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is a miniature and compact main board which is equipped with a cost-effective RK3308 Core Processorand a high-performance CODEC. It can support various artificial intelligence and IOT operating systems,and can be configured with six microphone array board and POE expansion board. ROC-RK3308-CC is a kindof AI+IOT open source main board incorporating many kinds of functions.
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Quad-Core 64-Bit AIOT MainBoard
It is a miniature and compact main board which is equipped with a cost-effective RK3308 Core Processorand a high-performance CODEC. It can support various artificial intelligence and IOT operating systems,and can be configured with six microphone array board and POE expansion board. ROC-RK3308-CC is a kind of AI+IOT open source main board incorporating many kinds of functions.
Cost-effective Quad-core Processor
It's equipped with cost-effective RK3308 64-Bit Quad-Core ARM Cortex-A35 processor, frequency up to1.3GHz, and with high-performance CODEC and VAD, which can be used for development of the smart audiosolution, automatic speech recognition, etc.
Support Operating Systems And Services
ROC-RK3308-CCsupports the Buildroot system now and is about to support ROS, AliOS Things and other operatingsystems. The voice service function supports four-voice suits: Baidu DuerOS, AISpeech, iFLYTEK, and Amazon Alexa later. Rich operating system/service support for AIOT development and productapplication easily.
Configure Far-fieldMicrophone Array Board
It can be configured with a far-field microphone array board, including 6 digital microphones, 12three-color LEDs, 5keys. It supports keyword wakeup, echo cancellation and noise reduction, VAD (Voice ActivationDetection) and soundsource location etc., which can significantly improve the accuracy and precision of automatic speechrecognition.
Support MCU Display Screen
Themain board can support MCU Display Screen with the maximum resolution of 480P, which can make displaysimpler andmore convenient.
Rich Expansion Interfaces
Equippedwith 40Pin expansion interfaces, including I2C x 3, LCD, PWM x 3, SPI x 1, I2S x 1, SPDIF RX, UART x 2(oneUART is used as Debug) and other interfaces, and can support POE expansion.
Open SDK, tutorials,technical materials and development tools to make development easier and more convenient.
RK3308 (28nm process)
Quad-core Cortex-A35, frequency up to 1.3GHz
Support 128MB-512MB DDR3
NandFlash: Support 128MB, 256MB
eMMC: Support 4GB-128GB
SPI Flash：16MB ~512 MB
Support MicroSD (TF) Card Slot expansion
100M Ethernet (RJ45 interface)
Support 802.11 b/g/n protocol, support Bluetooth 4.2
Support 8-bit MCU Display Screen, of which the resolution is up to 480P
With built-in audio CODEC, including ADC×8 and DAC×2
USB 2.0 × 1、OTG × 1（Type-C）
Debug UART×1, be used for development and debugging
Recovery × 1
POE (IEEE802.3AT standard)
I2C×3 (iomux), UART×2 (one is for Debug), SPI×1, PWM×3
I2S×1 (iomux), LCD (8-bit MCU)
ADC×2, LINEOUT, SPDIF IN/OUT
Module pattern: Circular
Number of array element: 6
Module size: Diameter of 86mm
Wakeup distance: > 20m
Identification distance: > 5m
Signal-to-noise ratio: SNR > 63dB
Operating temperature: -20°C - 80°C
Sound source location: Horizontal 360°
Location accuracy: ±12°
Support keyword wakeup, sound source location, noise suppression and VAD
Support the conversational artificial intelligence operating system: DuerOS,
Amazon AVS（Alexa Voice Service),
Ali embedded operating system of IOT: AliOS Things,
Open source robot operating system: ROS (Robot Operating System)
85 mm × 56 mm
ROC-RK3308-CC Wiki - Chinese (English version will be available in Apr.)
ROC-RK3308-CC Original Firmware
ROC-RK3308-CC Firmware for Alexa
ROC-RK3308-CC Firmware for Dueros
ROC-RK3308-CC Firmware for aispeech
ROC-RK3308-CC_Firmware for iflytek
roc-rk3308-cc schematic v00.pdf
Rockchip RK3308TRM Part1 & Part2