Rohde&Schwarz RTP User manual

R&S®RTO-K26/-K27, R&S®RTO6-

K26/-K27, R&S®RTP-K26/-K27

D-PHY Compliance Test

User Manual

1326101002

Version 09

(=J::2)

This manual describes the D-PHY compliance test procedures with the following option:

●R&S®RTO-K26 (1317.5668.02) - D-PHY

●R&S®RTO6-K26 (1801.6958.02) - D-PHY

●R&S®RTP-K26 (1337.8727.02) - D-PHY

●R&S®RTO-K27 (1803.6584.02) - D-PHY 2.5

●R&S®RTO6-K27 (1803.6578.02) - D-PHY 2.5

●R&S®RTP-K27 (1800.5993.02) - D-PHY 2.5

The tests require the R&S ScopeSuite software.

The software contained in this product uses several valuable open source software packages. For information, see the "Open

Source Acknowledgment" document, which is available for download from the R&S RTO/RTO6/RTP product page at http://

www.rohde-schwarz.com/product/rto.html > "Software".

Rohde & Schwarz would like to thank the open source community for their valuable contribution to embedded computing.

Muehldorfstr. 15, 81671 Muenchen, Germany

Phone: +49 89 41 29 - 0

Email: [email protected]

Internet: www.rohde-schwarz.com

Subject to change – data without tolerance limits is not binding.

R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.

MIPI® marks and logos are service marks owned by MIPI Alliance, Inc. and any use of such marks by Rohde & Schwarz is under

license.

All other trademarks are the properties of their respective owners.

1326.1010.02 | Version 09 | R&S®RTO-K26/-K27, R&S®RTO6-K26/-K27, R&S®RTP-K26/-K27

The following abbreviations are used throughout this manual: R&S®RTO is abbreviated as R&S RTO, R&S®RTP is abbreviated as

R&S RTP and R&S®ScopeSuite is abbreviated as R&S ScopeSuite.

Contents

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Contents

1 R&S ScopeSuite overview.....................................................................5

2 Preparing the measurements................................................................7

2.1 Test equipment..............................................................................................................7

2.2 Installing software and license.................................................................................... 7

2.3 Setting up the network................................................................................................. 8

2.4 Starting the R&S ScopeSuite....................................................................................... 9

2.5 Connecting the R&S RTO/RTO6/RTP.......................................................................... 9

2.6 Report configuration...................................................................................................11

3 Performing tests...................................................................................12

3.1 Starting a test session................................................................................................12

3.2 Configuring the test.................................................................................................... 13

3.2.1 General test settings..................................................................................................... 14

3.3 Getting test results..................................................................................................... 16

4 D-PHY compliance tests......................................................................18

4.1 Starting D-PHY compliance tests.............................................................................. 20

4.2 Test configuration for D-PHY..................................................................................... 20

4.3 Data lane LP-TX signaling requirements (Group 1)................................................. 24

4.3.1 Test setup......................................................................................................................25

4.3.2 Performing Group 1 test cases..................................................................................... 26

4.3.3 Measurements.............................................................................................................. 27

4.4 Clock lane LP-TX signaling requirements (Group 2)............................................... 36

4.4.1 Test setup......................................................................................................................37

4.4.2 Performing Group 2 test cases..................................................................................... 38

4.4.3 Measurements.............................................................................................................. 39

4.5 Data lane HS-TX signaling requirements (Group 3).................................................46

4.5.1 Test setup......................................................................................................................46

4.5.2 Performing Group 3 test cases..................................................................................... 50

4.5.3 Measurements.............................................................................................................. 51

4.6 Clock lane HS-TX signaling requirements (Group 4)...............................................69

4.6.1 Test setup......................................................................................................................70

Contents

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4.6.2 Performing Group 4 test cases..................................................................................... 73

4.6.3 Measurements.............................................................................................................. 74

4.7 HS-TX clock-to-data lane timing requirements (Group 5)....................................... 98

4.7.1 Test setup......................................................................................................................99

4.7.2 Performing Group 5 test cases................................................................................... 101

4.7.3 Measurements............................................................................................................ 102

4.8 Eye test.......................................................................................................................112

4.8.1 Test setup.................................................................................................................... 112

4.8.2 Performing Eye test cases...........................................................................................113

4.8.3 Measurements.............................................................................................................114

R&S ScopeSuite overview

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1 R&S ScopeSuite overview

The R&S ScopeSuite software is used with R&S RTO/RTO6/RTP oscilloscopes. It can

be installed on a test computer or directly on the oscilloscope. For system require-

ments, refer to the Release Notes.

