Microchip Technology LAN8710A 10/100 Base-T/TX Ethernet Transceiver
Microchip LAN8710A 10/100 Base-T/TX Ethernet Transceiver is a small-footprint, low-power Ethernet Physical Layer (PHY) with variable I/O voltage that is compliant with the IEEE 802.3-2005 standards. The LAN8710A supports communication with an Ethernet MAC via a standard MII (IEEE 802.3u)/RMII interface. It contains a full-duplex 10-BASE-T/100BASE-TX transceiver and supports 10Mbps (10BASE-T) and 100Mbps (100BASE-TX) operation. The LAN8710A 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.
The LAN8710A 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. Register-selectable configuration options may be used to further define the functionality of the transceiver.
Per IEEE 802.3-2005 standards, all digital interface pins are tolerant to 3.6V. The device can be configured to operate on a single 3.3V supply utilizing an integrated 3.3V to 1.2V linear regulator. The linear regulator may be optionally disabled, allowing usage of a high efficiency external regulator for lower system power dissipation.
The Microchip Technology LAN8710A 10/100 Base-T/TX Ethernet Transceiver is offered in a 32-pin QFN package. The LAN8710Ai variant features an extended -40°C to +85°C industrial operating temperature range.
Features
- Compliant with IEEE802.3/802.3u (Fast Ethernet)
- Compliant with ISO 802-3/IEEE 3 (10BASE-T)
- Loop-back modes
- Auto-negotiation
- Automatic polarity detection and correction
- Link status change wake-up detection
- Vendor specific register functions
- Supports both MII and the reduced pin count RMII interfaces
- Integrated power-on reset circuit
- Two status LED outputs
- Latch-Up Performance Exceeds 150mA per EIA/JESD 78, Class II
- May be used with a single 3.3V supply
- Ability to use a low cost 25Mhz crystal for reduced BOM
- Operating temperature range
- LAN8710A (commercial): 0°C to +70°C
- LAN8710Ai (industrial): -40°C to +85°C
- 32-pin QFN/SQFN (5mm x 5mm) package with MII and RMII
- RoHS compliant and lead-free
Applications
- HDTVs and set-top boxes
- Network printers and servers
- Gaming consoles
- Telecommunications
- POS terminals
- Industrial
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Block Diagram
Architectural Overview
Typical Application Circuit
