Overview
The DP83848H-MAU-EK is a Media Attachment Unit (MAU) evaluation kit designed by Texas Instruments (formerly National Semiconductor) to facilitate the evaluation and integration of the DP83848H Ethernet PHY chip. This kit is intended to help customers quickly design and market systems that incorporate the DP83848H device. It provides a comprehensive platform to demonstrate the key features and simplicity of designing with the DP83848H.
Key Specifications
| Specification | Description |
|---|---|
| Power Supply | 3.3V or 5V via MII connector, configurable via jumper J11 |
| PHY Address | Default: 01h, configurable to 03h via jumper J4 |
| LED Configuration | Link and activity indication, configurable via jumper J6 |
| Interfaces | MII interface, Integrated transformer RJ-45, MDIO connector |
| PCB Layout | FR4 material, 4 layers, trace impedance 100 ohms +/- 5%, trace space 0.007”/0.008” minimum |
| Dimensions | Target size: 2.0” (height), 3.0” (length) |
| Clock | On-board clock – Crystal, 25MHz |
Key Features
- Integrated magnetics
- Minimum configuration requirements: 2 PHY Addresses (01h or 03h), 2 LEDs (one for link and one for power)
- Strap options for MDIX_EN and LED_CFG
- RESET_N jumper for device reset
- Connections for MII interface, integrated transformer RJ-45, and MDIO connector
- Standard PCB layout considerations for clock, MII, and TD/RD signals
- Single-sided component placement
- On-board power supply and voltage regulator
Applications
The DP83848H-MAU-EK is designed for use in any customer equipment that provides a standard IEEE 802.3, Clause 22 MII DTE interface. This includes but is not limited to SmartBits/Netcom boxes and other Ethernet-based systems. It is particularly useful for evaluating and integrating the DP83848H chip in various network applications.
Q & A
- What is the purpose of the DP83848H-MAU-EK? The DP83848H-MAU-EK is designed to allow customers to evaluate and integrate the DP83848H Ethernet PHY chip into their systems.
- How is the power supply configured for the DP83848H-MAU-EK? The power supply can be configured to use either 3.3V or 5V via the MII connector, using jumper J11 to select the voltage.
- How do I set the PHY address on the DP83848H-MAU-EK? The PHY address can be set to either 01h (default) or 03h using jumper J4.
- What are the LED configurations available on the DP83848H-MAU-EK? The LEDs can be configured to indicate link presence and activity using jumper J6.
- What interfaces are available on the DP83848H-MAU-EK? The kit includes MII interface, integrated transformer RJ-45, and MDIO connector.
- What are the PCB layout considerations for the DP83848H-MAU-EK? The PCB is designed with FR4 material, 4 layers, trace impedance of 100 ohms +/- 5%, and trace space of 0.007”/0.008” minimum.
- What is the clock source for the DP83848H-MAU-EK? The kit uses an on-board clock – Crystal at 25MHz.
- Is any specific software required for the DP83848H-MAU-EK? No device-specific software is required, but National provides the Integrity utility for diagnostic and configuration purposes.
- What are the dimensions of the DP83848H-MAU-EK? The target size is 2.0” (height) and 3.0” (length).
- Can the DP83848H-MAU-EK be used in safety-critical applications? No, TI products are not authorized for use in safety-critical applications unless specifically designated by TI.
