MIPI D-PHY Operator's Manual September, 2010
LeCroy Corporation 700 Chestnut Ridge Road Chestnut Ridge, NY, 10977-6499 Tel: (845) 578-6020, Fax: (845) 578 5985 Internet: www.lecroy.com © 2010 by LeCroy Corporation. All rights reserved. LeCroy and other product or brand names are trademarks or requested trademarks of their respective holders. Information in this publication supersedes all earlier versions. Specifications are subject to change without notice.
Operator's Manual TABLE OF CONTENTS MIPI D-PHY Overview................................................................................................ 4 The Main MIPI D-PHY Dialog ..................................................................................... 4 MIPI D-PHY Dialog Details ......................................................................................... 4 Enable, Show Decode, Setup Acquisition .................................................................... 4 Enable ........
MIPI D-PHY MIPI D-PHY Overview The MIPI D-PHY debug utility provides MIPI D-PHY developers a way to perform typical compliance measurements without being constrained by QualiPHY compliance parameters. This debug utility is used alongside all the powerful oscilloscope features provided in LeCroy oscilloscopes to further analyze compliance failures. Potential debug setup examples include: Setting up tests to run on much more acquisitions than the QualiPHY compliance software permits.
Operator's Manual Show Decode Note: If you do not have the MIPI D-PHY Serial Decode Option (D PHY-D), you won't see the Show Decode checkbox beneath the Enable checkbox. Marking this checkbox (when you have the option) shows annotations on your waveforms. Setup Acquisition The Setup Acquisition button automatically makes the following settings. The settings are largely based on your LP (Low Power) or HS (High Speed) mode selection on the Mode and Input Selection Area of the MIPI D-PHY Dialog (on page 6).
MIPI D-PHY Mode and Input Selection Area of the MIPI D-PHY Dialog As previously mentioned in the MIPI D-PHY Dialog Details (on page 4) topic, the Mode selection affects the settings the Setup Acquisition button has based on the LP (Low Power) or HS (High Speed) choices. The selection also controls which tests are presented on the Test Parameter Switchboard and corresponding Test Dialogs.
Operator's Manual Eye Diagram Control Area The Eye Diagram Control Area of the MIPI D-PHY dialog contains Show Eye, Eye Source, Bit Rate, and Find Bit Rate fields. After selecting your Mode, and configuring signals for Dp (Data Positive), Dn (Data Negative), CLKp (Clock Positive), and CLKn (Clock Negative) as desired, make use of the following Eye Diagram Controls. MIPI D-PHY processes the information and responds as the controls are used.
MIPI D-PHY Bit Rate and Find Bit Rate These fields allow you to either enter a specific Bit Rate, or have MIPI D-PHY find your signal's bitrate. HS (High Speed) Tests All Dphy1 - 12 dialogs have On, Category, and Measure controls. When the HS Rise & Fall category is selected, DATA/CLK-VOD1, DATA/CLK-VOD0, and Find Levels controls are also shown.
Operator's Manual BRIEF HS DATA TIMING TEST DESCRIPTIONS Name Purpose TLP-01 To verify that the duration (TLPX) of the final Data Lane LP-01 state immediately before HS transmission is greater than the minimum conformant value. THS-PREPARE To verify that the duration of the final LP-00 state immediately before HS transmission (THS-PREPARE) is within the conformance limits.
MIPI D-PHY Name Purpose TEOT To verify that the interval measured from the start of the DUT Clock Lane HS transmitter’s TCLK-TRAIL to the start of the first Clock Lane LP-11 state (TEOT) is less than the maximum allowed limit. THS-EXIT To verify that the duration that the Clock Lane transmitter remains in the LP-11 (Stop) state after exiting HS mode (THS-EXIT), is greater than the minimum required value.
Operator's Manual With HS Rise & Fall selected in the Category field, the following Measure values are available: TR-DATA, TF-DATA, TR-CLK, and TF-CLK. Note: As mentioned previously in this section, when this category is selected, DATA/CLK-VOD1, DATA/CLK-VOD0, and Find Levels controls are also shown. Provide values for the additional fields or use the Find Levels button as desired.
MIPI D-PHY BRIEF LP LEVELS TEST DESCRIPTIONS Name Purpose VOH-Dp VOH-Dn VOH-CLKp To verify that the Thevenin Output High Level Voltage (VOH) of the DUT’s Data & Clock Lanes LP transmitter is within the conformance limits. VOH-CLKn VOL-Dp VOL-Dn VOL-CLKp To verify that the Thevenin Output Low Level Voltage (VOL) of the DUT’s Data & Clock Lanes LP transmitter is within the conformance limits.
Operator's Manual BRIEF LP TIMING TEST DESCRIPTIONS Name Purpose TLP-PER-Data-500 To verify that the period (TLP-PER-TX) of the DUT’s Data Lane LP transmitter XOR Clock is within the conformance limits. TLP-PER-Data-930 TLP-PULSE-Data-500 TLP-PULSE-Data-930 FIRST-TLP-PULSE-Data-500 FIRST-TLP-PULSE-Data-930 To verify that the pulse width (TLP-PULSE-TX) of the DUT’s Data Lane LP transmitter XOR Clock is within the conformance limits.
MIPI D-PHY Reference Material Specifications Note: Specifications are subject to change without notice. Please refer to the LeCroy website at www.lecroy.com for the most current specification information regarding your product. Contact LeCroy for Support Use the following regional contacts to find the appropriate support location nearest you.
Operator's Manual Index H B HS (High Speed) Tests, 8 Bit Rate, 8 L C Category and Measure Combinations for HS Dphy1 12 Dialogs, 8 Category and Measure Combinations for LP Dphy1 12 Dialogs, 11 D LP (Low Power) Tests, 11 M MIPI D-PHY Dialog Details, 4 MIPI D-PHY Overview, 4 Mode Section of the MIPI D-PHY Dialog, 6 Dp, Dn, CLKp, and CLKn Controls, 6 O E Official MIPI D-PHY Test Algorithms, 11 Enable, 4 Enable, Show Decode, Setup Acquisition, 4 Enabling Tests, 6 Eye Diagram Control Area, 7 Eye Source,
