Tektronix DDR Analysis Application Help User manual

DDR Analysis Memory Interface Electrical Verification and Debug Solution

Printable Application Help

*P077023118*

077-0231-18

DDR Analysis Memory Interface Electrical Verification and Debug Solution

Printable Application Help

077-0231-18

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Specifications and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc.

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P.O. Box 500

Beaverton, OR 97077

USA

For product information, sales, service, and technical support:

• In North America, call 1-800-833-9200.

• Worldwide, visit www.tek.com to find contacts in your area.

Table of Contents

Welcome......................................................................................................................................................................................xv

Introduction................................................................................................................................................................................... 1

Related documentation.......................................................................................................................................................... 1

Conventions........................................................................................................................................................................... 1

Technical support................................................................................................................................................................... 1

Customer feedback................................................................................................................................................................1

Getting started...............................................................................................................................................................................3

DDRA prerequisites............................................................................................................................................................... 3

Requirements and restrictions............................................................................................................................................... 3

Supported probes.................................................................................................................................................................. 3

Installing the application.........................................................................................................................................................3

Version information................................................................................................................................................................ 4

Tutorial.......................................................................................................................................................................................... 5

Introduction to the tutorial...................................................................................................................................................... 5

Setting up the oscilloscope.................................................................................................................................................... 5

Starting the application.......................................................................................................................................................... 5

Waveform files....................................................................................................................................................................... 5

Recalling a waveform file....................................................................................................................................................... 5

Taking a measurement...........................................................................................................................................................6

Operating basics........................................................................................................................................................................... 9

About basic operations.......................................................................................................................................................... 9

DDRA user interface.......................................................................................................................................................9

Basic oscilloscope functions.................................................................................................................................................. 9

Application directories.....................................................................................................................................................9

File name extensions......................................................................................................................................................9

Returning to the application.......................................................................................................................................... 10

Control panel................................................................................................................................................................ 10

Saving and recalling setups................................................................................................................................................. 11

Saving a setup.............................................................................................................................................................. 11

Recalling a saved setup................................................................................................................................................11

Recalling the default setup............................................................................................................................................11

Search and mark..................................................................................................................................................................11

Limits....................................................................................................................................................................................12

Dynamic limits......................................................................................................................................................................13

Setting up DDR for analysis.................................................................................................................................................14

About DDR analysis......................................................................................................................................................14

Step 1: Generation rate and levels............................................................................................................................... 15

Step 2: Interposer filter................................................................................................................................................. 17

Step3: Measurements and sources.............................................................................................................................. 19

Step 4: Burst detection method.................................................................................................................................... 34

Step 5: Burst detection settings.................................................................................................................................... 40

Step 6: Thresholds and scaling.................................................................................................................................... 47

Results..........................................................................................................................................................................51

Plots..............................................................................................................................................................................51

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help v

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Reports......................................................................................................................................................................... 52

Switching between the DDRA and DPOJET applications.............................................................................................53

Salient features of MSO-DDRA integration...................................................................................................................54

Hints.....................................................................................................................................................................................54

Derating............................................................................................................................................................................... 55

Measurements............................................................................................................................................................................ 59

Measurement sources......................................................................................................................................................... 59

DDR measurement sources..........................................................................................................................................59

DDR2 measurement sources........................................................................................................................................61

DDR3/DDR3L measurement sources...........................................................................................................................65

DDR4 measurement sources........................................................................................................................................70

GDDR3 measurement sources.....................................................................................................................................74

GDDR5 measurement sources.....................................................................................................................................75

LPDDR measurement sources..................................................................................................................................... 78

LPDDR2 measurement sources................................................................................................................................... 80

LPDDR3 measurement sources................................................................................................................................... 85

LPDDR4/LPDDR4X measurement sources..................................................................................................................89

Measurement range limits....................................................................................................................................................92

Dynamic limits for each generation......................................................................................................................................94

Dynamic limits for DDR measurements........................................................................................................................94

Dynamic limits for DDR2 measurements......................................................................................................................95

Dynamic limits for DDR3 measurements......................................................................................................................96

Dynamic limits for DDR4 measurements......................................................................................................................97

Dynamic limits for DDR3L measurements....................................................................................................................98

Dynamic limits for LPDDR measurements..................................................................................................................100

Dynamic limits for LPDDR2 measurements................................................................................................................100

Dynamic limits for LPDDR3 measurements................................................................................................................102

Dynamic limits for LPDDR4 and LPDDR4X measurements.......................................................................................103

Derating values.................................................................................................................................................................. 105

LPDDR2 Derating values............................................................................................................................................105

DDR3 and DDR3L Derating values............................................................................................................................ 106

Vih-Vil reference levels.......................................................................................................................................................112

Using digital channels........................................................................................................................................................ 115

Error codes and warnings.................................................................................................................................................. 120

Configuration parameters..........................................................................................................................................................126

About parameters.............................................................................................................................................................. 126

Step 1: Generation rate and levels parameters................................................................................................................. 126

Step 2: Interposer filter parameters................................................................................................................................... 127

Step 3: Measurement and sources parameters.................................................................................................................127

Step 4: Burst detection method parameters...................................................................................................................... 128

Step 5: Burst detection settings parameters...................................................................................................................... 128

Step 6: Thresholds and scaling parameters...................................................................................................................... 130

Algorithms................................................................................................................................................................................. 131

About algorithms................................................................................................................................................................ 131

tDS(base)DQS(Informative)...............................................................................................................................................131

tDH(base)DQS(Informative)...............................................................................................................................................132

tDH(derated)DQS(Informative).......................................................................................................................................... 132

tDS-Diff(base).................................................................................................................................................................... 132

tDH-Diff(base).................................................................................................................................................................... 133

