LAN8742A-CZ-TR

The LAN8742A/LAN8742Ai is a low-power 10BASE-T/100BASE-TX physical layer (PHY) transceiver with variable I/O voltage that is compliant with the IEEE 802.3 and 802.3u standards. The LAN8742A/LAN8742Ai supports communication with an Ethernet MAC via a standard RMII interface. It contains a full-duplex 10-BASE-T/100BASE-TX transceiver and supports 10 Mbps (10BASE-T) and 100 Mbps (100BASE-TX) operation. The LAN8742A/LAN8742Ai implements auto-negotiation to automatically determine the best possible speed and duplex mode of operation. HP Auto-MDIX support allows the use of direct connect or cross-over LAN cables. Integrated Wake on LAN (WoL) support provides a mechanism to trigger an interrupt upon reception of a perfect DA, broadcast, magic packet, or wakeup frame. The LAN8742A/LAN8742Ai supports both IEEE 802.3-2005 compliant and vendor-specific register functions. However, no register access is required for operation. The initial configuration may be selected via the configuration pins as described in Section 3.7, "Configuration Straps". Register-selectable configuration options may be used to further define the functionality of the transceiver. The LAN8742A/LAN8742Ai can be programmed to support wake-on-LAN at the physical layer, allowing detection of configurable Wake-up Frame and Magic packets.

Applications

• Set-Top Boxes
• Networked Printers and Servers
• Test Instrumentation
• LAN on Motherboard
• Embedded Telecom Applications
• Video Record/Playback Systems
• Cable Modems/Routers
• DSL Modems/Routers
• Digital Video Recorders
• IP and Video Phones
• Wireless Access Points
• Digital Televisions
• Digital Media Adapters/Servers
• Gaming Consoles
• POE Applications (Refer to Microchip Application Note 17.18)

Key features

• Single-Chip Ethernet Physical Layer Transceiver (PHY)
• Cable diagnostic support
• Wake on LAN (WoL) support
• Comprehensive flexPWR technology - Flexible power management architecture - LVCMOS Variable I/O voltage range: +1.8 V to +3.3 V - Integrated 1.2 V regulator with disable feature
• HP Auto-MDIX support
• Miniature 24-pin VQFN, RoHS-compliant package (4×4×0.9 mm height)
• High-performance 10/100 Ethernet transceiver - Compliant with IEEE802.3/802.3u (Fast Ethernet) - Compliant with ISO 802-3/IEEE 802.3 (10BASE-T) Loop-back modes - Auto-negotiation - Automatic polarity detection and correction - Link status change wake-up detection - Vendor specific register functions - Supports the reduced pin count RMII interface
• Power and I/Os - Various low power modes - Integrated power-on reset circuit - Two status LED outputs - May be used with a single 3.3 V supply
• Additional Features - Ability to use a low cost 25 MHz crystal for reduced BOM
• Packaging - 24-pin VQFN (4×4 mm), RoHS-compliant package with RMII
• Environmental - Commercial temperature range [0°C to +70°C] - Industrial temperature range (-40°C to +85°C)