User manual TEKTRONIX DDR MEMORY BUS ELECTRICAL VALIDATION AND ANALYSIS SOFTWARE DATASHEET

[. . . ] DDR Memory Bus Electrical Validation and Analysis Software Applications DDR1 DDR2 DDR3 GDDR3 LPDDR LPDDR2 Option DDRA accelerates the analysis, validation, and JEDEC conformance testing of memory systems based on DDR1, DDR2, DDR3, and DDR derivative technologies like LPDDR, LPDDR2, and GDDR3. Option DDRA supports the common data rates plus custom data rates up to and beyond 2133 MT/s. Whether you are doing intensive signal integrity analysis or debugging a specific memory transaction, DDRA will speed your ability to trigger on and identify read and write bursts in the acquired data record and then perform parametric measurements on the signals of interest. Features & Benefits Auto-configuration Wizard Guides Easy Setup and Test Configuration Analyze All Read/Write Bursts in the Entire Acquisition Plot DQS and DQ Eye Diagrams for Reads and Writes Perform JEDEC Conformance Tests with Pass/Fail Limits Use Chip Select to Qualify Multi-rank Measurements Navigate and Time Stamp Reads and Writes in an Acquired Record using Search and Mark Use Pinpoint Triggering and DPX to Quickly Identify Infrequent Anomalies Easily Move between Conformance-test and Analysis/Debug Tools Automatically Produce Consolidated Reports with Pass/Fail Information, Statistical Measurement Results, and Test-setup Information On MSO70000, Use Address/Command Bus to Precisely Qualify Read and Write Bursts or Other Events DDRA Wizard for Easy Test Selection and Configuration The wizard consolidates Tektronix experience and expertise in DDR testing into a simple, easy-to-follow test selection interface. [. . . ] Pinpoint® triggering allows you to trigger on reads or writes so that all write bursts can be shown. Once you have set the hardware triggering on a read or write condition, you can use DPX®, the industry's highest waveform acquisition rate for signal integrity testing and to determine specific DDR read/write signal characteristics. DPX® enables quick identification of infrequent events by using a color-graded display to see both frequent and infrequent waveform events, such as areas where there is bus contention, reflections, or system timing issues. Comprehensive Measurements for JEDEC Conformance Testing Option DDRA adds a long list of JEDEC-specific measurements to the rich toolset of generic jitter, timing, and signal-quality measurements already present in DPOJET. In addition to the measurements shown below (for DDR2 in this example), Option DDRA also performs de-rating of Setup and Hold pass/fail limits based on the result of slew rate measurements, as stipulated by JEDEC in the test specs for DDR2 and DDR3 (JESD79-3D, JESD79-2E as of this writing). JEDEC Measurements Supported for DDR2 tCK (avg) tCK (abs) tCH (avg) tCH (abs) tCL (avg) tCL (abs) tHP tJIT (duty) tJIT (per) tJIT (cc) tERR (02) tERR (03) tERR (04) tERR (05) tERR (6 - 10 per) tERR (11 - 50 per) tDQSH tDQSL tDS - diff (base) tDS - SE (base) tDS - diff - DERATED tDS - SE - DERATED tDH - diff (base) tDH - SE (base) tDH - diff - DERATED tDH - SE - DERATED tDIPW tAC - diff tDQSCK - diff tDQSCK - SE tDQSQ - diff tDQSQ - SE tQH tDQSS tDSS tDSH tIPW tIS (base) tIH (base) tIS - DERATED tIH - DERATED Vid - diff (AC) Vix (AC) - DQS Vix (AC) - CLK Vox (AC) - DQS Vox (AC) - CLK InputSlew - Rise (DQS) InputSlew - Fall (DQS) InputSlew - Rise (CLK) InputSlew - Fall (CLK) AC - Overshoot Amplitude - diff AC - Undershoot Amplitude - diff AC - Overshoot Amplitude - SE AC - Undershoot Amplitude - SE Data Eye Width Additional Capabilities using a Performance MSO (Mixed-Signal Oscilloscope) The MSO70000 Series Performance MSOs allow you to probe more