• We’ve reported on 10BASE-T1S and 10BASE-T1L Single Pair Ethernet (SPE) chips fromMicrochipandAnalog Devicesin the past, which support Ethernet communication over a single twisted-pair cable. • But those chips integrate a full Ethernet PHY or MAC-PHY inside the device. • NXP takes a different approach with their TJA1410 (automotive) and TJF1410 (industrial) Physical Medium Dependent (PMD) transceivers. • These new PMDs separate the analog physical layer from the digital Ethernet logic. • By integrating the digital portion of the PHY into the host microcontroller or switch, the TJA1410 and TJF1410 only need to handle the essential analog functions for transmitting and receiving signals over the physical medium. • They communicate with the host via a 3-pin OPEN Alliance (OA) interface.

Article Summaries:

  • We’ve reported on 10BASE-T1S and 10BASE-T1L Single Pair Ethernet (SPE) chips from Microchip and Analog Devices in the past, which support Ethernet communication over a single twisted-pair cable. But those chips integrate a full Ethernet PHY or MAC-PHY inside the device. NXP takes a different approach with their TJA1410 (automotive) and TJF1410 (industrial) Physical Medium Dependent (PMD) transceivers. These new PMDs separate the analog physical layer from the digital Ethernet logic. By integrating the digital portion of the PHY into the host microcontroller or switch, the TJA1410 and TJF1410 o

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