参数资料
型号: IP-SDRAM/DDR2
厂商: Altera
文件页数: 95/106页
文件大小: 0K
描述: IP DDR2 SDRAM CONTROLLER
标准包装: 1
系列: *
类型: MegaCore
功能: DDR2 SDRAM 控制器
许可证: 初始许可证
B. DDR SDRAM on the Nios Development
Board, Cyclone II Edition
This appendix walks you through the procedure for using the Altera DDR SDRAM
Controller MegaCore function with the Nios ? II processor and SOPC Builder. To
ensure that you create a reliable working system, follow these steps:
1. In SOPC Builder, when adding a DDR SDRAM component for a system with the
Nios Development Board, Cyclone ? II Edition, use the specific IP Toolbench
preset. All other wizard settings are then correct.
1
You may have to change some signal names (refer to step 6 ).
2. During the generation of an SOPC Builder system that contains a DDR SDRAM
controller component, SOPC Builder creates a PLL source file ( .v or .vhd ) and a
symbol file ( .bsf ) to synthesize the DDR SDRAM clocks. The PLL source and
symbol file names are ddr_pll_cycloneii . This PLL must be instantiated at the top
level of the design and should drive the DDR write_clk signal and the main
system clock. The c1 output of the PLL has a 270o phase shift and is the PLL
output that you should connect to the DDR SDRAM controller ’s write_clk .
1
Use the same PLL to drive both the DDR SDRAM write clock and the system clock, to
reduce clock skew between the two clocks. Figure B–1 shows an example of how you
should connect the PLL in a top-level schematic for an SOPC Builder system that
contains a DDR SDRAM controller and two system clocks.
Figure B–1. Example of DDR SDRAM PLL Connections
? March 2009
Altera Corporation
相关PDF资料
PDF描述
IP-SLITE2 IP SERIALLITE II
IP-SRAM/QDRII IP QDRII SRAM CONTROLLER
IP-VITERBI/SS IP VITERBI LOW-SPEED
IP4220CZ6,125 IC USB DUAL ESD PROTECT 6TSOP
IPA-66-1-600-10.0-A-01-T CIRC BRKR 10A 2POLE SCREW TERM
相关代理商/技术参数
参数描述
IPSE.4.33SM600 制造商:Banner Engineering 功能描述:FIBER IPSE.4.33SM600 GLASS FIBER (MIN ORDER 50)
IPSE.4.62SM600 制造商:Banner Engineering 功能描述:FIBER IPSE.4.62SM600 GLASS FIBER (MIN ORDER 50)
IPS-EMBEDDED 功能描述:开发软件 Embedded IP Suite MegaCore RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
IPS-EVAL-EH-01 功能描述:ENERGY HARVESTING BOARD RoHS:是 类别:编程器,开发系统 >> 评估演示板和套件 系列:THINERGY® 标准包装:1 系列:- 主要目的:数字电位器 嵌入式:- 已用 IC / 零件:AD5258 主要属性:- 次要属性:- 已供物品:板 相关产品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP
IPS-EVAL-EH-02 制造商:Infinite Power Solutions 功能描述:BOARD EVAL WIRELESS SENSING