The LAN88730 is a compact 10/100 Base-T/TX Ethernet transceiver designed specifically for automotive applications. It features a single-chip Ethernet physical layer transceiver (PHY) that complies with IEEE 802.3 and 802.3u standards, ensuring reliable performance in automotive environments. The device supports both MII and RMII interfaces and includes HP Auto-MDIX for automatic detection and correction of cable connections. This transceiver operates within a flexible power management architecture, allowing for a variable I/O voltage range from +1.8 V to +3.3 V, and includes an integrated 1.2 V regulator. It is packaged in a small 32-pin VQFN form factor, measuring 5 x 5 mm, and is RoHS-compliant. The LAN88730 is rated for automotive grade temperatures, supporting operation from -40¬8C to +105¬8C. Target applications include diagnostic interfaces, fast software download interfaces, gateway service interfaces, and in-vehicle engineering development. The LAN88730 also features low power modes, automatic polarity detection, and link status change wake-up detection, making it suitable for various automotive networking needs.
The LAN88730 is a high-performance, low-power 10/100 Ethernet controller which incorporates the essential protocol requirements for operating an IEEE 802.3 10BASE-T and 802.3u 100BASE-TX compliant Ethernet node. It is specifically designed to meet the high reliability standards required by automotive applications, including on-board diagnostics and fast software download interfaces for central gateway and telematics modules, navigation systems, radio head units and connectivity devices. The LAN88730 offers increased access speed for diagnostics and software downloads when compared with the more traditional, slower speed interfaces that are typically used.
The LAN88730 provides a simple, digital interface via MII (IEEE 802.3u) to a standard MAC layer integrated in an embedded microcontroller. When built into an embedded device within the car, the chip can function as a network branch to the outside world, connecting the car to a personal computer, diagnostic tool or a complex Ethernet network in the repair shop.
The LAN88730 can be configured for either 10 or 100 Mbps Ethernet operation in full and half-duplex mode. To determine the best possible speed and duplex mode of operation, it automatically implements Auto-Negotiation.
HP Auto-MDIX is also supported and provides detection and correction of both direct connection and crossed Ethernet cabling.
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| Microchip Technology, Inc. | |
|---|---|
| Product Category | RF Transceivers |
| Product Number | LAN88730 |
| Product Name | 10/100 Base-T/TX Ethernet Transceiver for Automotive applications |
| Package Type | Surface Mount; ['VQFN'] |