The R&S ScopeSuite main panel has several areas:

●"Settings": connection settings to oscilloscope and other instruments also default

report settings

●"Compliance Tests": selection of the compliance test

●"Demo": accesses demo test cases that can be used for trying out the software

without having a connection to an oscilloscope

●: shift sideways to change the transparency of the dialog box

●"Help": opens the help file, containing information about the R&S ScopeSuite con-

figuration

●"About": gives information about the R&S ScopeSuite software

●"Tile View": allows a personalization of the compliance test selection

You can configure which tests are visible in the compliance test section and which

are hidden, so that only the ones you use are displayed.

► To hide a test from the "Compliance Tests" view, do one of the following:

R&S ScopeSuite overview

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a) Right-click on the compliance test that you want to hide.

The icon of the test changes, see Figure 1-1. Now with a left click you can hide

the test.

Figure 1-1: Unpin icon

b) Click on "Title View" to show a list of the available test cases. By clicking a test

case in the show list, you can pin/unpin it from the main panel.

Preparing the measurements

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2 Preparing the measurements

2.1 Test equipment

For D-PHY compliance tests, the following test equipment is needed:

●R&S RTO/RTO6/RTP oscilloscope with 4 channels and at least 4 GHz bandwidth

●For measuring the clock signal (+ and -): either 1 differential probe or 2 single-

ended probes with at least 4 GHz bandwidth. However, note that D-PHY Group 2

and Group 4 tests require 2 probes for the clock signal.

●For measuring the data signal (+ and -): 2 probes with at least 4 GHz bandwidth

Available probes: R&S RT-ZD40 or R&S RT-ZM with a different probe tip selection.

●R&S RTO/ RTO6 / RTP-K26 D-PHY compliance test option (required option, instal-

led on the oscilloscope)

●R&S RTO/ RTO6 / RTP-K27 D-PHY compliance test option (required option, instal-

led on the oscilloscope)

●For Eye Tests, the following options are needed:

For R&S RTP:

– Option R&S RTP-K136 or R&S RTP-K137 Advanced eye analysis

For R&S RTO/ R&S RTO6:

– R&S RTO/R&S RTO6-K91 (DDR3) or R&S RTO/R&S RTO6-K93 (DDR4)

●Recommended test fixture for LP-TX tests: MIPI D-PHY Capacitive Load (CLOAD)

fixture from The University of New Hampshire InterOperability Laboratory (UNH-

IOL)

●Recommended termination board for HS-TX tests: MIPI D-PHY Reference Termi-

nation Board (RTB) from The University of New Hampshire InterOperability Labora-

tory (UNH-IOL)

●The free-of-charge R&S ScopeSuite software, which can be installed on a com-

puter or directly on the oscilloscope.

2.2 Installing software and license

The preparation steps are performed only once for each computer and instrument that

are used for testing.

Uninstall older versions of the R&S ScopeSuite

If an older version of the R&S ScopeSuite is installed, make sure to uninstall the old

version before you install the new one. You can find the version number of the current

installation in "Help" menu > "About". To uninstall the R&S ScopeSuite, use the Win-

dows " Control Panel" > "Programs".

Installing software and license

Preparing the measurements

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For best operation results, we recommend that the installed firmware versions of the

R&S ScopeSuite and the oscilloscope are the same.

To install the R&S ScopeSuite

1. Download the latest R&S ScopeSuite software from the "Software" section on the

Rohde & Schwarz R&S RTO/RTO6/RTP website:

www.rohde-schwarz.com/product/rtp.html

www.rohde-schwarz.com/product/rto.html

2. Install the R&S ScopeSuite software:

● On the computer that is used for testing, or

● On the R&S RTO/RTO6/RTP.

For system requirements, refer to the Release Notes.

To install the license key on the R&S RTO/RTO6/RTP

► When you got the license key of the compliance test option, enable it on the oscil-

loscope using [Setup] > "SW Options".

