Agilent Technologies FS2331 user manual

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Once Eye Finder is running at an acceptable rate you will be able to evaluate the data valid window positions and sizes. Below is a typical display:

Several things can be inferred from inspection of the Eye Finder results:

∙You will often see two complete data valid windows, one on each side of the analyzer clock. This is because the DDR transfers are occurring fast enough that two transfer cycles occur in the sample position adjustment range of the analyzer.

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Contents DDR Sdram Analysis Probe FS2331 RevisionHow to reach us Product Warranty Signal Connections For Technical Support For Sales and Marketing SupportExclusive Remedies Product WarrantyLimitation of warranty Definitions Probe Cable, Connector NumberingIntroduction Logic Analyzer ModulesFS2331 100 pin Connector to Pod Diagram Probe Components Probe Feature SummaryFS2331 Probe Description State Clock Generation DDR CommandsProbe Design DDR DataPage Probe Pod Assignment Pod Clock Domain Clock RateOn closed Switch # Default factory Function PositionProbe Switch Settings Connecting Power to the FS2331 Probe Logic Analyzer Signal Threshold Voltage SettingsConnecting the Probe to the Logic Analyzer Card Requirements for PC2700 Systems Recommended Logic Analyzer Card Requirements16753/4/5/6 Software Requirements System Software Setting up the 167xx AnalyzerSetting up the 169xx Analyzer 169xx LicensingTiming Analysis All DDR speeds and supported analyzer cards Card Configurations for State Analysis Probing multiple DDR busses Interleaved memory Connecting to your Target System Chip Select If User is dedicating aChip Select Jumper locations § Isolate the Dedicated DIMM’s pin§ Sleeve the Pin § Wire from the adjacent Dimm slot to the isolated pin Unused PodsOffline Analysis Filtering State Analysis Operation Loading the Inverse Assembler and Decoding DDR CommandsTiming Analysis Operation Taking a Trace, Triggering, and Seeing Measurement ResultsInverse Assembler and Decoding DDR Commands Tracing the Serial Presence Detect Signals Using Eye Finder with the FS2331 DDR Probe Using EyeScan with the FS2331 Probe Using the FS2331 DDR Probe with an Interposer FS1024/25 Dimm Signal Loading OptionFS2331 Calibration Page Set Command sample position Page Page Write Burst Data Valid Position Page Page Page Read Burst Data Valid Position Page Page Page Adjust the delay line value to maximize R/W overlap Set the final analyzer sample positionPage General Information Standards supportedSignal Connections J1 Data SamtecSA0 J2 Data and Command CB4Spare J3 Command and Data Buffcmdclk J4 Data DM5DQS14DQS7