Allwinner V3s
The V3s processor represents Allwinner’s latest achievement in video encoding processors, which integrates a single ARM CortexTM-A7 CPU that operates at speed up to 1.2GHz with supporting numerous peripherals. The processor targets the need of the growing Car Digital Video Record (DVR) and IP Camera (IPC) Monitor System. A 512Mbit DDR2 is highly integrated in the V3s, in addition the V3s has optimized external memory interfaces to SPI NAND /Nor flash, SD/MMC.FEATURES
2.1.1. CPU Architecture● ARM CortexTM-A7 MP1 Processor
● Thumb-2 Technology
● Support NEON Advanced SIMD(Single Instruction Multiple Data)instruction for acceleration of media and signal processing functions
● Support Large Physical Address Extensions(LPAE)
● VFPv4 Floating Point Unit
● 32KB L1 Instruction cache and 32KB L1 Data cache
● 128KB L2 cache 2.1.2. Memory Subsystem 2.1.2.1. Boot ROM
● Internal on-chip memory
● Size:32KB
● Support system boot from the following device: - SPI Nor flash - SPI Nand flash - SD/TF card - eMMC
● Support system code download through USB OTG 2.1.2.2. SDRAM
● Internal on-chip memory
● Integrated a 512Mbit DDR2 in V3s processor
● Support clock frequency up to 400MHz
● Support Memory Dynamic Frequency Scale(MDFS) 2.1.2.3. SD/MMC Interface
● External off-chip memory and storage device
● Up to three SD/MMC controllers
● 1/4-bit SD,SDIO,MMC mode V3s Datasheet(Revision 1.0) Copyright© 2014 Allwinner Technology Co.,Ltd. All Rights Reserved. Page 41...