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10/100/1000 Gigabit Switches

SW-015​

  • Rev 3: Standard revision -- Superseded by Rev 3B on February 25th, 2022.

  • Rev 3B: The following changes have been made (Rev 3B to become the standard revision for all affected products going forward from February 25th, 2022):

    • Bug Fix: The Ethernet switch chipset, KSZ9897, has a bug whereby in some scenarios when large amount of traffic is passed between 2 connected Ethernet switches, the switch drops the link and fails to re-establish the lost connection. Rev 3B resolves this issue.

    • Manufacturing Improvement: Magjack PCB vias have been increased in size to allow for better production.

    • Customer Improvement: Added a small microprocessor, which can enable Jumbo Packet support if required.

    • Supply: Due to sudden worldwide obsolescence of the 25MHz crystal in the current 7x5mm package used on the design, we redesigned for a more widely available 3x2 crystal package. This crystal package is expected to be widely available for 10+ years. The functional performance of the Ethernet switch product remains the same.

SW-514​

  • Rev 2: Internal Prototypes Only

  • Rev 3: Standard Revision

SW-115, SW-515, SW-615XX & SW-715​

  • Rev 3: Standard revision -- Superseded by Rev 3C on February 24th, 2022.

  • Rev 3B: Internal change, never publicly released.

  • Rev 3C: The following changes have been made (Rev 3C to become the standard revision for all affected products from February 24th, 2022. The functional performance of the Ethernet switch product remains the same):

    • Bug Fix: The Ethernet switch chipset, KSZ9897, has a bug whereby in some scenarios when large amount of traffic is passed between 2 connected Ethernet switches, the switch drops the link and fails to re-establish the lost connection. Rev 3B resolves this issue.

    • Manufacturing Improvement: Magjack PCB vias have been increased in size to allow for better production.

    • Customer Improvement: Added a small microprocessor, which can enable Jumbo Packet support if required.

    • Supply: Due to sudden worldwide obsolescence of the 25MHz crystal in the current 7x5mm package used on the design, we redesigned for a more widely available 3x2 crystal package. This crystal package is expected to be widely available for 10+ years. The functional performance of the Ethernet switch product remains the same.

SW-515 Rev 3C PCB layout Figure 5 - SW-115/515/615XX/715 Rev 3C PCB