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Physical-layer (PHY) electrical tests for DDR5 transmitter compliance involve executing a wide range of conformance tests defined by the Joint Electron Device Engineering Council (JEDEC). The JEDEC specifications for the fifth generation of double data rate memory (DDR5) include an exhaustive list of conformance measurements and test cases required for transmitter compliance.
When testing your DDR5 devices, automate the calibration, setup, execution, and documentation of your compliance tests with purpose-built hardware and software. Ideally, use a high-bandwidth oscilloscope (25 GHz+) with a high effective number of bits, high-bandwidth probes designed for minimal effects on the measured signal, and interposer boards for probing as close to the silicon as possible. Couple this with software for test configuration, execution, evaluation, automation, and report-generation.
How to Test DDR5 Transmitter Compliance
EZJIT Software for 90000/V-/Z-/UXR-Series Oscilloscopes
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Compliance Test Applications | Ethernet |
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How to Test DDR5 Transmitter Compliance
Advanced Signal Integrity Software (EQ, InfiniiSimAdv, Crosstalk)
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Compliance Test Applications | Ethernet |
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How to Test DDR5 Transmitter Compliance
The D9050DDRC DDR5 Tx compliance test application software provides a fast and easy way to test, debug and characterize your DDR5 designs. DDR5 technology offers high data rate of up to 6.4GT/s which enables higher bandwidth for data transfer with lower power. The DDR5 Tx compliance software offers full test coverage to enable testing of transmitter physical layer of the DDR5 DRAM, data buffer and register chips.
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Compliance Test Applications | DDR |
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How to Test DDR5 Transmitter Compliance
The InfiniiMax 4 series probes are Keysight's high-bandwidth probing solution. This probe is meticulously engineered to tackle the complexities of assessing next-generation high-speed signals, delivering unparalleled performance and precision.
Bandwidth | Null |
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How to Test DDR5 Transmitter Compliance
The UXR0254A is the 25 GHz, 4 channel, Infiniium UXR-Series real-time oscilloscope.
Bandwidth | 25 GHz |
Max Memory Depth | 2 Gpts |
Max Sample Rate | 128 GSa/s |
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Additional resources for DDR5 transmitter compliance test
Testing a USB4 version 2.0 transmitter requires a high-performance real-time oscilloscope to capture and analyze transmitted PAM3 signals. Learn how compliance test software automates the test process and provides test results to show if your device passed or failed each test.
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Testing DDR4 (double data rate) compliance requires measurements such as eye diagram analysis, mask testing, and ringing, which are critical for characterizing DDR4 devices. Learn how to use an oscilloscope with automated test software to correlate simulated results with actual characterization measurements.
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Verifying Peripheral Component Interconnect Express (PCIe®) 5.0 transmitter compliance involves physical layer signal quality and transmitter equalization testing using a high-bandwidth oscilloscope. Learn how to quickly test for compliance using an automated PCIe 5.0 test solution.
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DDR testing is
crucial to ensure the reliability, performance, and compatibility of memory devices with other devices using technologies like DDR and LPDDR. It helps in identifying and rectifying
potential issues before deployment, ensuring stable operation and preventing
costly failures in systems. DDR compliance testing is also required for JEDEC certification.
DDR testing faces challenges due to the high speeds of DDR technologies such as DDR5, intricate signal integrity requirements, and the need for precise measurements within tight margins. Ensuring accurate signal capture, managing noise, and validating compliance with industry standards are among the key hurdles.
A DDR compliance test
typically requires specialized tools like oscilloscopes, bit error rate testers
(BERTs), low-loading probes, and compliance software. These tools enable testing for parameters
such as jitter, timing, eye diagrams, and electrical characteristics to ensure
that the DDR device meets industry standards and specifications.
For DDR testing, probes that provide accurate and reliable signal measurements are essential. High-quality, low-loading probes designed for high-speed digital signals are recommended. These may include differential probes, active probes, or specialized DDR probing solutions to ensure optimal signal integrity during testing.
Automated compliance test software offers time-saving benefits by streamlining the testing process. It allows for quick setup configurations, automated test procedures, and the ability to save and recall test setups. Additionally, the application provides efficient analysis tools, reducing the time required for manual measurement and analysis tasks.
The logic analyzer plays a crucial role in DDR testing by enabling detailed analysis of digital signals. It helps in debugging functional issues, identifying protocol violations, and analyzing system-level timing. When used alongside memory analysis software, the logic analyzer provides insights into DDR/LPDDR protocol compliance, aiding in efficient troubleshooting and validation.
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