For devices that need to transmit many streams at the same time, you really want hardware support in the ethernet interface to assist in scheduling the time-sensitive packets for transmission. IEEE Std 802.1Q-2011 Clause 34, "Forwarding and Queuing for time-sensitive streams (FQTSS)" is important to implement on Talkers. The PHY latencies are typically different for 100baseT and GigE and different for TX and RX.Ĩ02.1AS needs timestamping of Pdelay, PdelayFollowUp, PdelayRequest, PdelayRequestFollowUp, Sync, and FollowUp messages for both directions.ġ.10 Can FQTSS be implemented in pure software?
#Ethernet status says i have 1gbps. only getting 1.8 software#
Many ethernet hardware systems provide timestamps instead at the MAC level which means your software needs to compensate for the PHY latencies for your specific PHY. These timestamps need to represent the time that the packet hit the wire. You need to have the support in the ethernet hardware to provide timestamps of specific types of both incoming and outgoing packets. If your device supports 802.1AS then it will provide AVB quality synchronization better than the default 1588v2 profile. I have seen one ethernet chip that says that but only timestamps incoming packets, not outgoing packets.Ĩ02.1AS has no options like that. So there is no clear definition of what “1588-2008 capable hardware” means. Profiles of 1588v2 are not necessarily compatible or even require the same hardware.įor instance, once profile of IEEE 1588v2 is used for synchronization of Cellular Telephone towers and that profile has very different hardware and protocol requirements compared to the default 1588v2 profile seen in generic switches, and is different again compared to the profile used in industrial switches. IEEE 1588v2 is a framework for time synchronization. Give us a call at 80 – if we don’t have it in stock, we’ll make it for you.īelow is a chart that shows the capabilities of each HDMI Cable version.1.9 My device's ethernet port says it supports IEEE 1588.
HDMI Cables come in a wide assortment of configurations. MUL-HDMI-2.0-1.5M-MA-MA-HS-30 – v2.0 High Speed HDMI Cable, 1.5 Meter, with Ethernet Multicom stock a large supply of High Speed HDMI Cables, both with and without Ethernet: Below are just a few of the features we think are inportant: HDMI 2.0 supports many new features to take your A/V entertainment to a new and exciting level. Features that were added by the HDMI 2.0 specification:
It’s the A/V and Data equipment that has these features – the HDMI cable merely has the capability to support them. Keep in mind that installing a cable supporting HDMI 2.0 features does not give your existing devices with previous HDMI specifications the ability to experience 4K x 2K resolution, 3D, audio return or Ethernet. High Speed with Ethernet (HS with Ethernet).Per the HDMI spec, only four HDMI cable types exist: Version 2.0 is the latest version of the HDMI specification, as issued by HDMI Licensing, LLC.
As high definition A/V technology continues to advance, the specification for HDMI equipment and cabling is continually updated to ensure reliability and maximum performance.
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