1.1 KEY FEATURES
Ø Bluetooth Radio
o Bluetooth v5.1 DM (Classic and Low Energy) transceiver
Bluetooth classic supports
- 1M basic rate, EDR 2M, EDR 3M
- Sensitivity is more than -94dBm for EDR 2M
Bluetooth low energy supports
- 1Mbps, 2Mbps, 500kbps, 125kbps
- Advertisement Extension
o Transmitting power is up to 9dBm
o Optimization in wireless audio broadcasting and stereo audio streaming
o Trimming audio clock to synchronize wireless audio streaming
o Streaming audio from left channel to right channel without any conversion to keep original quality
o CEVA BT DM 5.0 Baseband
Ø BT profile, stack and features
o Latest profiles are supported, including
- SPP 1.2
- RFCOMM 1.2
- A2DP 1.3
- AVRCP 1.6
- GAVDP 1.3
- AVDTP 1.3
- AVCTP 1.4
- HFP 1.7
- PBAP 1.2
o Proven for years in global market
o Based on the previous generation SoC profile and stack
o WCI-2 and WLAN Coexistence are supported
Ø Processor and DSP
o Dual-core architecture
o Tensilica HiFi 3 DSP
- Easy development by C/C++
- On top of that LX7 processor
- Two 32 x 32 MAC
- Four 24 x 24 MAC
- Circular Buffer
- Fully programable
o Tensilica LX7 processor
- High efficiency and low power 32-bit RISC
- Easily development by C/C++
o Memory
- Embedded instruction and data cache
- 352KB RAM for instruction and data
- 816KB ROM
- Embedded 16Mb SPI NOR flash
Ø CODEC
o SBC CODEC
o Fast Stream CODEC
o mSBC CODEC with packet loss concealment for voice processing
o MP3 CODEC with 384kpbs support
o DAB and DAB+ decoder
o AAC multi-channel decoder
o Support 3rd party CODECs
Ø Pre and post audio or voice processing
o Multi-band EQ
o Multi-band DRC
o High quality SRC
o Pitch and speed control
o FFT for spectrum analysis
o Microphone arrays and beamforming
o Microphone noise reduction
o Acoustics echo cancellation
o Support 3rd party algorithms
Ø Audio CODEC
o HD audio (20Hz-40kHz)
o Stereo 24bit ADC with 95dB SNR
o Differential input for ECM mic
o Sampling rates of 8kHz to 96kHz
Ø Active noise cancellation (ANC)
o Hardware Feedforward ANC
Ø ELL®, Extreme Low Latency Streaming and broadcasting
o Latency of audio transmission is less than 20ms in one direction or bi direction.
Ø SCL®, Shared Connection Link.
o Smartphone host device transmits audio signal to a large of number of devices seamlessly, not just 2 devices.
Ø Audio PWM
o 4-Channel audio PWM with differential outputs
o Configurable audio PWM modulation frequency from 384kHz, 768kHz to 2,304kHz
o Spread spectrum to lower PWM EMI
o Support 384k/32bit input
o HD audio (20Hz-40kHz)
o Directly connects to MOS FETs or power stage to replace power amplifier
Ø Digital audio interface
o 2 stereo ECM mic inputs in single-ended
o I2S input and output either master or slaver
Ø Real Time Clock
o Dedicated power supply
o Active current is less than 10uA
o External 32k crystal or internal RC 32k oscillator
o Enable system power on or off
o Wake up system by Alarm, Key, IR and CEC
o Dual alarm clock
Ø Peripheral
o USB 2.0 (high speed, 480 Mb/s) OTG and compatible with USB_C
- Type C or USB headphone with 192k/24bit
- Decoding audio stream from USB stick
o Hardware IR, UART, SPI, I2C, PWM, Rotary, JTAG and GPIOs
o 12-bit ADC for general purposes
Ø Software
o Free RTOS
o Based on previous SoC SDK
o Firmware upgrade via USB or OTA
Ø Package
o QFN52 (6mm x 6mm)
Ø Applications
o Wired or wireless headphones and earbuds
o Bluetooth speaker
o Audio system
o Wireless Karaoke microphone
o Smart speaker