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tIH(base)............................................................................................................................................................................ 133

tIS(base)............................................................................................................................................................................ 133

tIH(base)CA....................................................................................................................................................................... 134

tIH(base)CS....................................................................................................................................................................... 134

tIS(base)CA....................................................................................................................................................................... 134

tIS(base)CS....................................................................................................................................................................... 134

tIS(Vref) / tIS(Vref-based)...................................................................................................................................................134

tIH(Vref) / tIH(Vref-based)..................................................................................................................................................134

tDH-Diff(Vref-based).......................................................................................................................................................... 135

tDS-Diff(derated)................................................................................................................................................................135

tDS-Diff(Vref-based)...........................................................................................................................................................135

tDS(DQS)(Informative).......................................................................................................................................................136

tDH(DQS)(Informative)...................................................................................................................................................... 136

tDH-Diff(max-derated)(Informative)....................................................................................................................................136

tDS-Diff(max-derated)(Informative)....................................................................................................................................136

tDH-Diff(min-derated)(Informative).....................................................................................................................................136

tDS-Diff(min-derated)(Informative).....................................................................................................................................136

tIS(derated)CA................................................................................................................................................................... 136

tIH(derated)........................................................................................................................................................................136

tIS(derated)........................................................................................................................................................................ 136

tIH(derated)CA...................................................................................................................................................................137

tIS(derated)CS................................................................................................................................................................... 137

tIH(derated)CS...................................................................................................................................................................137

tIH(max-derated)(Informative)............................................................................................................................................137

tIS(max-derated)(Informative)............................................................................................................................................137

tIS(min-derated)(Informative).............................................................................................................................................137

tDS(derated)DQS(Informative).......................................................................................................................................... 137

tIH(min-derated)(Informative).............................................................................................................................................137

tCMDS............................................................................................................................................................................... 137

tCMDH............................................................................................................................................................................... 137

tAS..................................................................................................................................................................................... 138

tAH..................................................................................................................................................................................... 138

tCL(avg)............................................................................................................................................................................. 138

tCK(avg).............................................................................................................................................................................138

tCH(avg).............................................................................................................................................................................138

tJIT(duty)............................................................................................................................................................................139

tJIT(per)............................................................................................................................................................................. 139

tCK(abs) / tCK....................................................................................................................................................................139

tCL(abs) / tCL.....................................................................................................................................................................139

tWCKL................................................................................................................................................................................139

tWCKH............................................................................................................................................................................... 140

tERR (n per).......................................................................................................................................................................140

tERR (m-n per)...................................................................................................................................................................140

tJIT(cc)............................................................................................................................................................................... 140

tHP..................................................................................................................................................................................... 140

tDH-Diff(derated)................................................................................................................................................................141

Rise Slew Rate Measurements..........................................................................................................................................141

srr1..............................................................................................................................................................................141

srr2..............................................................................................................................................................................142

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SRCA_Rise.................................................................................................................................................................142

SRIN_cIVW_Rise........................................................................................................................................................142

SRIN_dIVW_Rise....................................................................................................................................................... 142

SRQse-Rise(DQ)........................................................................................................................................................ 142

SRQdiff-Rise(DQS).....................................................................................................................................................142

InputSlew-Diff-Rise(CK)..............................................................................................................................................142

Slew Rate-Setup-Rise(DQ).........................................................................................................................................142

Slew Rate-Hold-Rise(DQ)...........................................................................................................................................142

Slew Rate-Hold-Rise(Addr/Cmd)................................................................................................................................142

Slew Rate-Setup-Rise(Addr/Cmd)..............................................................................................................................142

InputSlew-Diff-Rise(DQS)...........................................................................................................................................142

Slew Rate-Setup-SE-Rise(DQS)................................................................................................................................ 142

Slew Rate-Hold-SE-Rise(DQS).................................................................................................................................. 143

CKSlew-Rise(CK) / CKSlew-Rise(CK#)......................................................................................................................143

WCKSlew-Rise(WCK) / WCKSlew-Rise(WCK#)........................................................................................................ 143

tWCK-Rise-Slew......................................................................................................................................................... 143

Fall Slew Rate Measurements........................................................................................................................................... 143

srf1..............................................................................................................................................................................143

srf2..............................................................................................................................................................................144

SRCA_Fall.................................................................................................................................................................. 144

SRIN_cIVW_Fall.........................................................................................................................................................144

SRIN_dIVW_Fall.........................................................................................................................................................144

SRQse-Fall(DQ)..........................................................................................................................................................144

SRQdiff-Fall(DQS)...................................................................................................................................................... 144

InputSlew-Diff-Fall(CK)............................................................................................................................................... 144

Slew Rate-Setup-Fall(DQ).......................................................................................................................................... 144

Slew Rate-Hold-Fall(DQ)............................................................................................................................................ 144

Slew Rate-Setup-Fall(Addr/Cmd)............................................................................................................................... 144

Slew Rate-Hold-Fall(Addr/Cmd)................................................................................................................................. 144

InputSlew-Diff-Fall(DQS)............................................................................................................................................ 144

Slew Rate-Setup-SE-Fall(DQS)..................................................................................................................................144

Slew Rate-Hold-SE-Fall(DQS)....................................................................................................................................145

CKSlew-Fall(CK) / CKSlew-Fall(CK#).........................................................................................................................145

WCKSlew-Fall(WCK) / WCKSlew-Fall(WCK#)...........................................................................................................145

tWCK-Fall-Slew...........................................................................................................................................................145

tDQS2DQ...........................................................................................................................................................................145

tDQSH................................................................................................................................................................................145

tDQSL................................................................................................................................................................................ 146

TdIPW-Low / tDIPW-Low................................................................................................................................................... 146

TdIPW-High / tDIPW-High..................................................................................................................................................146

TCIPW-High / tIPW-High....................................................................................................................................................146

TCIPW-Low / tIPW-Low..................................................................................................................................................... 146

tIPW-High(CA)................................................................................................................................................................... 146

tIPW-High(CS)................................................................................................................................................................... 146

tIPW-Low(CA).................................................................................................................................................................... 146

tIPW-Low(CS).................................................................................................................................................................... 147

tAPW..................................................................................................................................................................................147

tWCK..................................................................................................................................................................................147

tCMDPW............................................................................................................................................................................ 147

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tWCKHP.............................................................................................................................................................................147

Data Eye Width.................................................................................................................................................................. 147

Clock Eye Width (Informative)........................................................................................................................................... 147

AddrCmd Eye Width (Informative)..................................................................................................................................... 147

Data Eye Height.................................................................................................................................................................147

Clock Eye Height (Informative).......................................................................................................................................... 148

DDRARXMask................................................................................................................................................................... 148

AutoFitRxMask (Informative)............................................................................................................................................. 149

Overshoot Measurement................................................................................................................................................... 149

AC-Overshoot(DQS)...................................................................................................................................................149

AC-Overshoot(DQS#).................................................................................................................................................149

