A5XX-- single-chip speech controller

gxm771208

百度云附件：A5XX_DataSheetv1.0.pdf   

The A5XX is a highly integrated single-chip speech controller. It is built in 8-bit MCU for I/O and data
flow control and embedded DSP for real-time speech signal processing. This SoC is powerful to implement
the voice human interface by the build-in automatic speech recognition and noise reduction technology.
There are HW accelerators and proprietary memory architecture to support the low power and low cost
application product. This chip also integrates the necessary peripherals for the data access & storage.
To environment friendly purpose, A5xx applies ma ny energy-saving and acceleration technologies.
All materials and process of A5 xx production follow RoHS rules.
1.1 Features
• Processor Core
。16-bit DSP with on-chip program ROM/data RAM
。8-bit MCU with on-chip program ROM, program RAM and data RAM
。Programmable MCU/DSP operating clock
• Peripherals
。Sigma-Delta ADC, built-in microphone amplifier and AGC function
。Built-in Microphone bias to improve PSRR and reduce noise for recording
。Support Analog/Digital microphone interface
。Sigma-Delta DAC line output and speaker output
。Programmable PWM output
。8-channel 10-bit SAR ADC
。Flash I/F 􀃆 NAND/serial NOR I/F
。SPI interfaces for 2.4G RF modules
。Bi-direction UART up to 38400 baud rate
。USB2.0 & USB1.1 device
。SD/MMC card interface
。LCM 8080/6800 interface

• System features
。Built-in up to 16 programmable GPIO
。Built-in LDO and VDT
。Build-in Power-in Reset circuit (POR)
。Built-in MCU JTAG I/F
• Library support key technology
。Automatic Speech Recognition (ASR) features
◎ Speaker independent & dependent recognition and Speaker verification
◎ Keyword spotting
◎ Voice barge-in
◎ Utterance assessment
◎ Up to 200 commands recognition
。Dual microphone array
◎ Beam forming for background noise reduction
◎ Interference estimation for noise reduction
。ADPCM record/playback
。MP3 playback
• Operating voltage :
。I/O : 3.3 V in normal power mode and 3.0 V in low power mode
。Core : 1.8 V in normal power mode and 1.5 V in low power mode
• 64-pin LQFP package
• Applications:
。Smart toy
。Noise reduction module
。Smart remote controller
。E-learning