FHS-AUG23-PG10+11_Layout 1 07/08/2023 11:07 Page 11
AUTOMATION & ROBOTICS
providing more flexibility on the choice of host processor to include ultra low power processors that do not have an integrated MAC. When upgrading an existing device to add Ethernet connectivity, a 10BASE-T1L MAC-PHY provides a route to reusing the existing processor and adding Ethernet connectivity via an SPI port, removing the requirement to move to a larger processor with an integrated MAC. For high performance applications where a field or edge device requires a high performance processor that may already have an integrated MAC, a 10BASE-T1L PHY with MII, RMII, and RGMII MAC interfaces allows a 10BASE-T1L PHY to be quickly developed. This is done by reusing existing MAC interface drivers to add Ethernet connectivity (see Figure 2).
INCREASED FLEXIBILITY FOR TOMORROW’S ETHERNET-CONNECTED PROCESS INSTALLATIONS With the availability of both 10BASE-T1L PHYs (ADIN1100) and 10BASE-T1L MAC-PHYs (ADIN1110), device architects now have increased flexibility to meet the requirements of tomorrow’s Ethernet-connected manufacturing installations. Ultra low power devices and high performance devices can be deployed on the same Ethernet network and comply with strict maximum power limitations for hazardous area use case requirements. 10BASE-T1L power switches and 10BASE-T1L field switches require robust, low power 10BASE-T1L PHYs to be used with Industrial Ethernet switches to deploy a trunk- and-spur network topology that provides both power and data over a single twisted pair cable, including hazardous area use cases. Field device connectivity requires both 10BASE-T1L PHYs and 10BASE-T1L MAC-PHYs to enable Ethernet connectivity to a wide range of field devices. Higher power field devices, including flow meters, will use a high performance processor, with an integrated MAC with a 10BASE-T1L PHY. Lower power field devices, including temperature sensors with an
TABLE 1. COMPARISON OF ADIN1100 PHY VS. ADIN1110 MAC-PHY ADIN1100 Part 10BASE-T1L PHY Interface Integrated MAC Supports Intrinsic Safe Power Consumption Auto-Negotiation Capability On-Chip FIFO MAC Filter (16 Entries) Prioritising of Traffic
IEEE 1588 Timestamp Support
Temperature Range Package MII, RMII, RGMII No Yes 39mW Yes No No No No –40°C to +105°C 40-lead LFCSP
ultra low power processor that does not have an integrated MAC, will use a 10BASE-T1L MAC- PHY for Ethernet connectivity via an SPI interface to the processor (see Figure 3).
COMPARISON OF 10BASE-T1L PHY AND 10BASE-T1L MAC-PHY KEY FEATURES The ADIN1110, ADI’s 10BASE-T1L MAC-PHY, enables lower power Ethernet connectivity via an SPI interface to a host processor with only 42mW of power consumption. The ADIN1110 supports the Open Alliance 10BASE-T1x MAC-PHY Serial Interface for full-duplex SPI communications at 25MHz clock speed. The ADIN1100, ADI’s 10BASE-T1L PHY, enables low power Ethernet connectivity via MII, RMII, and RGMII MAC interfaces to a host processor with only 39mW of power consumption - see Table 1 for a comparison of the ADIN1100 10BASE-T1L PHY and ADIN1110 10BASE-T1L MAC-PHY. Both products are based on 10BASE-T1L core
10BASE-T1L MAC-PHY SPI Yes Yes 42mW Yes
20kB receive/ 8kB transmit
Yes Yes Yes –40°C to +105°C 40-lead LFCSP
capability of a full-duplex, DC balanced, point- to-point communication scheme with PAM 3 modulation at a 7.5MBd symbol rate with 4B3T coding. 10BASE-T1L supports two amplitude modes: 2.4V peak-to-peak up to 1000m cable and 1.0V peak-to-peak at a reduced distance. The 1.0V peak-to-peak amplitude mode means that this new physical layer technology can also be used in the environment of explosion proof (Ex-proof) systems and meets the strict maximum energy restrictions.
IN SUMMARY
A 10Mb Ethernet physical layer (10BASE-T1L) combined with power delivery (Engineered Power/PoDL/SPoE) on two wires, up to 1km, will enable new types of Ethernet-connected devices that generate higher value insights that are now more accessible via a converted IT/OT Ethernet network. These new insights will drive higher productivity and reduce energy consumption in process and factory automation applications. In building automation applications these new insights will enable higher levels of energy efficiency, safety, and comfort. As a result, a 10BASE-T1L MAC-PHY will accelerate lower power device availability. For more information on the ADI Chronous
portfolio of Industrial Ethernet solutions and how they are accelerating the transition to real-world Industrial Ethernet networks, please visit
analog.com/chronous.
Figure 3. Trunk-and-spur network topology for process automation with 10BASE-T1L MAC-PHY and 10BASE-T1L PHY
.
Analog Devices
www.analog.com
FACTORY&HANDLINGSOLUTIONS | JULY/AUGUST 2023 11 ADIN1110
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