Texas Instruments DS250DF230EVM User Manual Download Page 29

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4

4

EVM Use Restrictions and Warnings:

4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT

LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.

4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling

or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information
related to, for example, temperatures and voltages.

4.3

Safety-Related Warnings and Restrictions:

4.3.1

User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user
guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and
customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input
and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or
property damage. If there are questions concerning performance ratings and specifications, User should contact a TI
field representative prior to connecting interface electronics including input power and intended loads. Any loads applied
outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible
permanent damage to the EVM and/or interface electronics. Please consult the EVM user guide prior to connecting any
load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative.
During normal operation, even with the inputs and outputs kept within the specified allowable ranges, some circuit
components may have elevated case temperatures. These components include but are not limited to linear regulators,
switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the
information in the associated documentation. When working with the EVM, please be aware that the EVM may become
very warm.

4.3.2

EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the
dangers and application risks associated with handling electrical mechanical components, systems, and subsystems.
User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,
affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic
and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely
limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and
liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or
designees.

4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,

state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all
responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and
liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local
requirements.

5.

Accuracy of Information:

To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate

as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as
accurate, complete, reliable, current, or error-free.

6.

Disclaimers:

6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY MATERIALS PROVIDED WITH THE EVM (INCLUDING, BUT NOT

LIMITED TO, REFERENCE DESIGNS AND THE DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL
FAULTS." TI DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT
NOT LIMITED TO ANY EPIDEMIC FAILURE WARRANTY OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADE
SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS.

6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS SHALL BE

CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY OTHER INDUSTRIAL OR
INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD PARTY, TO USE THE
EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY INVENTION, DISCOVERY OR
IMPROVEMENT, REGARDLESS OF WHEN MADE, CONCEIVED OR ACQUIRED.

7.

USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS.

USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS

LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,
EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY
HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS. THIS OBLIGATION SHALL APPLY
WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY OTHER LEGAL
THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED.

Summary of Contents for DS250DF230EVM

Page 1: ...outing complexity and BOM cost The advanced equalization features of the DS250DF230 include a low jitter 3 tap transmit finite impulse response FIR filter an adaptive continuous time linear equalizer...

Page 2: ...evel Page Capture Illustrating the Different Block Select Options 7 6 Low Level Page Capture After Selecting Access to an Individual Register 7 7 Eye Monitor Page for DS250DF230 Profile 8 8 EEPROM Pag...

Page 3: ...as shown below The EVM has an on board 3 3V to 2 5V regulator to supply the Retimer with the required 2 5V Make sure multiple jumpers are used on header J10 Figure 1 DS250DF230EVM Showing Connections...

Page 4: ...ro controller I2C pins are connected to the retimer I2C pins J35 EN_SMB jumper for retimer 1 J29 J31 ADDR0 and ADDR1 jumpers for retimer 1 2 Software Description 2 1 Setup The one time procedure for i...

Page 5: ...Go to Device tab and choose Manage Devices 2 Click on icon and then select the DS250DF230 device model 3 Fill in the New Device Name DS250DF230 is recommended 4 Select the slave address as configured...

Page 6: ...hown below The user may click Read All to load the data in each register from the device to the Register Map The user may access the Shared Global or Channel registers via Block Select To Read a regis...

Page 7: ...2019 Submit Documentation Feedback Copyright 2018 2019 Texas Instruments Incorporated DS250DF230EVM User s Guide Figure 5 Low Level Page Capture Illustrating the Different Block Select Options Figure...

Page 8: ...r a given channel if CDR Locked is indicated The EOM_SEL_VRANGE pull down allows the user to adjust the vertical scale for eye plots The user may perform a Single Capture of eye monitor plot or select...

Page 9: ...control settings are described in greater detail below Common Channel If this box is checked all channels receive the same configuration Different devices can receive different configurations but with...

Page 10: ...ase Header of devices 8 Bytes device Address Header of slots 66 Bytes slot Data EEPROM Size 256 Bytes EEPROM Size 3 Bytes Base Header of devices 12 Bytes device Address Header of slots 66 Bytes slot D...

Page 11: ...is independent from the others EQ Boost This field displays the Rx Continuous Time Linear Equalizer CTLE boost value as a four digit figure Each digit corresponds to one of the four CTLE stages and ea...

Page 12: ...F230 device to any of the four available adapt modes To do so the user should click on the desired adapt mode then click Apply to Channel to configure a specific retimer channel Alternatively the user...

Page 13: ...tch The cross point tab allows the user to easily configure the 2x2 cross point implemented for each of the adjacent channel pairs of the DS250DF230 retimer With the Pair Select pull down the user can...

Page 14: ...8A August 2018 Revised September 2019 Submit Documentation Feedback Copyright 2018 2019 Texas Instruments Incorporated DS250DF230EVM User s Guide Figure 12 Cross Point Tab Default Mode Selected Figure...

Page 15: ...ay the mode that the retimer is currently set to along with the data rate setting and also the divider setting in the case of Manual Mode Standard Mode allows the user to program the retimer rate sub...

Page 16: ...l then see the manual mode input fields become adjustable Select the desired divider setting from the Divider Configuration pull down Select divide by 1 when data rate 13 Gbps Select divide by 2 when...

Page 17: ...ftware Description 17 SNLU238A August 2018 Revised September 2019 Submit Documentation Feedback Copyright 2018 2019 Texas Instruments Incorporated DS250DF230EVM User s Guide Figure 16 CDR Tab Manual M...

Page 18: ...ursor and post cursor equalization ratios Figure 17 TX FIR Tab Upon landing on the TX FIR tab the page will display the current decimal values and polarity for the main cursor post cursor and pre curs...

Page 19: ...the High Level page allows the user to configure the PRBS generator or Checker functions on any of the channels of the DS250DF230 retimer To enable PRBS Generator on a channel Select the desired chan...

Page 20: ...e Period Set pull down to Infinite if it desired to run extended duration test without time limit If Finite period is desired set the pull down to Finite and enter the desired test duration via the Ho...

Page 21: ...R is in locked the CDR lock indicator on the page will turn green and display CDR locked 3 Check the Horizontal Eye Opening HEO and Vertical Eye Opening VEO displayed on the Device Status tab The user...

Page 22: ...TX amplitude 1200mVppd Victim TX FIR C 1 4 C 0 24 C 1 3 Adapt mode 2 Adapted RX CTLE 3 0 0 0 Adapted DFE 0x14 0x2 0x1 0x2 0x0 Figure 20 SDD21 Loss Characteristic of Example Test Case Results Error cou...

Page 23: ...above 0 1 These uses from Texas Instruments do not exceed 1 ton per year The SVHC s are listed on the table below Table 2 REACH Compliance SVHC Content Disclosure COMPONENT MANUFACTURER COMPONENT PART...

Page 24: ...lower cost cable assembly compared to the MXP 40 but the SI performance is very good and more than adequate for 25Gbps operation 2 84099607 MF53 1x8A_21MXP 11SK 305 MXP 40 cable assembly This cable as...

Page 25: ...t Documentation Feedback Copyright 2018 2019 Texas Instruments Incorporated Revision History Revision History NOTE Page numbers for previous revisions may differ from page numbers in the current versi...

Page 26: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Page 27: ...These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not in...

Page 28: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Page 29: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Page 30: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Page 31: ...e resources are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reprod...

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