AC-Overshoot(CK)......................................................................................................................................................150

AC-Overshoot(CK#)....................................................................................................................................................150

AC-Overshoot(DQ)..................................................................................................................................................... 150

AC-Overshoot............................................................................................................................................................. 150

Undershoot Measurements................................................................................................................................................150

AC-Undershoot(DQS).................................................................................................................................................150

AC-Undershoot(DQS#)...............................................................................................................................................150

AC-Undershoot(CK)....................................................................................................................................................150

AC-Undershoot(CK#)..................................................................................................................................................150

AC-Undershoot(DQ)................................................................................................................................................... 150

AC-Undershoot........................................................................................................................................................... 150

AbsMax Undershoot Measurements..................................................................................................................................150

AC-Undershoot(AbsMax)(DQS)..................................................................................................................................151

AC-UndershootArea(AbsMax)(DQS#)........................................................................................................................151

AC-Undershoot(AbsMax) (DQ)...................................................................................................................................151

AbsMax Overshoot Measurements....................................................................................................................................151

AC-Overshoot(AbsMax)(DQS)....................................................................................................................................151

AC-Overshoot(AbsMax)(DQS#)..................................................................................................................................151

AC-Overshoot(AbsMax)(CK)...................................................................................................................................... 151

AC-Overshoot(AbsMax)(CK#).................................................................................................................................... 151

AC-Overshoot(AbsMax)(DQ)......................................................................................................................................151

AC-Overshoot(AbsMax)..............................................................................................................................................151

Overshoot Area Measurements......................................................................................................................................... 151

AC-Overshoot(DQS)...................................................................................................................................................153

AC-OvershootArea(DQS#)......................................................................................................................................... 153

AC-Overshoot(CK)......................................................................................................................................................153

AC-OvershootArea(CK#)............................................................................................................................................ 153

AC-OvershootArea(DQ)..............................................................................................................................................153

AC-OvershootArea......................................................................................................................................................153

AbsMax Overshoot Area Measurements........................................................................................................................... 153

AC-OvershootArea(AbsMax)(DQS)............................................................................................................................154

AC-OvershootArea(AbsMax)(DQS#)..........................................................................................................................154

AC-OvershootArea(AbsMax)(CK)...............................................................................................................................154

AC-OvershootArea(AbsMax)(CK#).............................................................................................................................154

AC-OvershootArea(AbsMax)(DQ).............................................................................................................................. 154

AC-OvershootArea(AbsMax)...................................................................................................................................... 154

Undershoot Area Measurements....................................................................................................................................... 154

AC-UndershootArea(DQS)......................................................................................................................................... 156

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AC-UndershootArea(DQS#)....................................................................................................................................... 156

AC-UndershootArea(CK)............................................................................................................................................ 156

AC-UndershootArea(CK#).......................................................................................................................................... 156

AC-UndershootArea(DQ)............................................................................................................................................156

AC-UndershootArea....................................................................................................................................................156

AbsMax Undershoot Area Measurements......................................................................................................................... 156

AC-UndershootArea(AbsMax)(DQS#)........................................................................................................................156

AC-UndershootArea(AbsMax)(DQ)............................................................................................................................ 156

tWPRE............................................................................................................................................................................... 156

tWPST................................................................................................................................................................................157

tRPST................................................................................................................................................................................ 158

tRPRE................................................................................................................................................................................ 158

tDQSQ-Diff.........................................................................................................................................................................159

tDQSQ-DBI........................................................................................................................................................................ 159

tDQSQ(DQS) / tDQSQ(DQS)(Informative)........................................................................................................................ 159

tDQSCK-Diff.......................................................................................................................................................................159

tDQSCK............................................................................................................................................................................. 160

tDQSS-Diff......................................................................................................................................................................... 161

tDQSS(DQS)(Informative)................................................................................................................................................. 161

tDQSS................................................................................................................................................................................161

tHZ(DQ)............................................................................................................................................................................. 162

tHZ(DQS)........................................................................................................................................................................... 162

tLZ(DQS)............................................................................................................................................................................163

tLZ(DQ).............................................................................................................................................................................. 163

VID(ac)...............................................................................................................................................................................163

Vix(ac)CK...........................................................................................................................................................................164

Vix(ac)DQS........................................................................................................................................................................ 164

Vix(ac)DQS(Informative)....................................................................................................................................................165

Vix(ac)WCK........................................................................................................................................................................165

VIXDQ................................................................................................................................................................................165

VIXCA................................................................................................................................................................................ 165

Vox(ac)DQS.......................................................................................................................................................................165

Vox(ac)CK..........................................................................................................................................................................165

tDSS-Diff............................................................................................................................................................................ 165

tDSH-Diff............................................................................................................................................................................165

tDSS(DQS)(Informative).................................................................................................................................................... 166

tDSH(DQS)(Informative).................................................................................................................................................... 166

tVAC(DQ)...........................................................................................................................................................................166

tVAC(Addr/Cmd)................................................................................................................................................................ 166

tDVAC(DQS) / tDVAC(DQS)(Informative)..........................................................................................................................167

tQH.....................................................................................................................................................................................167

tQH_DBI.............................................................................................................................................................................167

tAC-Diff...............................................................................................................................................................................167

tQW-Total........................................................................................................................................................................... 168

tQW-Total_DBI................................................................................................................................................................... 168

VIHL_AC............................................................................................................................................................................ 168

VIHL_AC(CA).....................................................................................................................................................................168

VSEH(DQS) / VSEH(DQS)(Informative)............................................................................................................................169

VSEH(DQS#) / VSEH(DQS#)(Informative)........................................................................................................................169

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VSEH(CK) / VSEH(CK)(Informative) / VSEH(AC)CK........................................................................................................ 169

VSEH(CK#) / VSEH(CK#)(Informative) / VSEH(AC)CK#.................................................................................................. 169

VSEH(AC)DQS / VSEH(AC)DQS(Informative)..................................................................................................................169

VSEH(AC)DQS# / VSEH(AC)DQS#(Informative)..............................................................................................................169

VSEL(DQS) / VSEL(DQS)(Informative)............................................................................................................................. 169

VSEL(CK) / VSEL(CK)(Informative) / VSEL(AC)CK.......................................................................................................... 170

VSEL(CK#) / VSEL(CK#)(Informative) / VSEL(AC)CK#.................................................................................................... 170

