A Datasheet 28 29 30 31 32 DACR DACL VCOMO DACVDD NC O O
P
DAC Right Channel DAC Left Channel DAC Reference Output Power supply for audioDAC logic Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. 5 AC6956A Datasheet 2Electrical Characteristics 2.1 Absolute Maximum Ratings Table 2-1 Symbol Parameter Tamb Ambient Temperature Tstg Storage temperature VBAT Supply Voltage LDO_IN Charger Voltage 2.2 PMU Characteristics V3.3IO 3.3V IO Input Voltage
-0.3 VDDIO+0.3 Min
-20
-65 2.2 4.5 Max
+70
+150 5.5 5.5 Unit C C V V V Table 2-2 Symbol Parameter Min Typ Max Unit Test Conditions VBAT Voltage Input LDO_IN Charger Voltage V3.3 Voltage output VBT_AVDD Voltage output VDACVDD DAC Voltage IL3.3 Loading current 2.2 4.5 _ _ _ 3.7 5.0 3.3 1.3 2.7 _ 5.5 5.5 _ _ VBAT = 5V, 100mA loading VBAT=5V, 100mA loading VBAT = 5V, 10mA loading 150 mA VBAT = 5V 2.3 Battery Charge Symbol Parameter Min Typ Max Unit Test Conditions Table 2-3 LDO_IN 4.5 5 5.5 Charge Input Voltage VCharge Charge Voltage 4.15 4.2 4.25 ICharge Charge Current 20 320 mA Charge current at fast charge mode ITrikl Trickle Charge Current 20 45 70 mA VBAT<VTrikl V V V V V V V _ _ Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. 6 AC6956A Datasheet 2.4 IO Input/Output Electrical Logical Characteristics IO input characteristics Symbol Parameter Low-Level Input Voltage High-Level Input Voltage Min
-0.3 0.7*
VDDIO Low-Level Output Voltage High-Level Output Voltage _ 2.7 VIL VIH VOL VOH IO output characteristics _ _ _ _ Table 2-4 Typ Max Unit Test Conditions 0.3* VDDIO VDDIO = 3.3V VDDIO+0.3 VDDIO = 3.3V 0.33 _ VDDIO = 3.3V VDDIO = 3.3V V V V V 2.5 Internal Resistor Characteristics General Output High Drive Table 2-5 Internal Pull-Up Resistor Internal Pull-Down Resistor 8mA 24mA 10K 10K 4mA 4mA _ 10K 10K 1.5K 180K 10K 10K 15K 15K PB0~PB10 Port PC6 PC7 PB5 USBDP USBDM 2.6 DAC Characteristics Comment 1PB1 default pull up 2USBDM & USBDP default pull down 3internal pull-up/pull-down resistance | accuracy 20%
Parameter Frequency Response THD+N S/N Crosstalk Output Swing Dynamic Range Min 20 _ _ _ DAC Output Power 11 Max 20K _ _ _ _ Unit Test Conditions Hz dB dB dB Vrms 1KHz/0dB 10Kohm loading With A-Weighted Filter 1KHz/-60dB dB 10Kohm loading With A-Weighted Filter mW 32ohm loading Table 2-6 Typ _
-75 95
-80 1 90 7 Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. AC6956A Datasheet 2.7 ADC Characteristics Parameter Min Typ Max Unit Test Conditions Table 2-7 Dynamic Range S/N THD+N Crosstalk 91 _ _ dB dB dB dB 1KHz/-60dB 1KHz/-60dB 2.8 BT Characteristics 2.8.1 Transmitter Basic Data Rate Table 2-8 Parameter Min Typ Max Test Conditions RF Transmit Power RF Power Control Range 20dB Bandwidth Adjacent Channel Transmit Power
+2MHz
-2MHz
+3MHz
-3MHz Unit dBm dB KHz dBm dBm dBm dBm 6 25, Power Supply VBAT=5V 2441MHz _ _ _ 80 90
-70
-80 4 20 950
-40
-38
-44
-35 Enhanced Data Rate Table 2-9 Parameter Min Typ Max Unit Test Conditions Relative Power
/4 DQPSK Modulation Accuracy Adjacent Channel Transmit Power
+3MHz DEVM RMS DEVM 99%
DEVM Peak
+2MHz
-2MHz
-3MHz 25, Power Supply dBm VBAT=5V 2441MHz dB
dBm dBm dBm
-1 6 10 15
-40
-38
-44
-35 8 Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. 2.8.2 Receiver Basic Data Rate Table 2-10 Min Typ Max Unit Test Conditions AC6956A Datasheet Parameter Sensitivity Co-channel Interference Rejection Adjacent Channel Interference Rejection
-2MHz Parameter Sensitivity Co-channel Interference Rejection Adjacent Channel Interference Rejection
-2MHz
+1MHz
-1MHz
+2MHz
+3MHz
-3MHz
+1MHz
-1MHz
+2MHz
+3MHz
-3MHz
-90
-13
+5
+2
+37
+36
+40
+35
-90
-13
+5
+2
+37
+36
+40
+35 dBm dB dB dB dB dB dB dB dB dB dB dB dB dB dB dBm 25, Power Supply VBAT=5V 2441MHz 25, Power Supply VBAT=5V 2441MHz Enhanced Data Rate Table 2-11 Min Typ Max Unit Test Conditions Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. 9 AC6956A Datasheet 3 Package Information 3.1 QFN32_4x4 Figure 3-1 AC6956A_QFN32_4x4 Package 10 Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. AC6956A Datasheet 4Revision History Date Revision 2019.12.25 2019.12.27 V1.0 V1.1 Description Initial Release Delete PB7Updata Featrues Confidential The information contained herein is the exclusive property of JIELI and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of JIELI. 11