Allwinner R528

Overview

Allwinner R528 is an advanced application processor designed for intelligent speaker application. It integrates the high-performance dual-core Cortex-A7 and single-core HiFi4 DSP to provide efficient computing power. Allwinner R528 supports full format decoding such as H.265, H.264, MPEG-1/2/4, and JPEG. The independent encoder can encode in JPEG or MJPEG. Integrated multi ADCs/DACs and I2S/PCM/DMIC/OWA audio interfaces can work seamlessly with the CPU to accelerate multimedia algorithms and improve user experience. Allwinner R528 supports RGB/LVDS/MIPI DSI display output interfaces to meet the requirements of the screen display. To reduce BOM cost, DDR3 or DDR2 die is embedded for Allwinner R528. It also comes with extensive connectivity and interfaces, such as USB, SDIO, EMAC, TWI, UART, SPI, PWM, GPADC, LRADC, TPADC, IR TX&RX, etc. Allwinner R528 can connect with other different peripherals like WiFi and BT via SDIO and UART.

Integrate dual-core Cortex-A7, single-core HiFi4 DSP, SIP DDR3 or DDR2, and high performance 3 ADCs, 2 DACs, 3 I2S/PCM, 8 digital microphones, providing excellent voice interaction solutions

Support H.265/H.264 1080p decoding and SmartColor2.0 post processing to deliver outstanding video entertainment experience

Rich peripheral interfaces such as RGB, LVDS, MIPI DSI, USB, SDIO, EMAC, TWI, UART, SPI, PWM, GPADC, LRADC, TPADC, IR TX&RX, greatly facilitating product expansion

Advanced process design with lower voltage and lower leakage, power optimisation design for typical scenes, and enhanced heat dissipation package to improve heating experience

Block diagram

Specifications

CPU

Dual-core ARM Cortex-A7

32 KB L1 I-cache + 32 KB L1 D-cache per core, and 256 KB L2 cache

DSP

Single-core HiFi4

32 KB I-cache + 32 KB D-cache

64 KB I-ram + 64 KB D-ram

Memory

SIP 64 MB DDR2 (R528-S2)

SIP 128 MB DDR3 (R528-S3)

SD3.0/eMMC 5.0, SPI Nor/Nand Flash

Video decoding

H.265 up to 1080p@60fps

H.264 up to 1080p@60fps

H.263, MPEG-1/2/4, JPEG, Xvid, Sorenson Spark, up to 1080p@60fps

Video encoding

JPEG/MJPEG up to 1080p@60fps

Support input picture scaler up/down

Display engine

Allwinner SmartColor2.0 post processing for an excellent display experience

Support de-interlace (DI) up to 1080p@60fps

Support G2D hardware accelerator including rotate, mixer, lbc decompression functions

Video OUT

RGB LCD output interface up to 1920 x 1080@60fps

Dual link LVDS interface up to 1920 x 1080@60fps

4-lane MIPI DSI interface up to 1920 x 1200@60fps

Video IN

8-bit parallel CSI interface

Support 8-bit digital camera interfaces (RAW8/YUV422/YUV420)

Support BT656, BT601 interfaces (YUV422)

Audio

2 DACs and 3 ADCs

Analog audio interfaces: MICIN1P/N, MICIN2P/N, MICIN3P/N, FMINL/R, LINEINL/R, LINEOUTLP/N, LINEOUTRP/N, HPOUTL/R

Digital audio interfaces: I2S/PCM, DMIC, OWA

Security system

AES, DES, 3DES encryption and decryption algorithms

RSA signature verification algorithm

MD5/SHA and HMAC tamper proofing

Hardware random number generator

Integrated 2 Kbits OTP storage space

Connectivity

USB2.0 DRD, USB2.0 Host

SDIO 3.0, SPI x 2, UART x 6, TWI x 4

PWM (8-ch), GPADC (2-ch), LRADC (1-ch), TPADC (4-ch), IR TX&RX

10/100/1000M EMAC with RMII and RGMII interfaces

Package

LFBGA 226 balls, 12 mm x 12 mm

Cost-effective solution for intelligent speaker with screen