VSEL(AC)DQS / VSEL(AC)DQS(Informative)................................................................................................................... 170

VSEL(DQS#) / VSEL(DQS#)(Informative)......................................................................................................................... 170

tQSH.................................................................................................................................................................................. 170

tQSL...................................................................................................................................................................................170

tQSH_DBI.......................................................................................................................................................................... 170

tQSL_DBI...........................................................................................................................................................................171

VSWING(MAX)DQS.......................................................................................................................................................... 171

VSWING(MAX)DQS#........................................................................................................................................................ 171

VSWING(MAX)CK............................................................................................................................................................. 171

VSWING(MAX)CK#........................................................................................................................................................... 171

VIN(CK)..............................................................................................................................................................................171

VIN(CK#)............................................................................................................................................................................171

VIN(WCK).......................................................................................................................................................................... 171

VOL(WCK#)....................................................................................................................................................................... 171

VOHdiff(AC)....................................................................................................................................................................... 171

VOLdiff(AC)........................................................................................................................................................................171

VILdiff(AC)..........................................................................................................................................................................172

VIHdiff(AC).........................................................................................................................................................................172

VOH(AC)DQ...................................................................................................................................................................... 172

VOH(AC)DQS.................................................................................................................................................................... 172

VOH(AC)DQS#.................................................................................................................................................................. 172

VOL(AC)DQ....................................................................................................................................................................... 172

VOL(AC)DQS.....................................................................................................................................................................172

VOL(AC)DQS#...................................................................................................................................................................172

VOH(DC)DQ...................................................................................................................................................................... 172

VOH(DC)DQS....................................................................................................................................................................173

VOH(DC)DQS#..................................................................................................................................................................173

VOL(DC)DQ.......................................................................................................................................................................173

VOL(DC)DQS.................................................................................................................................................................... 173

VOL(DC)DQS#.................................................................................................................................................................. 173

VOH(WCK)........................................................................................................................................................................ 173

VOH(WCK#)...................................................................................................................................................................... 173

VOL(WCK)......................................................................................................................................................................... 173

VOL(WCK#)....................................................................................................................................................................... 173

SSC Mod Freq(CK)............................................................................................................................................................173

SSC Mod Freq(WCK)........................................................................................................................................................ 174

SSC Downspread(CK)....................................................................................................................................................... 174

SSC Downspread(WCK)....................................................................................................................................................174

SSC Profile(CK)................................................................................................................................................................. 174

SSC Profile(WCK)..............................................................................................................................................................174

Digital Measurements (Command to Command)...............................................................................................................174

tRFC........................................................................................................................................................................... 174

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help xi

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tREFTR(Read)............................................................................................................................................................175

tREFTR(Write)............................................................................................................................................................ 175

tXSNRW......................................................................................................................................................................175

tPD..............................................................................................................................................................................175

tRC..............................................................................................................................................................................175

tRAS........................................................................................................................................................................... 175

tRCDRD......................................................................................................................................................................175

tRCDWR..................................................................................................................................................................... 175

tRTPL / tRTP...............................................................................................................................................................175

tPPD........................................................................................................................................................................... 175

tRP(REF).................................................................................................................................................................... 175

tRP(SRE).................................................................................................................................................................... 175

tRP(MRS)....................................................................................................................................................................176

tRP(ACT) / tRP........................................................................................................................................................... 176

tCKESR...................................................................................................................................................................... 176

tXSRRD...................................................................................................................................................................... 176

tXSRWR......................................................................................................................................................................176

tCCDRD......................................................................................................................................................................176

tCCDWR..................................................................................................................................................................... 176

Digital Measurements (Burst to Command).......................................................................................................................176

tWRSRE......................................................................................................................................................................176

tWRPDE......................................................................................................................................................................177

tRDSRE...................................................................................................................................................................... 177

tRDPDE...................................................................................................................................................................... 177

Digital Measurements (Others).......................................................................................................................................... 177

tCKSRE...................................................................................................................................................................... 177

tCKSRX...................................................................................................................................................................... 177

tWCK-TJ............................................................................................................................................................................ 177

tWCK-RJ............................................................................................................................................................................ 177

VWCK-SWING...................................................................................................................................................................177

tCH(abs)/ tCH.................................................................................................................................................................... 178

tDVAC(WCK)......................................................................................................................................................................178

Programmer Manual................................................................................................................................................................. 179

About the GPIB program....................................................................................................................................................179

GPIB reference materials...................................................................................................................................................179

Argument types..................................................................................................................................................................179

General commands............................................................................................................................................................179

DDRA:GENERATEReport (No Query Form).............................................................................................................. 179

DDRA:APPENDReport............................................................................................................................................... 180

DDRA:ACTIVATE (No Query Form)........................................................................................................................... 180

DDRA:VERsion? (Query Only)................................................................................................................................... 180

Measurement and Sources commands............................................................................................................................. 181

DDRA:INFORMAtivemeas..........................................................................................................................................181

DDRA:ISOLBurstlen................................................................................................................................................... 181

DDRA:BACKTOBAckburst..........................................................................................................................................182

DDRA:MEASType.......................................................................................................................................................182

DDRA:ADDMeas (No Query Form)............................................................................................................................ 183

DDRA:ADDMEASGroup (No Query Form).................................................................................................................193

DDRA:CLEARMeas (No Query Form)........................................................................................................................193

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DDRA:SOURCE? (Query Only)..................................................................................................................................194

DDRA:SOURCE:ADDRcmd....................................................................................................................................... 194

DDRA:SOURCE:CLOCK............................................................................................................................................194

DDRA:SOURCE:CLOCKBar...................................................................................................................................... 195

DDRA:SOURCE:DATa................................................................................................................................................195

DDRA:SOURCE:STROBE..........................................................................................................................................195

DDRA:SOURCE:STROBEBar....................................................................................................................................196

DDRA:SOURCE:WCK................................................................................................................................................196

DDRA:SOURCE:WCKBar.......................................................................................................................................... 197

DDRA:TCKAVG.......................................................................................................................................................... 197

DDRA:TIMINGMode................................................................................................................................................... 197

DDRA:RXMASKFile....................................................................................................................................................198

DDRA:MASKMARGIN................................................................................................................................................ 198

DDRA:MASKMARGINTIME........................................................................................................................................198

DDRA:MASKMARGINVOLTAGE................................................................................................................................199

