XR-50A Offine voice+WiFi

Xr-50a WiFi module is mainly developed to meet the requirements of image acquisition, voice playback and recognition as well as wireless transmission applications. The core processor xr872at integrates arm cortex-m4f MCU with operating frequency up to 384mhz in a small package, and integrates high-performance WLAN system, including Wi Fi MAC / BB / RF / PA / LNA unit It also integrates advanced power management unit, supports ultra-low power consumption, multiple sleep modes and fast wake-up mechanism, integrates hardware encryption engine, supports AES / DES / 3DES / Sha / MD5 / CRC encryption methods, and integrates rich peripheral interfaces, such as I2S, SDIO, CSI, UART, etc. Xr-50a WiFi module supports standard IEEE802.11 B / g / N protocol, RTOS and complete TCP / IP protocol stack.

Users can also use the module to add networking functions to existing devices, or build independent network controllers. When carrying the application and acting as the only application processor in the device, it can boot directly from the external flash memory. The built-in cache memory can improve system performance and reduce memory requirements.

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1.2 characteristics

◼  IEEE 802.11b/g/n, 1x1 SISO 2.4GHz

◼  Built in arm cortex-m4f 32-bit micro MCU, main frequency up to 384mhz

◼  Built in 416kb SRAM, 160kb ROM and 4m PSRAM

◼  Support external flash and execute in place (XIP) mode

◼  Built in eFuse with 1024 bits

◼  8-channel shared universal DMA channel

◼  Built in 8-channel 12 bit resolution and 10 bit effective SAR A / D converter, including 7 common channels and 1 Vbat voltage detection channel

◼  Integrated Wi Fi MAC / BB / RF / PA / LNA

◼  Support WEP, WPA / WPA2, wps2.0

◼  Support UART / GPIO / ADC / PWM / I2C / I2S interface

◼  Support AES / DES / 3DES / Sha / MD5 / CRC encryption engine

◼  Support STA / AP / sta + AP working mode

◼  Support smart config / airkiss (wechat) one click distribution network

◼  Support serial port local upgrade and remote firmware upgrade (FOTA)

◼  General at command can be used quickly

◼  It supports secondary development and integrates windows and Linux development environment

◼  The integrated audio subsystem includes a digital microphone controller with left and right channel voice input, a 24 bit audio digital analog (DAC) channel, which supports sampling rates from 8kHz to 192Khz, a 24 bit audio analog-to-digital (ADC) channel for microphone input, supporting a sampling rate of 8kHz to 48Khz, and a 24 bit audio digital analog (DAC) channel for line input Bit audio digital (ADC) channel with sampling rates from 8kHz to 48Khz

◼  The integrated video subsystem supports JPEG and YUV encoding modes, supports nv12 input format in offline encoding mode, and supports configurable image resolution. The minimum image resolution is 32x32, and the maximum image resolution is 1920x1088