Features
The PineBuds Pro’s buds are based on the BES 2300YP.
CPU Features:
Dual-core ARM Cortex-M4F Processor Processor up to 300MHz CPU
CMOS Single-chip Fully-integrated RF, PMU, Audio CODEC and Cortex-M4F CPU
Memory Features:
4MB Serial Flash On-chip for Custom Program
Internal ROM 448KB for critical constants and code
Internal SRAM 992KB for critical data and code
BT Features:
Bluetooth 5.2 dual-mode compliant
Profiles: A2DP, AVRCP, HFP
Audio Codecs: SBC, AAC
Audio Features:
Support BES Intelligent Bluetooth Retransmission (IBRT)
Support FF/Hybrid ANC
Dual MICs noise reduction
Echo Cancellation
Support low power voice activity detection
Multi-band EQ and Bass enhancement
Support Active Crossover
Support TWS
HiFi Stereo Audio DAC: 120dB SNR, 110dB DNR
HiFi Stereo Audio ADC: 100dB SNR
Sample rates from 8 kHz to 384 kHz
Support dual/single Mic noise suppression
-45dB attenuation nominal 50-200Hz
-55dB max attenuation @150Hz
Support ambient awareness
Support talk through
24-bit audio processing
PMU Features
3.1V-5.5V Input for VBAT
Internal LPO for low power mode.
DCXO with internal oscillator circuit
Internal temperature sensor
Buttons/touch sensors
Buds
One capacitive touch sensor is located on the outward facing surface of each bud near the logo.
Charging case
Charging case have a reset button in center under the lid which is hooked to ThinkPlus Semi SY8821 integrated circuit and that button reset it from the safety off mode.
Specifications
Dimensions:
Earbud: Unknown
Charging case: 70 x 50 x 35mm (unconfirmed)
Weight:
Earbud: 5g
Charging case: 65g
IP Rating of Earbuds: IPX4
Dynamic transducer (speaker): 6mm
Microphone: 3 – FeedForward, FeedBack, Talk
System on Chip (in each earbud): BES 2300YP
CPU: Dual-core 300MHz ARM Cortex-M4F
ROM: 448KB
SRAM: 992KB
BT shared SRAM: 64KB
Flash: 4MB (Endurance erase cycles: >500)
Communication:
Bluetooth: Bluetooth 5.2 dual-mode compliant
USB: USB to dual UARTs at charging case
Battery:
Earbud: Built-in LiPo 3.7V 40mAh
Charging case: Built-in LiPo 3.7V 800mAh
Ports earbud:
4 pins
Ports charging case:
4 pogo pins
USB type-C port 5V 500mA
Power
The charging case’s input power is DC 5V @ 0.5A USB Type-C.