TI LMH1218低功耗视频电缆驱动解决方案

TI公司的LMH1218是集成了reclocker的低功耗视频电缆驱动器,驱动和SMPTE-SDI, SMPTE 2022-5/6, 10GbE以太网和DVB-ASI标准兼容的视频数据,支持11.88Gbps速率,适用于超高清视频4K/8K应用,单电源2.5V工作,主要用在UHDTV/4K/8K/HDTV/SDTV视频, 数字视频路由器和交换, 数字视频处理和编辑, DVB-ASI和分布放大器, SMPTE 2022-5/6 10GbE以太网.本文介绍了LMH1218主要特性,功能框图, SPI模式和SMBus模式配置图以及评估板LMH1218EVM主要特性,电路图,材料清单和PCB布局图.
The LMH1218 is a low-power cable driver with integrated reclocker to drive serial video data compatible to SMPTE-SDI, SMPTE 2022-5/6, 10GbE Ethernet, and DVB-ASI standards. The LMH1218 supports up to 11.88 Gbps to enable Ultra High Definition Video for 4K/8K applications. With 75-Ω and 50-Ω transmitter outputs, the LMH1218 enables multiple media options such as coax, fiber, and FR-4 PCB.
The integrated 2-to-1 MUX on the input of the LMH1218 enables selection between two video sources, while the programmable equalizer compensates for the PC board loss to extend signal reach. With a wide range clock-and-data recovery (CDR) circuit, the on-chip reclocker automatically detects and locks to serial data from 270 Mbps to 11.88 Gbps without the need for an external reference clock and loop filter component, thereby simplifying board design and lowering system cost. The reclocked serial data can be routed to either the 75-Ω or 50-Ω transmitter output, or both simultaneously (1-to-2 fanout mode). The output voltage swing is compatible to SFF-8431 (SFP+), ST-2082/1 (Proposed), SMPTE 424M, 344M, 292M, and 259M standards.
A non-disruptive eye monitor allows for real-time measurement of serial data to simplify system startup or field tuning. The LMH1218 can be programmed using SPI or SMBus Interface.
LMH1218主要特性:
Supports ST-2082 (Proposed), ST-2081 Proposed), SMPTE 424M, 344M, 292M, 259M, DVB-ASI, SFF-8431 (SFP+) and 10GbE Ethernet for SMPTE 2022-5/6
Locks to rates 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps, or Divided by 1.001 sub...