Texas Instruments LMH1297EVM, User Manual

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1 SNAU205A – March 2017 – Revised August 2019
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Copyright © 2017–2019, Texas Instruments Incorporated
LMH1297EVM Evaluation Board
User's Guide
SNAU205A – March 2017 – Revised August 2019
LMH1297EVM Evaluation Board
The LMH1297EVM is an evaluation module designed for high-speed performance and functional
evaluation of the Texas Instruments LMH1297 12G UHD-SDI 75-
Ω bidirectional I/O with integrated
reclocker. With this kit, users can quickly evaluate the cable reach and output signal integrity supported by
the LMH1297. High-performance edge-mount BNC connectors are used at the 75-
Ω port for the SDI_IO
and SDI_OUT signals, while 100- Ω differential input and output ports are routed to edge-mount SMA
connectors. These connectors facilitate connection to lab equipment or user systems for performance
evaluation. An onboard MSP430 MCU is included to support an optional SMBus or SPI serial control
interface when configuring the LMH1297 operating modes.
Contents
1 Overview
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2 Features
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3 Applications
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4 Ordering Information
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5 Setup
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5.1 Modes of Operation
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5.2 Software/Hardware Description and Setup
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5.3 Retimed Output at 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps, and 270 Mbps
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6 SigCon Architect LMH1297 GUI Profile
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6.1 Configuration Page
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6.2 Low Level Page
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6.3 High Level Page
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6.4 Eye Monitor Page
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7 Bill Of Materials
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8 Schematics
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9 EVM Layout
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List of Figures
1 LMH1297EVM
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2 LMH1297EVM Input and Output Pins
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3 Jumper Orientation for User Configuration
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4 LMH1297EVM CD Mode Default Setup for SMBus Operation With SigCon Architect
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5 LMH1297EVM EQ Mode Default Setup for SMBus Operation With SigCon Architect
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6 CD Mode at 11.88 Gbps, Measured at , Reclocked Output
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7 EQ Mode at 11.88 Gbps, Measured at OUT0±, Reclocked Output
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8 CD Mode at 5.94 Gbps, Measured at , Reclocked Output
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9 EQ Mode at 5.94 Gbps, Measured at OUT0±, Reclocked Output
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10 CD Mode at 2.97 Gbps, Measured at , Reclocked Output
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11 EQ Mode at 2.97 Gbps, Measured at OUT0±, Reclocked Output
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12 CD Mode at 1.485 Gbps, Measured at , Reclocked Output
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13 EQ Mode at 1.485 Gbps, Measured at OUT0±, Reclocked Output
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14 CD Mode at 270 Mbps, Measured at , Reclocked Output
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15 EQ Mode at 270 Mbps, Measured at OUT0±, Reclocked Output
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16 LMH1297EVM Configuration Page
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