SNLA299 August   2018 LMH0324 , LMH0397 , LMH1208 , LMH1218 , LMH1219 , LMH1297

 

  1.   LMH12xx MADI Compatibility Application Note
    1.     Trademarks
    2. 1 MADI Specification Requirements
      1. 1.1 MADI Transmitter Electrical Requirements
        1. 1.1.1 Line Driver Impedance
        2. 1.1.2 Mean Output Voltage
        3. 1.1.3 Maximum Output Voltage
        4. 1.1.4 Terminated Signal Rise and Fall Time
      2. 1.2 MADI Receiver Electrical Requirements
    3. 2 LMH12xx Device Family
      1. 2.1 LMH12xx Device Family
        1. 2.1.1 LMH1297 MADI Modes of Operation
          1. 2.1.1.1 Dual MADI Cable Driver
          2. 2.1.1.2 SDI Bidirectional IO and MADI Cable Driver
          3. 2.1.1.3 Bidirectional MADI Port and SDI MADI Cable Driver
          4. 2.1.1.4 Bidrectional MADI Port and SDI Cable Driver
        2. 2.1.2 LMH1297 Device Family Register Changes for MADI Compatibility
        3. 2.1.3 LMH1297 Device Family Hardware Changes for MADI Compatibility
      2. 2.2 LMH1218 Device Family Hardware Changes to Support MADI Compatibility
      3. 2.3 LMH1219 Device Family Recommended Register Settings
    4. 3 Summary
    5. 4 References

2.1.3 LMH1297 Device Family Hardware Changes for MADI Compatibility

The LMH1297 device family meets SMPTE SDI slew rates. MADI requires 80%/20% rise/fall time to be within 1 nS to 3 nS. To meet this requirement, a 10-pF capacitor was added across SDI_OUT± or SDI_IO± as shown in Figure 5.

fbd2-snla299.gifFigure 5. LMH1297 Family Application Schematic
madi-transmit-waveform.pngFigure 6. LMH1297/LMH0397 MADI-Compatible Transmit Waveform
madi-eye-diagram.pngFigure 7. LMH1297/LMH0397 MADI-Compatible Output Eye Diagram
千亿体育app官网登录(中国)官方网站IOS/安卓通用版/手机APP | 米乐app下载官网（中国）|ios|Android/通用版APP最新版 | 米乐|米乐·M6（中国大陆）官方网站 | 千亿体育登陆地址 | 华体会体育（中国）HTH·官方网站 | 千赢qy国际_全站最新版千赢qy国际V6.2.14安卓/IOS下载 | 18新利网v1.2.5|中国官方网站 | bob电竞真人（中国官网）安卓/ios苹果/电脑版【1.97.95版下载】 | 千亿体育app官方下载(中国)官方网站IOS/安卓/手机APP下载安装 |