Fast Ethernet controller sports SPI interface - Embedded.com

Fast Ethernet controller sports SPI interface

San Jose, Calif.—Micrel Inc. has launched the KSZ8851, a single-port embedded controller chip with 8/16/32-bit and SPI host interfaces.

The high throughput device is pin compatible with Micrel's KSZ8841 and KSZ8842 product families and ideal for a wide variety of Ethernet applications in the IPSTB, VoIP, and industrial Ethernet markets.

The KSZ8851 integrates a Fast Ethernet MAC/PHY with an 8/16/32-bit generic host processor interface and SPI interface. The device has 18KB of internal buffer memory shared between the RXQ and TXQ. The buffer memory on the receive queue is 12KB, while the buffer memory for the transmit queue is 6KB. Pin compatible with Micrel's existing KSZ8841MQL and KSZ8842MQL families, the device offers performance at 80-Mbit/s or higher. The controller supports both Big-Endian and Little-Endian processors as well as IPv4/IPv6 checksum generation and checking. These features reduce CPU usage and improve overall system performance.

The KSZ8851 also gives designers an enhanced power management feature with energy detect mode, programmable IO options of 3.3V/2.5V/1.8V and an industrial temperature range of -40°C to +85°C. The device comes in a variety of package options, including 128-pin PQFP, 48-pin LQFP and 32-pin QFN.

Pricing: $4 for 1,000-unit quantities.
Availability: Production quantities in third quarter of 2008.
Datasheet: Click here.

Micrel Inc., www.micrel.com

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