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10/100 Mbit Ethernet MAC
The GRETH core implements 10/100 Mbit/s Ethernet Media Access Controller (MAC) with AMBA host interface. The core implements the 802.3-2002 Ethernet standard. Receive and transmit data is autonomously transferred between the Ethernet MAC and the AMBA AHB bus using DMA transfers. Through the use of receive and transmit descriptors, multiple ethernet packets can be received and transmitted without CPU involvement. The GRETH also provides an MII interface for PHY control, and hardware support for the EDCL UDP debugging protocol. For critical space applications, a fault-tolerant version of GRETH is available with full SEU protection of all RAM blocks.
特色
- Full implementation of IEEE 802.3-2002
- 10/100 Mbit operation
- AMBA AHB host interface with DMA
- Low CPU overhead
- Low area: 1,500 LUT or 10,000 gates
- Optional PHY control (MII)
- Optional fault-tolerance for aerospace app.
- Standalone AHB or GRLIB plug&play interface
- Drivers for eCos, RTEMS and Linux
- Free VHDL source code under GNU GPL license
- Low-cost license for commercial applications
优势
- Easily integrated through AMBA plug&play
- Low-area overhead
- Quick evalution through open-source availability
- Free device drivers
可交付内容
- VHDL source code
- Test benches
- GRLIB plug&play interface
- Optional FPGA evaluation board
Block Diagram of the 10/100 Mbit Ethernet MAC
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