在memory_config_g.c文件内给出了测试的起始地址0Xa8000000和测试的空间大小134217728(0x08000000),可以看出,包含了整个DDR3内存范围。 ◎接着是测试函数test_memory_range。这个函数是对存储测试的主要程序。先测试1024地址空间进行32bit的读写,写入0Xaaaa5555,读出校验位。再对2048地址空间的16bit数据读写,写入0Xaa...
PC3-10600是DDR3 1333内存 PC3-12800是DDR3 1600内存 PC3L-12800是DDR3 1600 低电压内存,向下兼容1333和1066
图10 DDR4设计 DRAM内部VREFDQ通过寄存器(MR6)来调节,主要参数有Voltage range, step size, VREF step time, VREF full step time ,如下表所示。 表4 参考电压 每次开机的时候,DRAM Controller都会通过一系列的校准来调整DRMA端输入数据信号的VREFDQ,优化Timing和电压的Margin,也就是说,VREFDQ 不仅仅取决于VDD,...
The DDR3 VDD Voltage setup allows the user to change on-the-fly the test voltage in the range 1.35V-1.8V. When set to AUTO, RAMCHECK automatically tests the module at 1.5V/1.6V. In this example, the user is selecting a VDD of 1.57 Volt. The RAMCHECK LX provide advanced setup fea...
Specifications: Memory Frequency: 1333 MHz, 1600 MHz, 1866 MHz Sequence: 11-11-11 Cooling Fin: No CL Value: 9, 11 Memory Type: DDR3, DDR2 Capacity: 2GB, 4GB, 8GB Voltage: DDR3=1.5V, DDR2=1.8V Color: Black, Green (Random delivery) Features: |Which Cl Is Better For Ram| **Enha...
CONTROLLER_CLK_PERIODclock period of the controller interface in picoseconds. Tested values range from12_000ps (83.33 MHz) to10_000ps (100 MHz). DDR3_CLK_PERIODclock period of the DDR3 RAM device in picoseconds which must be 1/4 of theCONTROLLER_CLK_PERIOD. Tested values range from3_000...
Choose from a range of capacities and select the ideal size that matches your computing requirements. 4GB RAM Memory with a DDR3 technology that makes your computer more capable in handling files and applications than before. Speeds of 1333/1600 MHz for smooth multitasking...
30x PC3 8GB 1600MHz 30x PC3L 8GB 1333MHz 30x PC3L 8GB 1600MHz Product sellpoints Optimized for Laptop Use:With a 204-pin interface and CSA Latency of CL7/CL9/CL11, this RAM is designed for smooth laptop operation. 4gb Ram Laptop|16g Ram Laptop|High-Quality Brand:Hynix SODIMM RAM ensu...
Memory Frequency:Rock-solid 1600 MHz frequency for smooth, responsive performance in demanding applications. Memory Type:DDR3 technology ensures compatibility with a wide range of existing desktop setups. Can Use A 16gb And 8gb Ram Together|Pearson Ram|Compatibility:Seamlessly integrates with AMD and ...
布线调整后再次对1.5V电源平面进行阻抗仿真,结果如图12所示,阻抗值最大值在100MHz只有154毫欧,最终达到目标要求。 图12 去耦电容调整后仿真结果(红线) 从以上实践来看,Alliance的DDR3内存AS4C64M16D3A-12BIN它的pad排布特点确实使得其自身的PI容易达到目标,只要去耦电容跟电源平面和地平面连接好一些,PI就能轻易达标...