For a detailed description, refer to the R&S RTO/RTO6/RTP user manual, chapter

"Installing Options", or to the online help on the instrument.

2.3 Setting up the network

If the R&S ScopeSuite software runs on a test computer, the computer and the testing

oscilloscope require a LAN connection.

For some test cases, you need an additional instrument: arbitrary waveform generator

(AWG), vector network analyzer (VNA), or spectrum analyzer. These instruments can

be used in automatic or manual mode. For automatic testing, a LAN connection to the

additional instrument is required.

There are two ways of connection:

●LAN (local area network): It is recommended that you connect to a LAN with DHCP

server. This server uses the Dynamic Host Configuration Protocol (DHCP) to

assign all address information automatically.

●Direct connection of the instruments and the computer or connection to a switch

using LAN cables: Assign fixed IP addresses to the computer and the instruments

and reboot all devices.

To set up and test the LAN connection

1. Connect the computer and the instruments to the same LAN.

2. Start all devices.

3. If no DHCP server is available, assign fixed IP addresses to all devices.

4. Ping the instruments to make sure that the connection is established.

Setting up the network

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5. If VISA is installed, check if VISA can access the instruments.

a) Start VISA on the test computer.

b) Validate the VISA address string of each device.

See also:

●Chapter 2.5, "Connecting the R&S RTO/RTO6/RTP", on page 9

2.4 Starting the R&S ScopeSuite

To start the R&S ScopeSuite on the test computer or on the oscilloscope:

► Double-click the R&S ScopeSuite program icon.

To start the R&S ScopeSuite on the instrument, in the R&S RTO/RTO6/RTP firmware:

► In the "Apps" dialog, open the "Compliance" tab.

2.5 Connecting the R&S RTO/RTO6/RTP

If the R&S ScopeSuite is installed directly on the instrument, the software detects the

R&S RTO/RTO6/RTP firmware automatically, and the "Oscilloscope" button is not

available in the R&S ScopeSuite.

If the R&S ScopeSuite software runs on a test computer, the computer and the testing

oscilloscope require a LAN connection, see Chapter 2.3, "Setting up the network",

on page 8. The R&S ScopeSuite software needs the IP address of the oscilloscope to

establish connection.

1. Start the R&S RTO/RTO6/RTP.

2. Start the R&S ScopeSuite software.

3. Click "Settings" > "Oscilloscope".

Connecting the R&S RTO/RTO6/RTP

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4. Enter the IP address of the oscilloscope.

To obtain the IP address: press the Rohde & Schwarz logo at the top-right corner

of the oscilloscope's display.

5. Click "Get Instrument Information".

The computer connects with the instrument and gets the instrument data.

Connecting the R&S RTO/RTO6/RTP

Preparing the measurements

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If the connection fails, an error message is shown.

2.6 Report configuration

In the "Report Configuration" menu, you can select the format of the report and the

details to be included in the report. You can also select an icon that is displayed in the

upper left corner of the report.

Also, you can enter common information on the test that is written in the "General Infor-

mation" section of the test report.

Report configuration

Performing tests

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3 Performing tests

3.1 Starting a test session

After you open a compliance test, the "Session Selection" dialog appears. In this dia-

log, you can create new sessions, open or view existing report.

The following functions are available for handling test sessions:

Function Description

"Add" Adds a new session

"Open" Opens the selected session

"Remove" Removes the selected session

"Rename" Changes the "Session Name"

"Comment" Adds a comment

"Show report" Generates a report for the selected session

To add a test session

1. In the R&S ScopeSuite window, select the compliance test.

2. In the "Session Selection" dialog press "Add".

3. If necessary change the "Session Name"

Starting a test session

Performing tests

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To open a test session

1. In the R&S ScopeSuite window, select the compliance test.

2. In the "Session Selection" dialog, select the session you want to open and double

click on it.

Alternatively, select the session and press "Open".

To show a report for a test session

1. In the R&S ScopeSuite window, select the compliance test.

2. In the "Session Selection" dialog, select the session you want the report for and

press "Show report".

3.2 Configuring the test

1. In the R&S ScopeSuite window, select the compliance test to be performed:

● "MIPI D-PHY"

2. Open a test session, see Chapter 3.1, "Starting a test session", on page 12.

3. Adjust the "Properties" settings for the test cases you want to perform.

4. Click "Limit Manager" and edit the limit criteria, see Chapter 3.2.1.1, "Limit man-

ager", on page 15.

