RMII 10/100 Mbps Ethernet Wing
This Wing is intended to add Ethernet communication capabilities to the Butterfly Platform. It provides the physical layer using the Micrel KSZ8041NL via RMII (Reduced Media Independent Interface) to a Ethernet MAC in a FPGA or a Microcontroller.
Applications
- Peripheral devices
- Automation
- Communications
Specifications
- 10baseT/100BaseTX Physical layer
- Fully compliant to IEEE 802.3u standard
- LED indicators for Link/Activity and Speed
- Low power
- Compact interface using just 8 signals
- Does not support MIIM management bus (MDIO/MDC) signals
Pinout
RMII 10/100Mbps Ethernet Wing Pinout
| Pin |
Name |
Direction |
Function |
| 1 |
TXD1 |
Input |
Transmit data 1 |
| 2 |
TXD0 |
Input |
Transmit data bit 0 |
| 3 |
TXD_EN |
Input |
Transmit Enable |
| 4 |
RXER |
Output |
Receive Error |
| 5 |
CRS_DV |
Output |
Carrier Sense/Receive Data Valid |
| 6 |
RXD0 |
Output |
Receive data bit 0 |
| 7 |
RXD1 |
Output |
Receive data bit 1 |
| 8 |
REFCLK |
Input |
50 MHz external clock input |
Direction is from the perpective of this Wing
Preview 3D Rendered Image
FPGA support
This Wing can be used with any Ethernet MAC that supports RMII interface to the PHY. This includes a large variety of IP cores and embedded microcontrollers. A specially adapted MAC core is being developed to be used with this Wing.
Resources
Current Status
The RMII 10/100 Mbps Ethernet Wing PCB's are being built, tested and verified for functionality. Look for this item to be available in the store shortly.
- Board Design - Complete
- Board Manufactured - In process
- Board Assembled - Pending
- Preliminary Testing - Pending
- Board completely Verified - Pending
- Board available in Store - Pending
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Activity Type |
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