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EVM User's Guide: LMH1239EVM
LMH1239 Evaluation Module
Description
The LMH1239 is a long reach adaptive cable
equalizer with integrated reclocker, dual outputs, and
75Ω loop-through output. The device is designed
to equalize data transmitted over 75Ω coaxial cable
and operates across SMPTE data rates ranging from
125Mbps to 11.88Gbps.
Features
•
User configurable adaptive cable equalizer or
cable driver with integrated reclocker
•
Supports ST-2082-1(12G), ST-2081-1(6G),
ST-424(3G), ST-292(HD), and ST-259(SD)
•
Integrated reclocker locks to SMPTE video rates of
11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps or
divide-by-1.001 sub-rates and 270Mbps
•
Dual adaptive cable equalizer at 75Ω single-ended
input ports SDI_IN0± and SDI_IN1±
SNAU303 – MAY 2024
Submit Document Feedback
•
Dual 100Ω output driver with de-emphasis output
port OUT0± and OUT1±
•
Line-side reclocked 75Ω loop-through output on
port SDI_OUT±
•
Programmable by pin, SPI, or SMBus interface
•
Single supply operation: VDD = 2.5V ± 5%
•
-40°C to +85°C operation
•
High speed signal flow–thru pin-out package: 5mm
x 5mm 32-pin WQFN package
Applications
•
SMPTE compatible serial digital interface
•
UHDTV, 4K, 8K, HDTV,
•
Broadcast video
amplifiers, and
•
Digital video processing and editing
Copyright © 2024 Texas Instruments Incorporated
SDTV
video
routers, switches,
distribution
monitors
LMH1239 Evaluation Module
Description
1
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Table of Contents
Related Manuals for Texas Instruments LMH1239
Summary of Contents for Texas Instruments LMH1239
- Page 1 LMH1239 Evaluation Module • Dual 100Ω output driver with de-emphasis output Description port OUT0± and OUT1± The LMH1239 is a long reach adaptive cable • Line-side reclocked 75Ω loop-through output on equalizer with integrated reclocker, dual outputs, and port SDI_OUT±...
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Page 2: Kit Contents
Texas Instruments LMH1239 12G UHD long reach cable equalizer with integrated reclocker and input mux. With this kit, users can quickly evaluate the cable reach and output signal integrity supported by the LMH1239. High performance edge mount BNC connectors are used at the 75Ω port for the SDI_IN and SDI_OUT signals, while 100Ω... - Page 3 2. SPI Mode – Provides full access to the LMH1239 signal integrity and control settings with POCI, PICO, SCK, and CS pins. 3. SMBus Mode – Provides full access to the LMH1239 signal integrity and control settings via SDA, SCL, and GND pins. ADDR0 and ADDR1 pins are used for SMBus address strap.
- Page 4 The channel settings and controls are configurable in pin mode for the LMH1239 4-logic levels (L, R, F, H). The four logic levels correspond to the following voltages in Table 2-1.
- Page 5 NAME COMMENTS GND power supply 2.5V VIN power supply Enable pin for the LMH1239. Shunt Pin 1 and 2 for proper operation. Refer to ENABLE LMH1239 data sheet for detailed information. POCI Shunt Pin 1 and 2 to connect POCI signal to J8 for proper SPI mode operation.
- Page 6 2. Connect PC to LMH1239EVM with a USB-to-mini-USB cable through the mini-USB port located on J31. The LMH1239's control and signal integrity settings are programmable with SigCon Architect, a GUI which supports full register access through SMBus communication. For more information about SigCon Architect,...
- Page 7 Alternatively, the LMH1218EVM can be used as a 100Ω differential-to-75Ω single-ended converter. Then, the 75Ω OUT0+ of the LMH1218 can be used as an input to the SDI_IN0+ of the LMH1239. b. The output signal on J20, J21, J23 and J25 can be connected with matched 100Ω differential cables to a high-speed scope to view the output eye diagram.
- Page 8 The output signal on J32 can be connected with 75Ω coax cable to a video pattern analyzer. Figure 2-4. LMH1239EVM SDI_OUT and SDI_IN1 Enabled for SMBus Operation LMH1239 Evaluation Module SNAU303 – MAY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 9 Hardware Design Files 3 Hardware Design Files 3.1 Schematics Figure 3-1 shows the schematic for LMH1239EVM. Figure 3-1. LMH1239EVM Schematic Page SNAU303 – MAY 2024 LMH1239 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
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Page 10: Additional Information
Figure 3-2. LMH1239EVM Bottom Layer 4 Additional Information 4.1 Trademarks All trademarks are the property of their respective owners. 5 Related Documentation • LMH12x9 data sheet, SNOSDC1 LMH1239 Evaluation Module SNAU303 – MAY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... - Page 11 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 12 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
- Page 13 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
- Page 14 www.ti.com 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.
- Page 15 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2023, Texas Instruments Incorporated...
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Page 16: Important Notice
TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2024, Texas Instruments Incorporated...
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