GS2961A
GS2961A 是一款多速率 SDI 集成均衡器接收器，包括依据 SMPTE 425M（A 级和 B 级）、SMPTE 424M、292M 和 SMPTE 259M-C 的全面 SMPTE 处理。
The SMPTE processing features can be bypassed to support signals with other coding schemes.
GS2961A 集成了 Gennum 的下一代先进自适应电缆均衡技术，可实现前所未有的电缆长度和抖动容限。它具有直流恢复功能，可补偿 SMPTE 病态信号的直流含量。
本器件具有集成式时钟恢复器，内置 VCO 和 0.7UI 的高输入抖动容限 (IJT)。它提供了串行数字环通输出，可配置为输出时钟恢复或非时钟恢复串行数字数据。串行数字输出可连接至外部电缆驱动器。
The device operates in one of four basic modes: SMPTE mode, DVB-ASI mode, Data-Through mode or Standby mode.
在 SMPTE 模式下，GS2961 执行 SMPTE 解扰和 NRZI 到 NRZ 解码和字对齐。基于行的 CRC 错误、行号错误、TRS 错误以及辅助数据校验和错误都可以被检测到。GS2961A 还提供辅助数据提取。它提取整个辅助数据包，并将其写入主机可访问的寄存器。其他处理功能包括 H:V:F 定时提取、亮度和色度辅助数据指示、视频标准检测以及 SMPTE 352M packet 检测和解码。所有处理功能都是可选的，并可通过主机接口启用或禁用。
功能
- Integrated adaptive cable equalizer
- Integrated Reclocker with low phase noise, integrated VCO
- Belden 1694A 电缆典型均衡电缆长度：
- 150m at 2.97Gbps
- 速率为 1.485Gbps 时长度为 230m
- 440m at 270Mbps
- 运行速率为 2.97 Gbps、2.97/1.001 Gbps、1.485 Gbps、1.485/1.001 Gbps 和 270 Mbps
- 支持 SMPTE 425M（A 级和 B 级）、SMPTE 424M、SMPTE 292M、SMPTE 259M-C 和 DVB-ASI
- 串行数字时钟恢复或非时钟恢复输出
- Ancillary data extraction
- 可选从 SMPTE 425M B 级到 A 级的 1080p 50/60 4:2:2 10 位转换
- 并行数据总线可选 20 位或 10 位
- 全面的错误检测和纠正功能
- 输出 H、V、F 或 CEA 861 定时信号
- 1.2V digital core power supply, 1.2V and 3.3V analog power supplies, and selectable 1.8V or 3.3V I/O power supply
- GSPI 主机接口
- -20°C 至 +85°C 工作温度范围
- 低功耗运行（典型功耗为 515mW）
- 小型 11 mm x 11 mm 100 焊球 BGA 封装
- 无铅且符合 ROHS 标准
- 监视器
- 摄像机控制单元
- 多画面显示器
- Production switchers
- 主控切换器
- VTR
- 视频服务器
- 编码器/解码器
- 上/下/交叉变频器
- 音频解嵌器
- 格式检测器
- 测试和测量设备
应用
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资源
To see more videos Videos
In this fifth and final installment of the BlueRiver applications blog series, we’ll look at how two Semtech products lines – Semtech’s BlueRiver® ASIC platform for Pro AV and SDVoE™, and broadcast Serial Digital Interface (SDI) – can enable a unique set of “SDI-over-IP” products and applications.
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Whether you are watching an action replay of a baseball game on a giant screen at a stadium, a movie on your large-screen TV or streaming a video on your laptop computer, a high-quality audiovisual (AV) experience is always expected. Ultra-High-Definition Serial Digital Interface (UHD-SDI) and High-Definition Multimedia Interface (HDMI) are two standards for digital AV transmission. UHD-SDI standardizes the transmission of uncompressed and unencrypted digital AV signals over coaxial or fiber optic cables. HDMI is a digital interface for transmitting high-definition, high-speed digital multi-track audio and uncompressed video signals from HDMI-compliant sources to AV displays. Even though they both can transport ultra-high-definition AV signals from a source to a display, HDMI is preferred to connect consumer gadgets such as computers, gaming consoles, Blu-ray/DVD players, televisions, projectors, etc. UHD-SDI is preferred for high-end applications such as professional indoor/outdoor video production and television broadcasts because it supports long-range transmission and a rugged connection with the help of a physical lock mechanism at each end of the cable. UHD-SDI coaxial cable can transfer signals up to 300 feet, whereas HDMI cables struggle with excessive signal degradation even within 50 feet. These two interfaces can be used together via an HDMI-SDI or SDI-HDMI converter. For example, as shown in figure 1, an HDMI display would be used for confidence monitoring of an SDI stream to avoid the need to use specially calibrated SDI-specific displays.
Circuit Protection for HDMI-SDI/SDI-HDMI…
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