DDRA:DATAMASKPLACEMENT............................................................................................................................... 199

DDRA:MEASGrouping................................................................................................................................................200

DDRA:RESULTJEDECunit......................................................................................................................................... 200

DDRA:SPECREVISION..............................................................................................................................................200

DDRA:VDQSMID........................................................................................................................................................201

Burst Detection Method commands...................................................................................................................................201

DDRA:BURSTDETectmethod..................................................................................................................................... 201

DDRA:TDQS2DQMode.............................................................................................................................................. 202

DDRA:TDQS2DQ....................................................................................................................................................... 202

DDRA:BURSTIDMethod.............................................................................................................................................203

DDRA:ISOLBurstlen................................................................................................................................................... 203

DDRA:BURSTMatch...................................................................................................................................................204

DDRA:BURSTPK2Pk..................................................................................................................................................204

DDRA:AMPBasedmargin............................................................................................................................................204

DDRA:WRITEAmpgtread............................................................................................................................................205

DDRA:PREAmbletype................................................................................................................................................ 205

DDRA:READPOSTamble............................................................................................................................................206

DDRA:WRITEPOSTamble.......................................................................................................................................... 206

DDRA:APPLYBurstconfig (No Query Form)............................................................................................................... 207

DDRA:DDR4:READPREAMBLELENGTH..................................................................................................................207

DDRA:DDR4:WRITEPREAMBLELENGTH................................................................................................................ 207

DDRA:DDR4:APPLYBURSTCONFIG........................................................................................................................ 208

Burst Detection Settings commands..................................................................................................................................208

DDRA:BURSTLevelmode...........................................................................................................................................208

DDRA:DQDQSLEVELSTAtus? (Query Only)............................................................................................................. 209

DDRA:STROBEHIGH.................................................................................................................................................209

DDRA:STROBEMID................................................................................................................................................... 209

DDRA:STROBELOW..................................................................................................................................................210

DDRA:DATAHIGH.......................................................................................................................................................210

DDRA:DATAMID......................................................................................................................................................... 210

DDRA:DATALOW........................................................................................................................................................211

DDRA:ADVBURSTLevelmode....................................................................................................................................211

DDRA:HYSTEREsis....................................................................................................................................................211

DDRA:MARGIN.......................................................................................................................................................... 212

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DDRA:CSSOUrce.......................................................................................................................................................212

DDRA:CASMIN...........................................................................................................................................................213

DDRA:CASMAX..........................................................................................................................................................213

DDRA:CSMOde..........................................................................................................................................................213

DDRA:CSLEvel...........................................................................................................................................................214

DDRA:CSACTive........................................................................................................................................................214

DDRA:BUS................................................................................................................................................................. 215

DDRA:SYMBOLFile....................................................................................................................................................215

DDRA:LOGICTrigger.................................................................................................................................................. 216

DDRA:BURSTLAtency................................................................................................................................................216

DDRA:BURSTTOlerance............................................................................................................................................216

DDRA:BURSTLEngth................................................................................................................................................. 217

Threshold and Scaling commands.....................................................................................................................................217

DDRA:MEASTHRESholdmode...................................................................................................................................217

DDRA:ALTernatethresholds........................................................................................................................................218

DDRA:HORIzontalscaling...........................................................................................................................................218

DDRA:VERTicalscaling...............................................................................................................................................219

Interposer Filter commands............................................................................................................................................... 219

DDRA:FLTtype............................................................................................................................................................219

DDRA:FILTERFile.......................................................................................................................................................219

DDRA:CLEARFILTERfile (No Query Form)................................................................................................................220

Generation Rate and Levels commands............................................................................................................................220

DDRA:GENeration......................................................................................................................................................220

DDRA:DATARate........................................................................................................................................................ 221

DDRA:CUSTOMRate..................................................................................................................................................221

DDRA:VDDMode........................................................................................................................................................ 222

DDRA:VDD................................................................................................................................................................. 222

DDRA:VREFMode...................................................................................................................................................... 222

DDRA:VREF............................................................................................................................................................... 223

DDRA:VREFDC? (Query Only).................................................................................................................................. 223

DDRA:VIHACMin? (Query Only)................................................................................................................................ 223

DDRA:VIHDCMin? (Query Only)................................................................................................................................ 224

DDRA:VILACMax? (Query Only)................................................................................................................................224

DDRA:VILDCMax? (Query Only)................................................................................................................................224

DDRA:VCENTDQ....................................................................................................................................................... 225

DDRA:VCENTCA........................................................................................................................................................225

DDRA:VOH.................................................................................................................................................................226

DDRA:VDDQ.............................................................................................................................................................. 226

DDRA:TDIvw? (Query Only).......................................................................................................................................226

DDRA:VDIvw? (Query Only).......................................................................................................................................227

Index......................................................................................................................................................................................... 228

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help xiv

Welcome

DDR (Dual Data Rate) is a dominant and fast-growing memory technology. It offers the high data transfer rates needed for virtually all computing applications, from consumer products to the most powerful servers. The high speeds of these signals require high performance measurement tools.

The DDRA application includes compliance measurements as part of the Tektronix DDR Analysis solution. The DDR Analysis solution enables you to achieve new levels of productivity, efficiency, and measurement reliability. It requires the Jitter and Eye Diagram Analysis tool (Opt. DJA) and the Advanced Search and Mark capability (Opt. ASM).

Some of the DDRA features are:

• Provides debug, analysis, and compliance in one solution for multiple DDR standards such as DDR, DDR2, DDR3,

• Enables analysis of compliance measurements either through the DDRA or DPOJET application for all bursts in an

• Differentiates data reads from writes or analyzes signal integrity on the clock or on a data (DQ) line during Read or Write

• Includes limit files to test measurement pass/fail status per standard, speed grades and speed bins. Supports non-

• Provides both single-ended and differential measurements on Data, Strobe, Clock, Address and Command signals.

• Includes comprehensive measurement statistics.

• Includes sophisticated graphical analysis tools such as Histograms, Time Trends, Spectrums, Bathtub Plots, and Real-

• Produces consolidated reports automatically with pass/fail information, statistical measurement results, setup

• Automatically applies signal slew rate derating of measurement limits for Address/Command and data signals.

• Dynamically normalizes limits for clock measurements such as tERR based on the measured tCK(avg).

• Logic state configuration using the DDRA user interface.

