KSZ8851-16MLL Datasheet | Micrel Semiconductor

Description The KSZ8851M-series is a single-port controller chip with a non-PCI CPU interface and is available in 8-bit and 16bit bus designs. This datasheet describes the 48-pin LQFP KSZ8851-16MLL for applications requiring highperformance from a single-port Ethernet controller with an 8-bit or 16-bit generic processor interface. The KSZ885116MLL offers the most cost-effective solution for adding high-throughput Ethernet connectivity to traditional embedded systems. The KSZ8851-16MLL is a single chip, mixed analog/digital device offering wake-on-LAN technology for effectively addressing fast Ethernet applications. It consists of a fast Ethernet MAC controller, an 8-bit or 16-bit generic host processor interface, and incorporates a unique, dynamic memory pointer with 4-byte buffer boundary and a fully utilizable 18KB for both TX (allocated 6KB) and RX (allocated 12KB) directions in the host buffer interface. The KSZ8851-16MLL is designed to be fully pliant with the appropriate IEEE 802.3 standards. An industrial temperature-grade version of the KSZ8851-16MLLI and a qualified AEC-Q100 automotive version of the KSZ885116MLLU are also available (see the Ordering Information section). Link MD® Physical signal transmission and reception are enhanced through the use of analog circuitry. This makes the design more efficient and allows lower-power consumption. The KSZ8851-16MLL is designed using a low-power CMOS process that features a single 3.3V power supply with options for 1.8V, 2.5V, or 3.3V VDD I/O. The device includes an extensive feature set that offers management information base (MIB) counters and CPU control/data interfaces with single shared data bus timing. The KSZ8851-16MLL includes a unique cable diagnostics feature called Link MD®. This feature determines the length of the cabling plant and also ascertains if there is an open or short condition in the cable. Acpanying software enables the cable length and cable conditions to be conveniently displayed. In...