Getting Started

---

目录

• XR871 OVERVIEW（XR871简介）

---

XR871-OVERVIEW（XR871简介）

XR871 is a highly integrated low-power WLAN Microcontroller System-on-Chip (SOC) solution designed for Internet of Things (IoT), Wearable equipment, Machine-to-Machine (M2M), Home automation, Cloud Connectivity and Smart Energy applications.

XR871是一款高集成度低功耗WLAN微控制器SOC解决方案，它可以广泛用于物联网（Internet of Things），可穿戴设备，智能家居，云链接和各种智能应用

The XR871 application subsystem is powered by an ARM Cortex-M4F CPU that operates up to 192MHz. It supports an integrated 448KB SRAM and 64KB ROM, and a QSPI interface to external Flash. An integrated Flash Cache enables eXecute In Place (XIP) support for firmware from flash. It also includes many peripherals, including UART, TWI, SPI, I2S, DMIC, PWM, IrDA (T/R), CSI, SDIO and auxiliary ADC.

XR871应用子系统集成ARM Cortex-M4F内核，最高频率到192MHz，并集成448KB SRAM和64KB ROM，同时支持QSPI FLASH扩展。结合内部的FLASH缓存可以支持外部FLASH上指令的就地执行（eXecute In Place）功能。该应用系统还集成了很多外设，包括UART，TWI，SPI，I2C，DMIC，PWM，IrDA(发送/接收），CSI，SDIO和ADC功能

The WLAN subsystem contains the 802.11b/g/n radio, baseband and MAC that designed to meet both the low power and high throughput network application.

XR871网络子系统集成802.11b/g/n射频，基带和MAC实现，同时满足低功耗和高吞吐的应用需求

The SoC is designed for low-power operation and there is a separate power management unit for each subsystem. Multiple power domains and clocks can be individually shut down and the application and WLAN subsystems can be placed into low-power states, independently, to support a variety of application cases.

XR871集成一个独立的PMU单元来实现低功耗管理，多电源域和时钟域的设计让各子系统能够独立运作或关闭，应用和网络子系统能够单独的进入低功耗状态以满足各种应用场景