Welcome

DDR3L, DDR4, LPDDR, LPDDR2, LPDDR3, LPDDR4, LPDDR4X, GDDR3, and GDDR5.

acquisition.

cycles, or measures Data to Strobe setup and hold during Write cycles.

standard speed grades.

Time Eye® diagrams with superimposition of the strobe eye with the data eye.

information, limits information, waveform path location, plots, and user comments, if any.

DDR

DDR is the DRAM (Dynamic Random Access Memory) technology responsible for increasing data transfer rates to meet high-speed requirements and data capacity of computer systems.

DDR2

DDR2 is the Double Data Rate 2 SDRAM (Synchronous Dynamic Random Access Memory) and is widely available in products with data rates up to 1066 MT/s.

DDR3

DDR3 DRAM memory is widely available in products and extends data rates to 1600 MT/s and faster rates to come.

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help xv

Welcome

DDR3L

DDR3L (Low voltage) DRAM memory is widely available in products and extends data rates to 1600 MT/s and faster rates to come.

DDR4

DDR4 DRAM memory is widely available in products and extends data rates to 3200 MT/s and faster rates to come.

LPDDR

LPDDR (Low Power DDR) is a technology for mobile phones and portable computing devices, driven by the need for faster operation with long battery life.

LPDDR2

LPDDR2 (Low Power DDR2) is a technology for mobile phones and portable computing devices as it supports advanced power management. It includes a reduced interface voltage of 1.2 V from the 1.8 V specification as compared to LPDDR memory technology. This results in a power consumption reduced by over 50%.

LPDDR3

LPDDR3 (Low Power DDR3) is a technology for mobile phones and portable computing devices as it supports advanced power management. It includes a reduced interface voltage of 1.2 V from the 1.8 V specification as compared to LPDDR memory technology. This results in a power consumption reduced by over 50%.

LPDDR4

LPDDR4 (Low Power DDR4) is an emerging technology for mobile phones and portable computing devices as it supports advanced power management. It includes a reduced interface voltage of 1.1 V from the 1.8 V specification as compared to LPDDR memory technology.

LPDDR4X

LPDDR4X (Low Power DDR4X) is an extension to the LPDDR4 standard. It is identical to LPDDR4, except that additional power is saved by reducing the I/O voltage (Vddq) to 0.6 V rather than 1.1 V.

GDDR3

GDDR3 (Graphic DDR3) offers faster access and is used in graphics-intensive applications such as video cards and gaming systems.

GDDR5

GDDR5 (Graphic DDR5) is a type of high performance dynamic random-access graphics card memory designed for applications requiring high bandwidth.

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help xvi

Introduction

Conventions

This online help uses the following conventions:

• When steps require a sequence of selections using the application interface, the > delimiter marks each transition

• The terms DDR application and application refer to DDRA.

• The term DPOJET application or DPOJET refers to the Jitter and Eye Diagram Analysis Tool.

• The term oscilloscope refers to any product on which this application runs.

• The term DUT is an abbreviation for Device Under Test.

For details, refer to Optional Applications Software on Windows-Based Oscilloscopes Installation Manual.

between a menu and an option. For example, Analyze > DDR Analysis.

• User interface screen graphics are taken from a DPO7000 series oscilloscope.

Technical support

Tektronix welcomes your comments about products and services. Contact Tektronix through e-mail, telephone, or the Web site. Click www.tektronix.com/manuals for more information. Tektronix also welcomes your feedback. Click Customer

feedback for suggestions for providing feedback to Tektronix.

Customer feedback

Tektronix values your feedback on our products. To help us serve you better, please send us your suggestions, ideas, or other comments you may have regarding the application or oscilloscope.

Direct your feedback through e-mail to

techsupport@tektronix.com

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 1

Introduction

Or FAX at (503) 627-5695, and include the following information:

General Information

• Oscilloscope series (for example: DPO7000C or DSA/DPO/MSO70000C/D/DX series) and hardware options, if any

• Software version number

• Probes used

Application-specific Information

• Description of the problem such that technical support can duplicate the problem

• If possible, save the oscilloscope and application setup files as .set and associated .xml files.

• If possible, save the waveform on which you are performing the measurement as a .wfm file.

Once you have gathered this information, you can contact technical support by phone or through e-mail. In the subject field, please indicate DDRA Problem and attach the .set, .xml and .wfm files to your e-mail. If there is any query related to the actual measurement results, then you can generate a .mht report and send it. If you need to send very large files, technical support can assist you to transfer the files through ftp.

The following items are important, but optional:

• Your name

• Your company

• Your mailing address

• Your phone number

• Your FAX number

Enter your suggestion. Please be as specific as possible.

Please indicate if you would like to be contacted by Tektronix regarding your suggestion or comments.

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 2

Getting started

DDRA prerequisites

DDRA application requires DPOJET Advanced (Opt. DJA) and Search and Mark (Opt. ASM) to be enabled.

Requirements and restrictions

DPOJET (DJA) is required to operate DDRA on your oscilloscope. Also refer to subsequent requirements for DPOJET.

Supported probes

The application supports the following probes:

• TAP2500

• TAP1500

• TCP0030

• P6158

• P6101B

• P6246

• P6247 (DPO7254 only)

• P6248 (DPO7254 only)

• P6249

• P6150

• P6158

• P7240

• P7260

• P7330

• P7340A

• P7350

• P7360A

• P7380A

• P7313A

• P7513

• P7520A

• P7520

• P7500 Series TriMode Probes

• P7700 Series TriMode Probes

Getting started

Installing the application

Refer to the Optional Application Software on Windows-Based Oscilloscopes Installation Manual for the following information:

• Software warranty.

• List of available applications, compatible oscilloscopes, and relevant software and firmware version numbers.

• Applying a new option installation key label.

• Installing an application.

• Enabling an application.

• Downloading updates from the Tektronix Web site.

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 3

For DDRA application, install both DPOJET and DDRA after re-installing TekScope. The sequence that should be followed:

• TekScope

• DPOJET

• DDRA

Version information

To identify the installed version of the DDRA application, click Help > About DPOJET.

Getting started

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 4

Tutorial

Introduction to the tutorial

This tutorial shows how to set up the application, take measurements, and view results as plots or statistics.

Before you begin the tutorial, perform the following tasks:

• Set up the oscilloscope.

• Start the application.

• Recall the tutorial waveform.