5. If you want to use special report settings the "Report Config" tab to define the for-

mat and contents of the report. Otherwise the settings defined in "RSScopeSuite" >

"Settings" > "Report" are used. See Chapter 2.6, "Report configuration",

on page 11.

6. Click "Test Checked"/"Test Single" and proceed as described in the relevant test

case chapter.

Configuring the test

Performing tests

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3.2.1 General test settings

Each session dialog is divided into several sections:

●"Properties": shows the settings that can be made for the test case selected on the

left side of the dialog. You can differentiate between the "All" and the sub test prop-

erties

In the "All" > "Properties" tab you can configure the settings for all test cases in the

current session. Once you change and save a setting in this tab, the changes will

be done for all test in the sessions. At the same time, there will be a special mark-

ing for the functions that have different settings for different sub tests.

●"Limit Manager": sets the measurement limits that are used for compliance testing,

see Chapter 3.2.1.1, "Limit manager", on page 15.

●"Results": shows an overview of the available test results for this session.

●"Instruments": defines instruments settings for connecting to external devices, that

are specific for this test session.

Configuring the test

Performing tests

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When a session is first created the global settings ("RSScopeSuite" > "Settings" >

"Instruments") are copied to the session. This "Instruments" tab can be used to

change those copied defaults.

●"Report Config": defines the format and contents of the report for this session.

When a session is first created the global settings ("RSScopeSuite" > "Settings" >

"Report") are copied to the session. This "Report Config" tab can be used to

change those copied defaults.

●"Test Checked"/ "Test Single": starts the selected test group.

3.2.1.1 Limit manager

The "Limit Manager" shows the measurement limits that are used for compliance test-

ing.

Each limit comprises the comparison criterion, the unit, the limit value A, and a second

limit value B if the criterion requires two limits.

You can set the values to defaults, change the values in the table, export the table in

xml format, or import xml files with limit settings.

You can also return the values to the original limits with "Reset to default".

1. Select the "Test Type".

2. Check and adjust the measurement limits.

Configuring the test

Performing tests

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3.3 Getting test results

For each test, the test data - report, diagrams and waveform files - is saved in the fol-

lowing folder:

%ProgramData%\Rohde-Schwarz\RSScopeSuite2\Sessions\D-PHY\

<Session_Name>

If you resume an existing session, new measurements are appended to the report,

new diagrams and waveform files are added to the session folder. Existing files are not

deleted or replaced. Sessions data remain until you delete them in the "Results" tab of

the session.

The report format can be defined in "RSScopeSuite" > "Settings" > "Report" for all

compliance tests (see also Chapter 2.6, "Report configuration", on page 11). If you

want to use special report settings for a session, you can define the format and con-

tents of the report in the "Report Config" tab of the session.

All test results are listed in the "Results" tab. Reports can be provided in PDF,

MSWord, or HTML format. To view and print PDF reports, you need a PDF viewer, for

example, the Acrobat Reader.

The test report file can be created at the end of the test, or later in the "Session Selec-

tion" dialog.

Getting test results

Performing tests

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To show a test report

1. In the R&S ScopeSuite window, select the compliance test to be performed.

2. Select the session name in the "Session Selection" dialog and click "Show report".

The report opens in a separate application window, depending on the file format.

You can check the test results and print the report.

To delete the results, diagrams and waveform files of a session

1. In the "Session Selection" dialog select the session and open it.

2. In the "Results" tab, select the result to be deleted.

3. Click "Remove".

Getting test results

D-PHY compliance tests

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4 D-PHY compliance tests

D-PHY Ethernet compliance tests require option R&S RTO/RTO6/RTP-K26.

The software closely follows the MIPI Alliance's Conformance Test Suite for D-PHY

Physical Layer Version 1.1 Revision 03, dated June 5th, 2013. Should anything

remain unclear in this manual, please refer to that CTS document, which is available

for members of the MIPI Alliance at https://members.mipi.org/wg/All-Members/home/

approved-specs.

