NXH3670UK是用于音頻流的低等待超低功耗2.4 GHz BLE收發器,高度集成了2.4GHz無線收發器和嵌入MCU,目標用在可聽無線手持設備和耳機的無線音頻流.NXH3670UK集成了以下的主要功能:2.4GHz收發器和支持速率高達2Mbps的數字調制解調器,支持速率1Mbps和2Mbps的BLE GFSK調制,低功耗16 MHz/32 MHz晶體振蕩器和片上振蕩器,支持低層協議層的RF MAC,ARM Cortex-M0子系統用來系統控制和更高的協議層, AES-128安全協處理器,音頻接口和音頻處理加速度,用于音頻處理的CoolFlux DSP,有多個用戶接口用來控制,數據,調試和測試.收發器的載頻為2.36 GHz到 2.5 GHz, BLE 1 Mbps和2 Mbps PHY模式,可編TX輸出功率從-10dBm到4dBm,每步2dB,BLE 2Mbps調制模式的接收靈敏度為-90dBm,BLE 1Mbps調制模式的接收靈敏度為-94dBm,頻率失調修正高達±300 kHz, RSSI測量具有±3 dB精度,ARM Cortex-M0低功耗模式工作頻率高達16 MHz ,高性能模式為84MHz,工作溫度-20℃到+85℃.本文介紹了NXH3670主要特性和優勢,框圖, 手持設備應用框圖,加密狗應用框圖和評估板NXH3670ADK主要特性,框圖,電路圖,材料清單和PCB設計圖.

The NXH3670UK constitutes a highly integrated, single chip ultra-low power 2.4 GHzwireless transceiver with embedded MCU, targeted at wireless audio streaming forhearables, wireless headsets and headphones.

The NXH3670UK chip integrates the following key functionalities – among others:
?A 2.4 GHz RF transceiver and digital modem supporting up to 2 Mbits/s
?Supporting BLE GFSK modulation 1 Mbps and 2 Mbps
?A low-power 16 MHz/32 MHz crystal oscillator and on-chip oscillators
?An RF MAC for supporting the lower protocol layers
?A Cortex-M0 subsystem for system control and higher protocol layers
?An AES-128 security coprocessor
?Audio interfaces and audio processing accelerators
?A CoolFlux DSP for audio processing
?Multiple user interfaces for control, data, debug and test

NXH3670主要特性和優勢:

?Transceiver charactersitics
–2.36 GHz to 2.5 GHz carrier frequency
–BLE 1 Mbps and 2 Mbps PHY modes
–2 MHz channels in 1 Mbps and 2 Mbps modes
?Receiver characteristics:
–Sensitivity ?90 dBm in BLE 2 Mbps modulation mode
–Sensitivity ?94 dBm in BLE 1 Mbps modulation mode
–Frequency offset correction up to ±300 kHz.
–RSSI measurement with ±3 dB accuracy
?Transmitter characteristics:
–Programmable TX output power of ?10 dBm to +4 dBm in 2 dB steps
?Synthesizer characteristics:
–Fully integrated PLL, no external loop filter components
?Integrated power management:
–Low voltage supply 1.2 V
–Integrated supply generation for sensitive radio blocks
–Integrated supply generation for digital and memories
–Flexible low-power states
?Clock generation:
–Integrated low-power crystal oscillator
–Support for 16 MHz or 32 MHz crystals with ±60 ppm accuracy and crystal trimming
–On chip oscillators, including ultra low-power oscillator
?Low current consumption:
–Sleep current < 63 μA
–Continuous RX current < 3.7 mA
–Continuous TX current < 7.3 mA (0 dBm output power)
?MCU subsystem:
–ARM Cortex-M0 up to 16 MHz in low-power mode and 84 MHz in high-performance
mode
–Flexible DMA engine
–Serial debug interface
?Control/Data interfaces:
–SPI slave
–UART
–GPIOs
?RF MAC:
–Dedicated RF MAC accelerator
–AES security coprocessor
–Packet processing
–Timers
–CRC, whitening
?Audio interfaces and processing
–I2S interface
–G.722/ADPCM codec accelerator
–CoolFlux DSP up to 16 MHz in low-power mode and 84 MHz in high-performance
mode
–Asynchronous sample rate converter (ASRC)
–Latency control
?Flexible boot mode support
–Host-assisted boot mode
?Certified for Bluetooth specification version 5.0
?WLCSP package < 7.25 mm2 (maximum die size after sawing) with 34 bumps
?Low number of external passive components
?Pb-free and compliant with RoHS Directive 2011/65/EU (RoHS 2)
?Operating temperature -20℃ to +85℃
The main application target is gaming headsets, wireless headsets and headphones.
Thanks to its support for audio, control and data, the NXH3670UK can be used in many
applications where ultra-low power and small size are required.
Additional typical applications are mobile phone accessories and computer peripherals.
The NXH3670UK consistsof the following subsystems:
?RF radio:
–An RF radio transceiver
–Digital RF modem and calibration logic
?Wireless link controller:
–A clock shop for dividing, multiplexing and calibrating clocks
–An ARM Cortex running up to 16 MHz in low-power mode and 84 MHz in highperformancemode:
– ROM for program
– RAM for program and data
– DMA engine
–A flexible RF MAC for the lower protocol layers:
– An RF MAC controller interfacing to the radio
– Packet transmit and receive
– CRC/whitening/assembly/dis-assembly accelerators
– Timers
– An AES security coprocessor
–Audio processing unit:
– Latency control unit
– Dual context G.722/ADPCM codec
– Sample rate converter
– A CoolFlux audio DSP with associated memories and DMA engine
–Interfaces:
– General-purpose IOs
– A debug and test UART
– An SPI slave
– An audio port supporting I2S modes
–Timers
–A watchdog timer
–A random number generator
?Power Management Unit (PMU):
–Voltage regulators
–Power-on reset (POR)
–Brownout detection (BOD)
–Power management and reset controller, sleep timer, persistent register file
?A 16 MHz/32 MHz crystal oscillator and various internal oscillators
?A versatile IO switch matrix

