Microchip Technology EVB-LAN8770-RMII™ Evaluation Board

Microchip Technology EVB-LAN8770-RMII™ Evaluation Board is a plug-in card that interfaces directly with a mating host processor such as the SAMA5D3 Ethernet Development System (ESD) board. This board features the LAN8770, a highly integrated networking device that incorporates a 100BASE-T1 Physical Layer Transceiver (PHY). The EVB-LAN8770-RMII evaluation board and the SAMA5D3 EDS board provide a flexible platform for the evaluation of basic PHY features via static Control Status Registers (CSR).

Features

TC10 wake/sleep capability
Compact EVB design to evaluate 100BASE-T1
Xplained ultra (latest) Reduced Media-Independent Interface (RMII) connector to interface with Ethernet MCU board including following board-to-board signals:
- RMII mode:
  - 50MHz reference clock from MCU to PHY
- MDC/MDIO
- PHY reset
- PHY interrupt
- WAKE_IN
  - Connect to GPIO on MCU
- ENABLE:
  - Connect to GPIO on MCU

LAN8770R 100BASE-T1 PHY
3.3V V_DD supply and TC10V battery supply
2-pin screw terminal connector for 100BASE-T1 physical interface
Single LED indicator for speed/link/activity status

Block Diagram

TI Webench Designer - Microchip Technology EVB-LAN8770-RMII™ Evaluation Board

Board Layout

Microchip Technology EVB-LAN8770-RMII™ Evaluation Board

The above fig displays the top view of the EVB-LAN8770-RMII evaluation board with key features, jumpers, power, and headers that are highlighted in red. This board utilizes a 25MHz crystal to generate the input reference clock for the LAN8770 device.

Microchip Technology EVB-LAN8770-RMII™ Evaluation Board

Features

Block Diagram

Board Layout

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