Table 4-1: Overview of D-PHY compliance tests

Test Groups and Tests see

Group 1 (7 tests): Data Lane LP-TX Signaling Requirements

1.1.1 – Data Lane LP-TX Thevenin Output High Level Voltage (VOH)

1.1.2 – Data Lane LP-TX Thevenin Output Low Level Voltage (VOL)

1.1.3 – Data Lane LP-TX 15%-85% Rise Time (TRLP)

1.1.4 – Data Lane LP-TX 85%-15% Fall Time (TFLP)

1.1.5 – Data Lane LP-TX Slew Rate vs. CLOAD (δV/δtSR)

1.1.6 – Data Lane LP-TX Pulse Width of Exclusive-OR Clock (TLP-PULSE-TX)

1.1.7 – Data Lane LP-TX Period of Exclusive-OR Clock (TLP-PER-TX)

page

24

Group 2 (5 tests): Clock Lane LP-TX Signaling Requirements

1.2.1 – Clock Lane LP-TX Thevenin Output High Level Voltage (VOH)

1.2.2 – Clock Lane LP-TX Thevenin Output Low Level Voltage (VOL)

1.2.3 – Clock Lane LP-TX 15%-85% Rise Time (TRLP)

1.2.4 – Clock Lane LP-TX 85%-15% Fall Time (TFLP)

1.2.5 – Clock Lane LP-TX Slew Rate vs. CLOAD (δV/δtSR)

page

36

Group 3 (16 tests): Data Lane HS-TX Signaling Requirements

1.3.1 – Data Lane HS Entry: Data Lane TLPX Value

1.3.2 – Data Lane HS Entry: Data Lane THS-PREPARE Value

1.3.3 – Data Lane HS Entry: Data Lane THS-PREPARE + THS-ZERO Value

1.3.4 – Data Lane HS-TX Differential Voltages VOD(0) and VOD(1)

1.3.5 – Data Lane HS-TX Differential Voltage Mismatch ΔVOD

1.3.6 – Data Lane HS-TX Single-Ended Output Voltages VOHHS(DP) and VOHHS(DN)

1.3.7 – Data Lane HS-TX Static Common-Mode Voltages VCMTX(1) and VCMTX(0)

1.3.8 – Data Lane HS-TX Static Common-Mode Voltage Mismatch ΔVCMTX(1,0)

1.3.9 – Data Lane HS-TX Dynamic Common-Level Variations Between 50-450 MHz ΔVCMTX(LF)

1.3.10 – Data Lane HS-TX Dynamic Common-Level Variations Above 450 MHz ΔVCMTX(HF)

1.3.11 – Data Lane HS-TX 20%-80% Rise Time tR

1.3.12 – Data Lane HS-TX 80%-20% Fall Time tF

1.3.13 – Data Lane HS Exit: THS-TRAIL Value

1.3.14 – Data Lane HS Exit: 30%-85% Post-EoT Rise Time TREOT

1.3.15 – Data Lane HS Exit: TEOT Value

1.3.16 – Data Lane HS Exit: THS-EXIT Value

page

46

D-PHY compliance tests

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Test Groups and Tests see

Group 4 (18 tests): Clock Lane HS-TX Signaling Requirements

1.4.1 – Clock Lane HS Entry: TLPX Value

1.4.2 – Clock Lane HS Entry: TCLK-PREPARE Value

1.4.3 – Clock Lane HS Entry: TCLK-PREPARE + TCLK-ZERO Value

1.4.4 – Clock Lane HS-TX Differential Voltages VOD(0) and VOD(1)

1.4.5 – Clock Lane HS-TX Differential Voltage Mismatch ΔVOD

1.4.6 – Clock Lane HS-TX Single-Ended Output Voltages VOHHS(DP) and VOHHS(DN)

1.4.7 – Clock Lane HS-TX Static Common-Mode Voltages VCMTX(1) and VCMTX(0)

1.4.8 – Clock Lane HS-TX Static Common-Mode Voltage Mismatch ΔVCMTX(1,0)

1.4.9 – Clock Lane HS-TX Dynamic Common-Level Variations Between 50-450 MHz ΔVCMTX(LF)

1.4.10 – Clock Lane HS-TX Dynamic Common-Level Variations Above 450 MHz ΔVCMTX(HF)

