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Low Energy, Low Cost SoCs

T2M Bluetooth Bluetooth 5.2 Dual Mode Audio SoC - Low cost earbuds

Bluetooth 5.2 Dual Mode Audio SoC - Low cost earbuds

Description and Features

The BT 5.2 Dual Mode Audio SoC combines the features and functions needed for high quality wireless audio into a single SoC. The BT 5.2 Dual Mode Audio SoC supports standards and industrial alliance specifications including Bluetooth 5.2 including BDR/EDR, LE, indoor positioning and BLE Mesh, Zigbee 3.0, HomeKit, 6LoWPAN, Thread and 2.4GHz proprietary standard. The BT 5.2 Dual Mode Audio SoC is designed to offer high integration, ultra-low power application capabilities. The BT 5.2 Dual Mode Audio SoC integrates a powerful 32-bit RISC-V (RISC-Five) MCU, DSP, AI Engine, 2.4GHz ISM Radio, 256kB SRAM, 4MB Flash, stereo Audio Codec, 14bit Aux ADC, Analog and Digital Microphone input, PWM, flexible IO interfaces, and other peripheral blocks required for advanced audio applications. The BT 5.2 Dual Mode Audio SoC also includes multi-stage power management design with sub-threshold level power consumption allowing ultra-low power operation and making it the ideal candidate for wearable and power-constraint applications. With the high integration level of 9518, few external components are needed to satisfy customers’ ultra-low cost requirements. 



Key features:

  • 32-bit RISC-V microcontroller
    • Better power-balanced performance than ARM M4
    • Instruction and Data cache controller
    • Maximum running speed up to 120MHz
  • Memory architecture: up to 4MB Flash, 256kB SRAM including up to 64kB retention SRAM
  • Embedded AI Engine for audio processing
  • RTC and other timers:
    • Clock source of a 24MHz&32.768kHz Crystal and 32kHz/24MHz embedded RC oscillator
    • Three general 32-bit timers with four selectable modes in active mode
    • Watchdog timer
    • A low-frequency 32kHz timer available in low power mode
  • Interfaces:
    • Up to 38 GPIOs
    • 2-wire JTAG interface
    • Flash I/F interface
    • Dual DMIC (Digital Mic), Dual AMIC (Analog Mic), 24bit 192kHz I2S
    • Stereo Audio Codec
    • SPI, I2C, USB 2.0, Swire, UART with hardware flow control and 7816 protocol support
    • Up to 6 channels of differential PWM
    • IR transmitter with DMA
    • One quadrature decoder (QDEC), two-phase input selectable
    • 10-channel (only GPIO input), 14-bit Auxiliary ADC
    • Low power comparator
  • Embedded hardware AES and AES-CCM
  • Embedded Random Number Generator (TRNG)
  • Embedded hardware acceleration for Elliptical curve cryptography (ECC)
  • RF Features:
    • Bluetooth/802.15.4/2.4GHz RF transceiver in worldwide 2.4GHz ISM band
    • Bluetooth Compliant, Bluetooth Low Energy (BLE) 1Mbps and 2Mbps, Long Range 125kbps and 500kbps, BDR (Basic data rate), EDR (Enhanced data rate) 2Mbps and 3Mbps
    • IEEE802.15.4 compliant, 250kbps
    • 2.4GHz proprietary 1Mbps/2Mbps/250kbps/500kbps mode with Adaptive Frequency Hopping feature
    • ANT mode
    • Rx Sensitivity: -97dBm@ Bluetooth Low Energy (BLE) 1Mbps, -94dBm @ Bluetooth Low Energy (BLE) 2Mbps mode, -100dBm @ Long Range 125kbps, -99dBm @ Long Range 500kbps, -92dBm @ BDR (Basic Data Rate) mode, -93.5dBm @EDR (Enhanced Data Rate) 2Mbps mode, -87dBm @ EDR (Enhanced Data Rate) 3Mbps mode, -100dBm@ IEEE802.15.4 250kbps
    • Tx output power: up to +10dBm @ Bluetooth Low Energy (BLE) /BDR (Basic Data Rate) mode, +7dBm @ EDR (Enhanced Data Rate) mode
    • 50 Ω matched single-pin antenna input
    • RSSI monitoring with +/-1dB resolution
    • Auto acknowledgement, retransmission and flow control
    • Support full-function BLE location features
    • Support PTA (Packet Traffic Arbitration) for Wi-Fi co-existence
  • Power Management
    • Power supply -VDD (battery): 1.8V~4.3V, VBUS (USB): 4.5V~5.5V
    • Low power controller by sub-threshold level power consumption Battery monitor for low battery voltage detection
    • Brownout detection/shutoff and Power-On-Reset
    • Multiple-power-state to optimize power consumption
    • Supports USB BC1.2 Battery Charging
  • Low power consumption:
    • Whole Chip, RX EDR (Enhanced Data Rate) mode: 5.23mA @ 4.2V DCDC
    • Whole Chip, TX BR mode: 5.34mA @ 0dBm, 4.2V DCDC
    • Whole Chip, TX EDR mode: 8.01mA @ 2.5dBm, 4.2V DCDC
    • Deep sleep with external wakeup (without SRAM retention): 0.4uA
    • Deep sleep with SRAM retention: < 1uA
    • Sub-threshold level power consumption for best energy efficiency
  • Bluetooth features Include:
    • Bluetooth support with BDR (Basic Data Rate), EDR (Enhanced Data Rate), and BLE (Bluetooth Low Energy)
    • Long range support with 125kbps and 500kbps data rate
    • Bluetooth SIG Mesh support
    • Bluetooth based location and indoor positioning support with AoA and AoD (a.k.a Bluetooth 5.1)
    • Bluetooth ISO channel support (a.k.a Bluetooth 5.2) with broadcast and unicast mode
    • extended profile with audio support for voice command based searches
  • Wireless Audio features
    • High performance Stereo Audio Codec with SNR over 96dB and sampling rate up to 96kHz
    • 24-bit ADC/DAC for Codec
    • Patented WA2+ technology for true wireless stereo and 1+N hearable devices with synchronized playback and balanced power on all devices
    • Support decoder for SBC, AAC, OPUS, LC3
    • Support voice codec such as G.711, A-Law, u-Law, CVSD, mSBC
    • Support HFP 1.7, HSP 1.2, A2DP 1.3, AVRCP 1.6, SPP 1.2, and PBAP 1.0, ANCS, DIS
    • Support Apple iAP2
    • Support EDR (Enhanced Data Rate) +BLE (Bluetooth Low Energy) dual mode operation
    • Support noise suppression and echo cancellation
    • Support Packet Loss Concealment (PLC) for voice processing
  • Operating temperature range: -40℃~+85℃
  • Package Options: Completely RoHS-compliant package
    • 56-pin QFN 7×7mm
    • 48-pin QFN 7×7mm
    • 32-pin QFN 5×5mm


  • Wireless Headsets
  • Wireless Speakers
  • Hearables
  • Consumer Electronics