signals on the DDR bus and to trigger on and view specific bus events. Up to 16 digital channels can be used to view logic states of command and address signals such as RAS, CAS, WE, CE, CS, etc. Signal integrity of these 16 inputs can be analyzed using the iCaptureTM multiplexing feature, which allows any of the digital input signals to be internally routed to one of the scope's four analog channels. Events such as initialization, power state changes, and command-bus cycle timing can also be analyzed using the bus-decoding features of the MSO. Full Bus Analysis using Logic Analyzer and Oscilloscope When full protocol analysis or probing of the entire memory bus is required, a logic analyzer can provide this additional capability. The TLA7000 Series logic analyzers can also be linked with Tektronix oscilloscopes to provide an integrated test setup using tools such as iCapture mentioned above. This eliminates the need for double probing and allows full analog capture of any signals probed by the logic analyzer. In addition, the iViewTM display interface allows transfer of the oscilloscope data to the logic analyzer display, so that data from both instruments are analyzed and time-aligned on one display screen. 2 www. tektronix. com DDR Memory Bus Electrical Validation and Analysis Software Characteristics Bandwidth Recommendations for Each DDR Standard DDR Type Maximum Data Rate Clock Rate 5th Harmonic of Clock Max SE Slew Rate (JEDEC) Typical Signal Swing Oscilloscope Rise Time 10% - 90%*1 Recommended Oscilloscope BW*2 DDR DDR2 DDR3 400 MT/s 800 MT/s 1600 MT/s 200 MHz 400 MHz 800 MHz 1 GHz 2 GHz 4 GHz 5 V/ns 5 V/ns 5 V/ns 1. 8 V 1. 25 V 1. 0 V 89 ps 62 ps 49 ps 4 GHz 6 GHz 8 GHz *1 For 3% maximum error on rise-time measurement. *2 For less stringent applications, a one-step reduction in scope bandwidth may be acceptable. Ordering Information DDRA DDR Memory Bus Electrical Validation and Analysis Oscilloscope Software. To order a floating license for an existing DPO7000, DPO70000B, DSA70000B, or MSO70000 use the orders listed below: Order Description To order on a new DPO7000, DPO70000B, DSA70000B*3, or MSO70000: Order Description DPOFL-DDRA DPOFL-ASM DPOFL-DJA DDR Memory Technology Analysis Package ­ Floating License Advanced Event Search and Mark ­ Floating License DPOJET Jitter and Eye Diagram Analysis ­ Floating License Opt. DDRA DPOFL-DDRA Preinstall on a new DPO7000, DPO70000, DSA70000, or MSO70000 Series oscilloscope*4 DDR Memory Technology Analysis Package ­ Floating License Recommended Accessories Order Description *3 Note: Opt. DJA (DPOJET) are required. To upgrade an existing DPO7000, DPO70000, DSA70000, or MSO70000 order the appropriate model number and option listed below. For example, DPO7UP DDRA. DPO7000 DPO70000B DSA70000B MSO70000 P7500 Series 020-2955-xx 020-3022-xx 020-2954-xx P6780 TriModeTM Differential Probe Micro-coax Tips (TriMode) for P7500 probes Micro-coax Tips (TriMode) for P7500 probes*5 Socket Cable for P7500 probes Differential Logic Probe for MSO70000 Recommended Nexus Technology Accessories DPO7UP DDRA ASM DJAM DJAH DJAU DJUP DPO7UP DPO7UP DPO-UP Upgrade options for DPO7000, DPO70000B, DSA70000B, MSO70000 Upgrade to option DDRA (requires options ASM and DJA) Upgrade DPO70000B and MSO70000 with Advanced Event Search and Mark (Opt. [. . . ] Tektronix maintains a comprehensive, constantly expanding collection of application notes, technical briefs and other resources to help engineers working on the cutting edge of technology. Information in this publication supersedes that in all previously published material. All other trade names referenced are the service marks, trademarks, or registered trademarks of their respective companies. [. . . ]