Specifications

1 Overview
 ASV1108(Ehong Smart Voice) is an intelligent voice suite with integrated voice triggering
function. Use the Conexant CX20921 Platform, CX20921 is a high performance far field
speech input processor on the chip system，support low system power Wakeon-Voice（WoV）
function, support SSP output, noise suppression and full duplex Acoustic Echo Cancellation
（AEC）.
 Support multiple extension ports, speaker interface, headphone jack.
 Support analog MIC and digital MIC.
 Support USB2.0
 Support Mute Button and Wake-up Button.
 Carry Qualcomm WL501 board Development Board, used for building wireless smart
audio, smart home appliances, internet of things and other devices.
1.1 Features
Cores
• C-programmable dual core 32-bit DSP (CAPE) with X and Y data, P memory spaces running
at worstcase
200MHz, and yields 800MIPS
• Each core has dual Multiply-Accumulate (MAC) and dual memory
• Fixed point DSP with floating point assist
• Each MAC supports 32 x 24-bit and 64-bit accumulators
• Supports zero-overhead loop, circular buffers, and bit-reverse indexing
• 32-bit Arithmetic Logic Unit (ALU) that supports efficient bit manipulation
• Data memory access is 16-bit, 32-bit, and 64-bit
• Virtually all programming is done in C, using a very efficient C-compiler from Target
• Natively supported data types include: int, short, long, long long, Q15, Q23, Q8.23, and Q31
• Support two speakers, and two MIC.