Overview
The DP83848M-MAU-EK is an evaluation board designed by Texas Instruments to facilitate the development and testing of the DP83848M Ethernet physical layer transceiver. This board is intended to help engineers and developers evaluate the features and performance of the DP83848M chip, which is part of the PHYTER™ family of Ethernet physical layer transceivers.
The DP83848M-MAU-EK provides a comprehensive platform for demonstrating the capabilities of the DP83848M, including its support for 10/100 Mbps Ethernet speeds, integrated magnetics, and various configuration options.
Key Specifications
| Specification | Description |
|---|---|
| Operating Supply Voltage | 3.3 V |
| Interface Type | RJ-45 |
| Ethernet Speed | 10/100 Mbps |
| PHY Address | Default: 01h, Optional: 03h |
| LED Indicators | LINK and SPEED |
| Power Supply | On-board power supplied by MII connector or external 3.3V via jumper |
| Board Size | Approximately 2.05" (height) x 1.5" (length) |
| Layers | 4 layers |
| PCB Material | FR4 |
Key Features
- Integrated magnetics for the RJ-45 connector
- Support for Auto-MDIX configuration
- LED indicators for link and speed status
- Strap options for MDIX_EN and LED_CFG
- MII interface and MII header for system connection
- On-board clock using a 25MHz crystal
- Compact and low-cost design
- Double-sided component placement
- Uniform supply and ground plane design
Applications
The DP83848M-MAU-EK is suitable for any customer equipment that provides a standard IEEE 802.3, Clause 22 MII DTE interface. This includes but is not limited to:
- Network interface cards (NICs)
- Embedded systems requiring Ethernet connectivity
- Industrial automation and control systems
- Consumer electronics with Ethernet capabilities
Q & A
- What is the primary purpose of the DP83848M-MAU-EK evaluation board?
The primary purpose is to provide a platform for evaluating and demonstrating the features of the DP83848M Ethernet physical layer transceiver.
- What is the operating supply voltage for the DP83848M-MAU-EK?
The operating supply voltage is 3.3 V.
- What types of Ethernet speeds are supported by the DP83848M-MAU-EK?
The board supports 10/100 Mbps Ethernet speeds.
- How is the PHY address set on the DP83848M-MAU-EK?
The PHY address is set by resistor R29; the default setting is 01h, and it can be set to 03h by stuffing resistor R29.
- What are the LED indicators on the DP83848M-MAU-EK used for?
The LED indicators are used to show link and speed status.
- Can the DP83848M-MAU-EK be powered externally?
- What is the significance of the Auto-MDIX configuration on the DP83848M-MAU-EK?
The Auto-MDIX configuration allows for automatic detection and switching between straight-through and crossover cables.
- What type of PCB material is used for the DP83848M-MAU-EK?
The PCB is made of FR4 material.
- Are there any specific software requirements for using the DP83848M-MAU-EK?
No device-specific software is required, but National Semiconductor provides the Integrity utility for diagnostic and configuration purposes.
- What are the dimensions of the DP83848M-MAU-EK board?
The board is approximately 2.05" (height) x 1.5" (length).
