MICROCHIP KSZ8841-16MVLI

The KSZ8841M 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 8KB for both TX and RX directions in host buffer interface. The KSZ8841M is designed to be fully compliant with the appropriate IEEE 802.3 standards. An industrial temperature-grade version of the KSZ8841M, the KSZ8841MVLI, also can be ordered. 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 KSZ8841M is designed using a low-power CMOS process that features a single 3.3V power supply with 5V tolerant I/O. It has an extensive feature set that offers management information base (MIB) counters and CPU control/data interfaces. The KSZ8841M includes a unique cable diagnostics feature called LinkMD. This feature determines the length of the cabling plant and also ascertains if there is an open or short condition in the cable. Accompanying software enables the cable length and cable conditions to be conveniently displayed. In addition, the KSZ8841M supports Hewlett Packard (HP) Auto-MDIX thereby eliminating the need to differentiate between straight or crossover cables in applications.

• Single chip Ethernet controller with IEEE802.3u support
• Supports 10BASE-T/100BASE-TX
• Supports IEEE 802.3x full-duplex flow control and half-duplex backpressure collision flow control
• Supports burst data transfers
• 8KB internal memory for RX/TX FIFO buffers
• Early TX/RX functions to minimize latency through the device
• Optional to use external serial EEPROM configuration for both KSZ8841-16MQL and KSZ8841-32MQL
• Single 25MHz reference clock for both PHY and MAC
• Fully integrated to comply with IEEE802.3u standards
• 10BASE-T and 100BASE-TX physical layer support
• Auto-negotiation: 10/100Mbps full and half duplex
• Adaptive equalizer
• Baseline wander correction
• Single power supply (3.3V) with 5V tolerant I/O buffers
• Enhanced power management feature with powerdown feature to ensure low-power dissipation during device idle periods
• Comprehensive LED indicator support for link, activity, full/half duplex, and 10/100 speed (4 LEDs) – User programmable
• Low-power CMOS design
• Commercial Temperature Range: 0℃ to +70℃
• Industrial Temperature Range: -40℃ to +85℃
• Available in 128-pin PQFP and 100-ball LFBGA (128 pin LQFP optional)
• Dynamic buffer memory scheme – Essential for applications such as Video over IP where image jitter is unacceptable
• Flexible 8-bit, 16-bit, and 32-bit generic host processor interfaces
• Micrel LinkMD cable diagnostic capabilities to determine cable length, diagnose faulty cables, and determine distance to fault
• Wake-on-LAN functionality – Incorporates Magic Packet, network link state, and wake-up frame technology
• HP Auto MDI-X crossover with disable/enable option
• Ability to transmit and receive frames up to 1916 bytes

• Video Distribution Systems
• High-end Cable, Satellite, and IP set-top boxes
• Video over IP
• Voice over IP (VoIP) and Analog Telephone Adapters (ATA)
• Industrial Control in Latency Critical Applications
• Motion Control
• Industrial Control Sensor Devices (Temperature, Pressure, Levels, and Valves)
• Security and Surveillance Cameras