Setting up the oscilloscope

The steps to set up the oscilloscope are:

• Click File > Recall Default Setup in the oscilloscope menu bar to recall the default settings.

• Press the individual CH1, CH2, CH3, and CH4 buttons as needed to add or remove active waveforms from the display.

Starting the application

Tutorial

On the oscilloscope menu bar, click Analyze > DDR Analysis to open the application.

Waveform files

The DDRA application provides the following waveforms at C:\Users\Public\Tektronix \TekApplications\DDRA\Waveforms\DDR2 for oscilloscopes running the Windows10 operating system:

• DDR2_800_DQS_Write.wfm

• DDR2_800_DQ_Write.wfm

• DDR2_800_CLK.wfm

Note: These waveforms have to be used only for Write bursts and CLK.

Recalling a waveform file

To recall a waveform file, follow these steps:

1. Click File > Recall in the oscilloscope menu bar to display the Recall dialog box.

2. Click Waveform icon in the left of the Recall dialog box.

3. Select Ref1, Ref2, Ref3, or Ref4 as the Destination option.

4. Browse to select the waveform. Use the keypad to edit the waveform file name.

5. Click Recall.

The oscilloscope recalls and activates the Reference Waveform control window.

6. Click On to display the waveform.

7. Click to return to the application. Alternatively, DDRA can also be accessed from Analyze > DDR Analysis.

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 5

Taking a measurement

This tutorial uses the following example:

DDR2 800MT/s, Write bursts - Differential measurements

Waveforms Used: DDR2_800_DQS_Write.wfm and DDR2_800_DQ_Write.wfm

1. To set the application to default values, click File > Recall Default Setup.

Note: This is not necessary if you have just started the application.

2. To view the DDRA application, select Analyze > DDR Analysis.

3. At Step 1, select the DDR2 standard and the data rate as 800 MT/s.

The default voltage settings are retained as shown.

Tutorial

4. At Step 2, select the filter.

5. At Step 3, select the measurements and the associated sources.

6. At Step 4, select the burst detection method.

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 6

Tutorial

The selected data rate, generation, and measurement type are reflected in ASM (Advanced Search and Mark) on selection in DDRA. Marks are available only for Read and Write bursts measurement type. Configure Search using Analyze > Search > Configure. The identified bursts are shown as small inverted marks ( ) in the oscilloscope display area. Each pair of marks specifies the start and stop of a burst. You can traverse from one mark to the other using the Mark Control window. For more details, refer to Oscilloscope help.

Note: Logic state+ DQ/DQS Phase Alignment is available only for the MSO series of oscilloscopes.

7. At Step 5, configure the burst detection settings based on the selected burst detection method as shown.

8. At Step 6, retain the settings as shown.

9. Click Single to run the application.

When complete, the result statistics with limits are shown under the Results tab.

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 7

The eye diagram plot is displayed as shown.

Tutorial

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 8

Operating basics

About basic operations

DDRA user interface

Following are the description of DDRA user interface:

Operating basics

• Use the Single button button again before process is completed will interrupt the processing cycle.

• Use the Run button to continuously acquire and accumulate measurements.

If prior measurements have been acquired and have not been cleared, the new measurements are added to the existing set. Push the button again to interrupt the current acquisition.

• Use the Recalc button to perform measurements on the waveform currently displayed on the oscilloscope without performing a new acquisition.

This is useful to modify a configuration parameter and re-run the measurements on the current waveform.

• Use the Clear button to clear all existing measurement results.

Note: Adding or deleting a measurement, or changing a configuration parameter of an existing measurement, will also cause measurements to be cleared. This is to prevent the accumulation of measurement statistics or sets of statistics that are not coherent.

Basic oscilloscope functions

Application directories

During DDRA application installation, various folders are created as described in the following table.

Type Directory path Description

Application executables

Limits

Mask File

Symbol Files

C:\Program Files\TekApplications\DDRA

C:\Users\Public\Tektronix\TekApplications \DDRA\Limits

C:\Users\Public\Tektronix\TekApplications \DDRA\Masks

C:\Users\Public\Tektronix\TekScope \BusDecodeTables\DDR

to obtain a set of measurements from a single new waveform acquisition. Pushing the

Contains DDRA application assembly files.

Contains limit files of DDRA standards and speed grades.

Contains mask files used for eye measurements.

Contains symbol files.

File name extensions

Table 2: File name extensions

File Extension Description

.csv

Table continued…

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 9

An ASCII file containing Comma Separated Values. This file format may be read by any ascii text editor (such as Notepad) or may be imported into spreadsheets such as Excel.

File Extension Description

Operating basics

.xml

.set

.mht

.wfm

.tsf

Returning to the application

When you access oscilloscope functions, the DDRA control windows may be replaced by the oscilloscope control windows or by the oscilloscope graticule. You can access oscilloscope functions in the following ways:

• From the menu bar on the oscilloscope, choose Analyze > DDR Analysis.

• Alternatively, you can switch between recently used control panels using the forward or back arrows on the right corner of the control panel.

Control panel

The Control panel appears on the right side of the application window. Using this panel, you can start or stop the sequence of processes for the application and the oscilloscope to acquire information from the waveform. The controls are Clear, Recall, Single, and Run. The following table describes each of these controls:

An ASCII file containing measurement setup information, limits or other data in Extensible Markup Language.

A binary file containing oscilloscope setup information in a proprietary format.

An HTML archive file, compatible with common Windows applications; contains the full report, including text and graphics.

A binary file containing an oscilloscope waveform record in a recallable, proprietary format.

A symbol file containing various symbols for various logic trigger patterns.

Item Description

Clear Clears the current result display and resets any statistical results and autoset reference

levels. For any input sources that have reference level autoset enabled, this control clears the current reference levels so that they will be recalculated during the next acquisition.

Recall Runs the selected measurements on the currently displayed waveform(s), without first

performing a new acquisition.

Single Initiates a single new acquisition and runs the selected measurements.

Run Initiates new acquisitions and runs the selected measurements repeatedly until Stop is

selected. For any non-live sources (Reference waveforms or Math waveforms not dependent on a live channel), only a single processing cycle will occur.

Show Plots Displays the Plot summary window when selected. This button appears in the control panel

only when one or more plots have been defined.

