1.1. Smart Speaker Solution Introduction

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• Power supply：Battery; 5V/2A,5V/1A AC/DC powers adapter or PC USB power supply
• Storage：128MB SPI NAND Flash;
• Audio out：Audio Right/Left; PWM analog audio output;
• MIC array：4 channels PDM interface support 8 DMIC audio inputs at most; There is one BIAS power supply for every PDM;
• Connectivity：Use SDIO interface to connect WIFI module and use UART interface connect BT module;
• USB：One USB2.0 HOST interface and one USB2.0 Slave interface;
• OS：YodaOS based on Linux kernel;
• Cloud platform：Access Rokid voice service cloud platform by default; The 3^rd cloud platform also can be accessed.
• Low power design：Through Voice subsystem(MCU+DSP), low power voice wakeup modules can be supported on K18;