IEEE 1588v2 over Ethernet IC targets industrial networks
The KSZ84xx platform supports both centralized and distributed network topologies. A full complement of Precise Timing Protocol timing modes are provided, including the Transparent Clock (TC) introduced in IEEE 1588v2, along with a range of host interfaces capable of interfacing to a wide range of CPUs. The 10x10mm KSZ84xx switches are particularly well-suited for distributed network topologies which are preferred for Industrial Ethernet networks. The ICs feature a hardware-oriented architecture that reduces the synchronization and communications processing demands on the Host CPU.
Such features as Source Addressing, One-Step TC corrections, and Bypass mode facilitate both Ring and Linear topologies. By integrating the IEEE 1588 PTPv2 time stamping as close to the physical layer as possible, sub-100ns synchronization performance has been demonstrated. Operational power consumption is less than 300mW and advanced power management features complement the inherently low-power Physical Layer design, including Energy Efficient Ethernet (EEE- IEEE 802.3az), Wake on LAN (WoL), Energy Detect Power Down (EDPD), and software power down. Standby power savings of over 95 percent are achievable, making the new platform the lowest power, most energy-efficient IEEE 1588v2/Ethernet solution available, according to the manufacturer.
The product family consists of the KSZ8463 3-port switch with MII/RMII interface, the KSX8462 3-port switch with generic host interface and the KSX8441 controller with generic host interface. Micrel also intends to offer a pre-qualified Precise Timing Protocol software stack, which has been integrated with the driver and optimized to exploit the KSZ84xx architecture. Source code is available under license. The ICs are currently sampling with volume production expected in the first quarter of 2012.
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