GX3146
The GX3146 is a low-power, high-speed 146 x 146 crosspoint switch, with robust signal conditioning circuits for driving and receiving high-speed signals through backplanes.
The device consumes as low as 18W of power (typical) with all channels operational, and features sophisticated, dynamically scalable power management. Unused portions of the core are automatically turned off without affecting the operation of the remaining channels.
The signal conditioning features of the GX3146 include per-input programmable equalization and per-output programmable de-emphasis. The input equalizer removes ISI jitter—typically caused by PCB trace losses—by opening the input data eye in applications where long PCB traces and connectors are used. There are four settings available for the input equalizer, allowing flexibility in adjusting the equalization level on a per-input basis.
Output de-emphasis capability provides a boost of the high-frequency content of the output signal, such that the data eye remains open after passing through a long interconnect of PCB traces and connectors. There are four de-emphasis settings that can be enabled on a per-output basis.
System test features, such as a programmable PRBS pattern generator and checker, can be applied to any input or output of the device as appropriate.
The pattern generators can be individually applied to any output of the device without impacting the normal operation of any other channel. Broadcast and multicast features are also available.
The chip features eight independent strobe lines, UPDATE_EN[7:0], which are used to determine the timing of the output updates. Any output can be linked to any strobe.
Features
- 146 x 146 crosspoint switch architecture supporting broadcast and multi-cast modes
- Supports data rates from DC to 3.5Gb/s
- Low power consumption: 18W (all channels active)
- Sophisticated dynamic on-chip power management control
- Multiple user-programmable power-down saving modes
- Independent programmable input trace equalization to reduce deterministic jitter (ISI)
- Independent programmable output de-emphasis for driving long board traces
- High-speed video-optimized control for multi-format applications
- Built-in system test features with on-chip PRBS Tx generators and Rx analyzers
- 2.5V analog core voltage, 1.8V digital core voltage
- Input and output voltages support either 1.2V or 2.5V CML
- JTAG-controlled boundary scan
- Selectable parallel/serial (SPI) host interface
- 50mm x 50mm BGA (2377 ball)
- Operating temperature range: 0°C to +85°C
- RoHS compliant
Large m x n cascaded routers/switch fabrics for:
- Professional broadcast applications
- Enterprise and carrier applications
- High-speed automated test equipment
- 10GbE and InfiniBand networks
アプリケーション
Order Codes
- GX3146-CBE3: Lead-Free, RoHS Compliant, Tray-10 Pieces
Pb(Lead)-Free/RoHS-Green Info
Datasheets & Documentation
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関連情報
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スタジアムの巨大スクリーンで野球の試合のアクションのリプレイを視聴する場合でも、大画面テレビで映画を視聴する場合でも、ノートパソコンでビデオをストリーミングする場合でも、高品質のオーディオビジュアル (AV) 体験が常に期待されています。デジタルAV伝送には、超高精細シリアルデジタルインターフェイス (UHD-SDI) と高解像度マルチメディアインターフェイス (HDMI) の2つの規格があります。UHD-SDIは、同軸または光ファイバーケーブルを介した非圧縮・非暗号化のデジタルAV信号の伝送を標準化します。HDMI は、HDMI準拠のソースからAVディスプレイに高解像度、高速デジタルマルチトラックオーディオおよび非圧縮ビデオ信号を送信するためのデジタルインターフェイスです。どちらも超高精細AV信号をソースからディスプレイに転送できますが、コンピューター、ゲーム機、Blu-ray/DVDプレーヤー、テレビ、プロジェクターなどの消費者向け機器の接続にはHDMIが好まれます。UHD-SDIは、ケーブル両端の物理的なロック機構で長距離伝送と堅牢な接続をサポートするため、プロの屋内/屋外ビデオ制作やテレビ放送などのハイエンドアプリケーションに適しています。UHD-SDI同軸ケーブルは最大300フィートの信号を転送できますが、HDMIケーブルは50フィート以内でも過度の信号劣化が問題となります。これら2つのインターフェイスは、HDMI-SDIまたはSDI-HDMIコンバーターを使って併用できます。例えば、図1のように、HDMIディスプレイはSDIストリームの信頼性監視に使用でき、この場合、特別に調整されたSDI固有のディスプレイを使用する必要がなくなります。
Circuit Protection for HDMI-SDI/SDI-HDMI…
今すぐ読むI designed my first product using the Serial Digital Interface (SDI) back in 1996, and little did I know that this fledgling coax-based video interface standard would dominate my career for the next 20+ years. Back then, SDI was limited to carrying Standard Definition (SD) digital video at 270 Megabits per second (Mbps), but would evolve to higher and higher data rates to carry High Definition 720p, 1080i and 1080p, and most recently 4K Ultra High Definition (UHD) video, at cable lengths that were not thought possible. The convenience of a low cost single conductor coaxial copper cable, capable of carrying 4K video up to 100m has meant that SDI has become the de facto AV connectivity of choice in markets such as broadcast, Pro AV, medical and surveillance.
今すぐ読む