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Point to Point Matrix Switching

Semiconductor Solutions for Point-to-Point Matrix Switching

Semtech’s AVX technology is the perfect replacement for the incumbent point-to-point matrix switch connectivity, HDBaseT. AVX provides true 4K60 support using standard IEEE physical interfaces and protocols, ensuring the best reach and noise immunity performance over standard copper category cabling. Where current extended reach matrix switch connectivity is limited to HD, this has prompted the move to IP based systems to support 4K, but AV-over-IP is not always the ideal choice for some applications. For example, in-room connectivity requiring only the switching of up to four sources to wall-mounted displays and a ceiling-mounted projector only requires a simple matrix switch. The AVX-based 4x4 matrix switch application diagram below illustrates this example using low cost AVX100 devices to extend and switch HDMI over copper category cable, such as Cat-6a.

Figure 1. AVX-based 4x4 matrix switch application diagram using low cost AVX100 devices to extend and switch HDMI over copper category cable

AVX for KVM Matrix Switching

As a point-to-point connectivity solution, AVX devices do not distribute AV content over an IP network. However, AVX devices provide a 1G Ethernet interface which can be connected to the same network as the SDVoE API server. The API server will discover all AVX endpoints, including those connected remotely across the 10G AVX Link which are not connected to the network. This is illustrated in the simple 2x2 AVX matrix switch system diagram example below.

As shown by the red arrow in the diagram, client software can monitor and control AVX devices, both local to the matrix switch and remotely, via the AVX Link. As mentioned earlier, AVX still uses standard IP protocol between devices across the AVX Link. Other servers may also exist on the same network to intercept USB traffic generated by USB devices connected to remote AVX endpoints for advanced KVM applications, such as single user control of multiple hosts. Thanks to the flexibility of the SDVoE API, any software developed for AVX can be repurposed or reused as-is for AVP-based solutions, significantly reducing development costs and providing end-users with a flexible, common control set across both point-to-point AV extension and SDVoE AV-over-IP systems.

Figure 2. 2x2 AVX matrix switch system diagram: client software can monitor and control AVX devices, both local to the matrix switch and remotely, via the AVX Link.

Looking for an SDVoE approach to matrix switching? Explore Semtech’s award-winning BlueRiver AV-over-IP chipsets.

Inside the Box with AVX100: A Simple & Cost-Effective Point-to-Point Matrix Switch Solution

MCUHD MI P ort Swi t ch F l a sh SPIXFIMDIO T MDS HD MI Input A VX Link I2 C 25 Mhz

Figure 3: Semtech’s AVX100 AV Extender can be used to transmit up to 4K60 video over 100m of Cat-6a standard copper category cabling.

For the most cost-effective point-to-point matrix switch solution, providing the lowest end-to-end latency performance, Semtech’s AVX100 AV Extender can be used to transmit up to 4K60 video over 100m of Cat-6a standard copper category cabling. When paired with an industry standard 10GBaseT PHY, only a handful of core components are needed to implement the complete AVX Transmitter solution.

Similarly, the AVX100 can be used to power the AVX Receiver, providing an end-to-end solution with sub-millisecond latency for high performance matrix switch applications using copper category cabling. As a single chip solution for both Transmitter and Receivers, the AVX100 can also be dynamically switched between Transmitter and Receiver operation, allowing single hardware designs to be configurable at install.

MCUHD MI P ort Swi t ch U SB PHY F l a sh SPIXFIMDIO T MDS HD MI Output U SB HID A VX Link I2 C PLL25 Mhz

Figure 4: AVX100 is also capable of dynamic switching between transmitter and receiver operation.

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