Advanced Setup DPOJET Transitions to the Jitter and Eye Diagram Analysis application when selected, importing all

currently defined DDRA measurements. This button appears in the control panel when you open the DDR analysis application. This is useful to add additional measurements not defined in DDRA, or to change measurement configurations to intentionally deviate from those recommended by DDRA.

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 10

Saving and recalling setups

Saving a setup

The DDRA application state is automatically saved along with the oscilloscope state. To save the oscilloscope settings and the application state, do the follow steps:

1. Click File > Save As > Setup.

2. In the file browser, select the directory to save the setup file.

3. Select or enter a file name.

The application appends *_DDRA.xml and *_DPOJET.xml to store the DDR setup, and *.set to store the oscilloscope settings.

4. Click Save.

Note: After the oscilloscope application is started, DDRA needs to be launched at least once before any saved

DDRA configuration can be recalled.

Recalling a saved setup

To recall a previously saved set of application and oscilloscope settings, do the following steps:

Note: While recalling setup files with both DDRA and DPOJET saved settings, DDRA setup values get a higher precedence over DPOJET setup values. For example, select a DPOJET measurement and a DDRA measurement, change the ref levels of DPOJET measurement, and save the setup file. On recalling the setup file, you will see that the DPOJET reference level settings are overwritten by the DDRA measurement ref levels.

Operating basics

1. Click File > Recall.

2. Click Setup in the left column if it is not already selected.

3. Select the directory in the file browser to recall the setup file.

4. Select a .set file and click Recall.

Note: If DDRA has been launched at least once since the oscilloscope application was started, only .set files can

be selected. Also, any corresponding *_DDRA.xml and *_DPOJET.xml files in the same directory will be recalled as well but the DDRA configuration will be ignored.

Recalling the default setup

To recall the default application and oscilloscope settings, click File > Recall Default Setup.

Note: Recalling the default setup sets the DDRA application to DDR3 generation and the data rate to None.

Search and mark

The data rate, generation, and measurement type selected in DDRA are also set in Advanced Search and Mark (ASM). Marks are available only for the Read and Write bursts measurement types. You can configure Search using Analyze > Search > Configure. The identified bursts are shown as small inverted marks ( ) in the oscilloscope display area. Each pair of marks specifies the start and stop of a burst. You can move from one mark to the other using the Mark Control window.

Note: LPDDR4/LPDDR4X burst cannot be configured from ASM window.

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 11

Operating basics

Limits

A limits file allows you to configure the limits used to determine the Pass or Fail status for tests. Each limits file includes a list of one or more measurements, and the ranges of acceptable values for any or all statistics for each measurement. The measurement include combinations of all measurements and statistical characteristics, and an appropriate range of values for each combination.

The application provides preconfigured limits files for many combinations of standards and speed grades. You can create a limit file by specifying limits for any of the result parameters such as Mean, Std Dev, Max, Min, peak-to-peak, population, MaxPosDelta, and MinPosDelta. For each of these result parameters, you can specify the Upper Limit Equality (UL), and the Lower Limit Equality (LL). The measurement names in the limits file must be entered as mentioned in About DDR

Analysis.

To include pass/fail status in the result statistics, you can create a custom limits file in the following format using an XML editor or any other editor. If the file is created in any other editor such as Notepad, it should be saved in Unicode format.

The following is a sample of the limit file for DDR2 generation, the data rate being 667 MHz -

DDR2_667MHz_Limits.xml

<?xml version="1.0" encoding="utf-8"?> <Main>  <Measurement> <NAME>tDH-Diff(base)</NAME> <STATS> <STATS_NAME>Min</STATS_NAME> <LIMIT>LL</LIMIT> <UL>0</UL> <LL>175e-12</LL> </STATS> </Measurement> <Measurement> <NAME>tDS-Diff(base)</NAME>

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 12

You can find limit files for various data rates of different DDR standards and speed bins at C:\Users\Public \Tektronix\TekApplications\DDRA\Limits.

Dynamic limits

The application supports both static (predefined, using limits file) and dynamic limits.

The concept of dynamic limits is explained taking an example of a measurement, tCH(avg):

• If the dynamic limits of a measurement depend on the result of other measurement(s) that have not yet been calculated, the limit field in the Results panel shows Derived... A tool tip displays the message:

This limit is calculated based on measurement tCK(avg).

Operating basics

• On clicking Run/Single, the results are shown in the following figure.

• If there is an error in calculating dynamic limits or if the limits are not defined by the specification, the limit text field displayed NA. A tool tip displays the message:

This limit is calculated based on measurement tCK(avg).

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 13

Log messages

Dynamic limit failure:

1. The limits for measurement is not defined in the JEDEC specification.

2. The limits for measurement cannot be computed due to unavailability of dependent measurement results.

References

Dynamic Limits for DDR Measurements

Dynamic Limits for DDR2 Measurements

Dynamic Limits for DDR3 Measurements

Dynamic Limits for DDR3L Measurements

Dynamic Limits for DDR4 Measurements

Dynamic Limits for LPDDR Measurements

Dynamic Limits for LPDDR2 Measurements

Dynamic Limits for LPDDR4 Measurements

Dynamic Limits for LPDDR4X Measurements

Operating basics

Setting up DDR for analysis

About DDR analysis

The DDR Analysis window allows you to select various standards and to set up and run a pre-configured measurement either through the DDRA or the DPOJET application.

Select Analyze > DDR Analysis to open the DDRA application.

The Setup panel in DDR Analysis application includes the following steps:

Generation, Rate and Levels

Interposer Filter

Measurements and Sources

Burst Detection Method

Burst Detection Settings

DDR Analysis Memory Interface Electrical Verification and Debug Solution Printable Application Help 14

+ 217 hidden pages

Tektronix DDR Analysis Application Help User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Welcome

Introduction

Related documentation

Conventions

Technical support

Customer feedback

Getting started

DDRA prerequisites

Requirements and restrictions

Supported probes

Installing the application

Version information

Tutorial

Introduction to the tutorial

Setting up the oscilloscope

Starting the application

Waveform files

Recalling a waveform file

Taking a measurement

Operating basics

About basic operations

DDRA user interface

Basic oscilloscope functions

Application directories

File name extensions

Returning to the application

Control panel

Saving and recalling setups

Saving a setup

Recalling a saved setup

Recalling the default setup

Search and mark

Limits

Dynamic limits

Setting up DDR for analysis

About DDR analysis