KSZ8851-16 Datasheet | Micrel Semiconductor

KSZ8851-16/32MQL/MQLI Single-Port Ethernet MAC Controller with 8/16-Bit or 32-Bit Non-PCI Interface Rev. 2.0 General Description The KSZ8851M-series is a single-port controller chip with a non-PCI CPU interface and is available in 8/16-bit and 32-bit bus designs. This datasheet describes the 128-pin PQFP KSZ8851-16/32MQL for applications requiring highperformance from single-port Ethernet Controller with 8/16-bit or 32-bit generic processor interface. The KSZ8851M offers the most cost-effective solution for adding high-throughput Ethernet connectivity to traditional embedded systems. The KSZ8851M 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, 16-bit and 32-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 host buffer interface. The KSZ8851M is designed to be fully pliant with the appropriate IEEE 802.3 standards. An industrial temperature-grade version of the KSZ8851M, the KSZ8851MQLI is also available (see “Ordering Information section). Functional Diagram Link MD® Physical signal transmission and reception are enhanced through the use of analog circuitry, making the design more efficient and allowing for lower-power consumption. The KSZ8851M 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 bus timing. The KSZ8851M includes 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...