MICROCHIP KSZ8841-PMQLI

The KSZ8841-PMQL is a single-port Fast Ethernet MAC chip with a 32-bit/33MHz PCI processor interface. Designed to be fully compliant with the IEEE 802.3u standard, the KSZ8841-PMQL is also available in an industrial temperature grade version of the KSZ8841-PMQL, the KSZ8841-PMQLI. 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 KSZ8841-PMQL is designed using a low-power CMOS process that features a single 3.3V power supply with 5V tolerant I/O. The KSZ8841-PMQL is a mixed signal analog/digital device offering Wake-on-LAN technology. Its extensive feature set includes management information base (MIB) counters and CPU control/data interfaces. The KSZ8841-PMQL includes a unique cable diagnostics feature called LinkMD. This feature calculates the length of the cabling plant and determines if there is an open/short condition in the cable. Accompanying software allows the cable length and cable conditions to be conveniently displayed. In addition, the KSZ8841-PMQL supports Hewlett Packard (HP) Auto-MDIX thereby eliminating the need to differentiate between straight or crossover cables in applications.

• Fully Compliant with the IEEE802.3u Standard
• Supports 10/100BASE-T/TX
• Supports IEEE 802.3x Full-Duplex Flow Control and Half-Duplex Backpressure Collision Flow Control
• Supports Burst Data Transfers
• 8 KB Internal Memory for RX/TX FIFO Buffers
• Early TX/RX Functions to Minimize Latency Through the Device
• Serial EEPROM Configuration
• Single 25MHz Reference Clock for Both PHY and MAC
• Fully Integrated to Comply with IEEE 802.3u Standards
• 10BASE-T and 100BASE-TX Physical Layer Support
• Auto-Negotiation: 10/100Mbps Full- and Half Duplex
• Supports IEEE 802.1Q Multiple VLAN Tagging
• On-Chip Wave Shaping: No External Filters Required
• Adaptive Equalizer
• Baseline Wander Correction
• Single Power Supply (3.3V) with 5V Tolerant I/O Buffers
• Enhanced Power Management Feature with Power-Down 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)
• Low-Power CMOS Design
• Commercial Temperature Range: 0℃ to +70℃
• Industrial Temperature Range: -40℃ to +85℃
• Available in 128-Pin PQFP
• Single Chip Ethernet Controller with IEEE 802.3u Support
• 32-bit/33MHz PCI Bus for Different Host Processor Interfaces
• Dynamic Buffer Memory Scheme - Essential for Applications such as Video over IP where Image Jitter is Unacceptable
• Microchip 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
• Enhanced Power Management Feature with Power-Down Feature

• Video Distribution Systems
• High-End Cable, Satellite, and IP Set-Top Boxes
• Video over IP
• Voice over IP (VoIP) and Analog Telephone Adapters (ATA)