圖1.NXH3670UK框圖

圖2.NXH3670手持設備應用框圖

圖3.NXH3670加密狗應用框圖

評估板NXH3670ADK

This user manual describes the ADK board aspects of the NXH3670ADK (application development kit) which consists of a dongle and headset board. The NXH3670ADK is an example of how an NXH3670 application can be made and is a reference in terms of performance.

The NxH3670 SDK board is intended to be used for:
?Demos
?Software development
?Measurements (power consumption and RF)
?Prototyping

圖4. 評估板NXH3670ADK框圖

圖5. 評估板NXH3670ADK元件配置圖

圖6. 加密狗配置的評估板NXH3670ADK框圖

圖7.評估板NXH3670ADK加密狗配置圖

圖8.評估板NXH3670ADK手持設備配置圖

圖9.手持設備應用的評估板NXH3670ADK配置圖

圖10.評估板NXH3670ADK電源LED圖

圖11.ADK3670加密狗框圖

圖12.ADK3670加密狗外形圖

圖13.ADK3670手持設備框圖

圖14.ADK3670手持設備PCB外形圖

圖15.ADK3670手持設備PCB背面圖

圖16. 評估板NXH3670ADK電路圖(1)

圖17. 評估板NXH3670ADK電路圖(2)

圖18. 評估板NXH3670ADK電路圖(3)

圖19. 評估板NXH3670ADK電路圖(4)

圖20. 評估板NXH3670ADK電路圖(5)

圖21. 評估板NXH3670ADK電路圖(6)

圖22. 評估板NXH3670ADK電路圖(7)

圖23. 評估板NXH3670ADK電路圖(8)

圖24. 評估板NXH3670ADK電路圖(9)

圖25. 評估板NXH3670ADK電路圖(10)

圖26. 評估板NXH3670ADK電路圖(11)

圖27. 評估板NXH3670ADK PCB設計圖(1)

圖28. 評估板NXH3670ADK PCB設計圖(2)
評估板NXH3670ADK材料清單見:
NxH3670_0018_GEN_SDK_EBOM_RevC.xls
詳情請見:
https://www.nxp.com/docs/en/data-sheet/NXH3670UK.pdf
和https://www.nxp.com/docs/en/nxp/user-guides/NxH3670_UM11161_UM_ADK_Board.pdf
以及https://www.nxp.com/docs/en/nxp/user-guides/NxH3670_UM11150_UM_SDK_Board.pdf
NXH3670UK.pdf
NxH3670_UM11161_UM_ADK_Board.pdf
NxH3670_UM11150_UM_SDK_Board.pdf
NxH3670_SDK_Board_Public.zip