Avalon Multi-port DDR2 Memory Controller

The Avalon Multi-port DDR2 Memory Controller IP Core is designed for maximizing the performance of an Altera Nios II processor in Avalon® multi-master streaming data systems. Advanced design features enable maximum system clock rates using low speed FPGA's and standard memory devices, lowering your production cost, and saving you money.

The Avalon-MM slave ports can be independently clocked allowing the system to be partitioned and optimized to achieve maximum performance. Supporting post memory read and write cycles, the data FIFO's effectively double memory bandwidth on sequential address or FIFO cache hits. FIFO depth can be tailored for either streaming or random access.

The core is optimized for Altera® Cyclone, Arria and Stratix device families of field programmable logic devices. The Avalon Slave ports are configured with Qsys GUI which greatly simplifies the design of Avalon-MM based SOC systems.

The DDR2 Memory Controller handles all memory tasks, including initialization and refresh cycles. It is designed to operate asynchronous to the local port clocks enabling the memory to be clocked at its peaked rated frequency maximizing system performance.

• 200 / 333 MHz (400/666 Mbps) Cyclone/Stratix DDR2 memory performance
• DDR2 Memory Devices
• From 1 to 16 Avalon-MM local bus port interfaces
• Memory bandwidth utilization in excess of 95%
• Avalon Pipelined and Burst transfers
• Avalon local bus width from 8 to 128-bits
• Memory data width: 8/16/32/64-bit
• Configurable FIFO depth: 16 to 2048 bytes
• Intelligent SDRAM burst caching controller minimizes wait-states
• PCB layout independent DDR2 Round-Trip capture scheme
• Requires only single PLL with 2 clock outputs
• Independent system/memory time domain clocking
• Supports: Cyclone II, III, IV-E, IV-GX, V, Stratix II, II-GX, III, IV/IV-GX and Arria GX/II-GX

• MegaWizzard GUI for ease of configuration
• Requires only single PLL with 2 clock outputs
• DQS data capture clocking simplifies DDR2 PCB constraints and eliminates dedicated data capture PLL
• Configurable FIFO maximizes performance of streaming data applications
• Configurable memory and local bus data width optimizes cost
• Independent time domain clocking optimizes memory bandwidth
• Round-robin (dafault) and user configurable bus arbitration schemes
• Synopsis TimeQuest support ensures timing closure

• Altera SOPC Builder Ready & Qsys Configuration GUI
• Supports Synopsys TimeQuest timing analyzer
• VHDL IP functional simulations models
• On Die Termination (ODT) improves signal integrity
• IP Core license includes 1 year of maintenance updates
• Altera OpenCore Plus evaluation