In this course, we'll explore essential DDR4 measurements and share advice for designers that are moving from DDR4 to DDR5.
Lesson 1 - Introduction - DDR4 and DDR5 memory
Introduces the DDR4 and DDR5 memory standards, and discusses the key differences between the two standards. It also covers the benefits of DDR5, such as its increased bandwidth and power efficiency.
Lesson 2 - DDR Overview
Provides an overview of the DDR memory architecture, including the different components of a DDR memory system. It also discusses the DDR memory protocol, and how data is transferred between the memory controller and the memory modules.
Lesson 3 - New DDR4 Measurements
Learn the new DDR4 measurements that are required to ensure compliance with the DDR4 standard. These measurements include the DDR4 receiver compliance tests, which are used to verify the performance of the DDR4 memory modules.
Lesson 4 - Changes with DDR5
Review the key changes that have been made to the DDR5 standard compared to DDR4. These changes include the increased clock rate, the increased bandwidth, and the new features such as the on-die termination (ODT).
Lesson 5 - Summary - DDR4 and DDR5 memory
Summarizes the key points of the course, and provides a brief overview of the future of DDR memory.
DDR4 Bit Error Rate Measurements
Historically, DDR (double data rate) has defined its timing specifications with a belief of a zero bit error rate (BER). While a zero bit error rate is statistically not possible, timing budgets had enough margin to justify the method of specification and measurement. With each generation of DDR Synchronous Dynamic Random Access Memory (SDRAM), speeds increase, package sizes decrease, and power consumption decreases. (See Table 1). Added challenges come with these improvements of decreased design margins, signal integrity, and interoperability. Latest DDR technology offers data rates of 3.2Gb/s or higher. Each picosecond now matters and can be the difference in passing and failing bits.
DDR4 Functional/Protocol Debug and Analysis Reference Solution
When DDR4 memory systems don’t behave as expected, Keysight’s DDR4 functional/protocol debug and analysis solution provides trace capture and analysis, enabling the insight needed to understand system behavior and get to the root cause of system issues.
High-Performance Digital Products
Today’s enterprise and consumer products are driving the need for faster processing at lower power consumption and pushing your design margins to the extreme. Consumer technologies, communication infrastructure, data centers, pure science, electronic warfare, and quantum computing are driving measurement limits.