1.4.11 – Clock Lane HS-TX 20%-80% Rise Time tR

1.4.12 – Clock Lane HS-TX 80%-20% Fall Time tF

1.4.13 – Clock Lane HS Exit: TCLK-TRAIL Value

1.4.14 – Clock Lane HS Exit: 30%-85% Post-EoT Rise Time TREOT

1.4.15 – Clock Lane HS Exit: TEOT Value

1.4.16 – Clock Lane HS Exit: THS-EXIT Value

1.4.17 – Clock Lane HS Clock Instantaneous: UIINST Value

1.4.18 – Clock Lane HS Clock Delta UI: (ΔUI) Value

1.4.19 – TX Spread Spectrum Clocking (SSC) requirements

1.4.20 – Clock Lane HS Clock Period Jitter

page

69

Group 5 (4 tests): HS-TX Clock-to-Data Lane Timing Requirements

1.5.1 – HS Entry: TCLK-PRE Value

1.5.2 – HS Exit: TCLK-POST Value

1.5.3 – HS Clock Rising Edge Alignment to First Payload Bit

1.5.4 – Data-to-Clock Skew (TSKEW[TX])

1.5.5 – Initial HS Skew Calibration Burst TSKEWCAL-SYNC and TSKEWCAL

1.5.6 – Periodic HS Skew Calibration Burst TSKEWCAL-SYNC and TSKEWCAL

1.5.8 – Alternate calibration sequence TPREAMBLE and TALTCAL

1.5.9 – Preamble sequence TPREAMBLE and TEXTSYNC

1.5.10 – Clock and data lane TXHS-Idle THS IDLE-POST, THS-IDLE-CLKHS0, THS-IDLE-PRE

page

98

Eye Test

1.4.18 – Clock Lane HS Clock Delta UI: (ΔUI) Value

1.4.20 – Clock Lane HS Clock Period Jitter

1.5.7 – HS Data and Clock Eye Diagram

Any D-PHY configuration consists of at least one clock lane module, and one or sev-

eral data lane modules. Each module provides a synchronized connection between

master and slave. During normal operation, a lane switches between the modes "low

power" (LP) and "high speed" (HS). High speed functions are used for HS data trans-

mission in bursts with an arbitrary number of payload data bytes. Low power functions

D-PHY compliance tests

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are mainly used for control, but have other optional use cases, like LP escape mode.

The presence of HS and LP functions is correlated.

●Starting D-PHY compliance tests............................................................................20

●Test configuration for D-PHY...................................................................................20

●Data lane LP-TX signaling requirements (Group 1)................................................24

●Clock lane LP-TX signaling requirements (Group 2)...............................................36

●Data lane HS-TX signaling requirements (Group 3)............................................... 46

●Clock lane HS-TX signaling requirements (Group 4)..............................................69

●HS-TX clock-to-data lane timing requirements (Group 5).......................................98

●Eye test................................................................................................................. 112

4.1 Starting D-PHY compliance tests

Before you run the test, complete the following actions:

●Initial setup of the equipment, see Chapter 2.2, "Installing software and license",

on page 7

●LAN connection of the oscilloscope and the computer running the R&S Scope-

Suite, see Chapter 2.5, "Connecting the R&S RTO/RTO6/RTP", on page 9

1. Select "D-PHY" in the R&S ScopeSuite start window.

2. In the "Session Selection" dialog, choose the D-PHY standard version.

You can select one of the following : "1.1", "1.2", "2.0", "2.1", "2.5".

3. Add a new test session and name it. See Chapter 3.1, "Starting a test session",

on page 12.

4. Open the test session.

5. Adjust the test configuration settings if necessary. See:

●Chapter 3.2.1.1, "Limit manager", on page 15

●Chapter 4.2, "Test configuration for D-PHY", on page 20

6. Select/check the test cases that you want to run and click "Test Single"/"Test

checked".

7. A step-by step guide explains the following individual setup steps. When you have

finished all steps of the step-by-step guide, the compliance test runs automatically.

4.2 Test configuration for D-PHY

The test configuration consists of the general configuration settings as described in

Chapter 3.2, "Configuring the test", on page 13, and some additional test-specific con-

figuration settings, described below:

●Low-power properties for DUT lanes in low power (LP) mode, groups 1 and 2.

●High speed for DUT lanes in high speed (HS) mode, groups 3, 4 and 5.

Test configuration for D-PHY

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Rohde&Schwarz RTP User manual

Rohde&Schwarz RTP User manual

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