TXW826

The TXW826 is a low-power, high-performance, highly integrated wireless audio/video SOC. It integrates 2.4GHz Wi-Fi, BLE, and SLE, high-performance ISP image processing, and H.264/MJPEG encoding, offering excellent RF performance, superior image processing capabilities, high-quality encoding, and lower bitrates. At the same time, it integrates a security algorithm acceleration engine and has a complete set of peripheral interfaces, including audio ADC/DAC, MIPI CSI-2, RMII MAC, USB 2.0 High-Speed Host/Device, SDMMC Host, IIS, PDM, and other peripherals.

Features

Wi-Fi MAC & PHY

• Supports IEEE 802.11 b/g/n standards
• Supports 1T1R mode with data rates up to 150Mbps
• Built-in PA, LNA, and RF switch
• Supports STA, AP, AP+STA (relay), STA+STA functions
• Supports RX STBC (Space Time Block Coding)
• Supports WPA/WPA2/WPA3

BLE

• Supports Bluetooth network configuration
• Supports Wi-Fi/BLE PTA coexistence

Video

• Supports video data sources via UVC, SPI camera input, 1 lane or 2 lane MIPI-CSI camera
• 1 H.264 encoder, supporting a maximum resolution of 1920*1080 @ 30fps
• 1 MJPEG codec, supporting a maximum resolution of 1920*1080 @ 30fps
• Supports time watermark, colorful photo frame, motion detection, and optical flow algorithm hardware acceleration

Audio

• Supports single-ended and differential input high-performance analog microphones with built-in PGA.
• 1 delta-sigma audio ADC.
• 1 delta-sigma audio DAC.
• Supports sampling rates of 8/11.025/12/16/22.05/24/32/44.1/48/96 kHz.
• Analog MIC with differential input option, built-in PGA

Graphic

• Graphic 2D DMA

ISP

• Maximum resolution of 1920*1080 @ 30fps
• Supports dual-channel time-division multiplexing
• Supports 3A (AWB, AE, AF) and adaptive 2D/3D noise reduction
• Pixel defect correction and lens shading correction
• Image enhancements(brightness, sharpness, contrast, tone, and saturation adjustment)
• Motion detection
• Supports infrared coloring

LCD

• Supports RGB interface, MCU8080 interface, and MCU6800 interface for LCD screen display.
• Supports image scaling, 90/180/270-degree rotation, and horizontal and vertical mirroring.
• Supports image OSD (On-Screen Display) and alpha blending.
• Supports CCM (Color Correction Matrix), gamma correction, saturation, and contrast adjustment.

Core

• CPU0 with DSP instructions and hardware floating-point Xuantie E804FD, maximum clock speed 240MHz
• 32KB I-cache 、32KB D-cache
• 272KB SRAM(Max 560KB)
• Supports various external frequency crystal oscillators(24-50MHz) and shared crystal oscillator input with the system main control chip
• Supports RTC
• Supports 32KHz crystal oscillator
• 19 timers
• Supports ULP and LP low power modes with ULP mode current < 10uA @25°C, and multiple IO wake-up support
• Built-in temperature sensor
• Built-in LVD detection
• Built-in watchdog
• 48-bit unique chip ID (UID)
• Built-in multi-channel LDO output, output voltage range 1~3.3V

Peripherals

• 28 programmable GPIOs, support edge or level triggered interrupts
• 1 10-bit ADC
• 2 analog comparator
• 1 QSPI, support external 1.8/3.3V SPI FLASH(Max 256MB)
• 1 OSPI, support built-in PSRAM
• 2 I2S/PCM
• 1 PDM
• 2 SDIO2.0 Host Controller
• 1 USB1.1 Full Speed Device/Host
• 1 USB2.0 Full Speed Device/Host
• 3 SPI interfaces Master/Slave (2 configurable as IIC Master/Slave)
• 5 UART interfaces (1 supports flow control and RS485)
• 2 infrared transmitters (1 supports IrDA) and multiple receivers
• 14 PWM outputs (multiplexed with timer), including 4 independent 16-bit PWM, support low power mode PWM

Boot Interfaces

• USB2.0 Device, UART
• SPI FLASH, SPI NAND FLASH\SD NAND、SD/MMC/eMMC

Security

• Support for AES 128/192/256 ECB/CBC/CTR encryption and decryption
• Support for SHA256
• Support for 5/7/8/16/32-bit CRC checking
• Support for SPI Flash firmware encryption protection
• TRNG (True Random Number Generator)

Temperature Range

• -40°C to 85°C

Package Options

Model	Package	SRAM	Flash	PSRAM	USB2.0	MIPI CSI-2	MIPI-DSI	H.264	DVP	MJPEG Codec	SDIO	LCD	Low Power
TXW826-824	QFN48	368KB	2MB	4MB	✔️	✔️		✔️			✔️	✔️