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The Synopsys DesignWare® Ethernet GMAC IP enables the host to communicate data using the Gigabit Ethernet protocol (IEEE 802.3) at 10M, 100M, and 1G speeds. The IP is composed of three main layers: The Gigabit Ethernet Media Access Controller (GMAC), the MAC Transaction Layer (MTL), and the MAC DMA Controller (MDC). The MTL is highly configurable enabling optimum performance supporting a wide range of implementations based on end-system applications. A multitude of application interfaces are supported as well for easy SoC integration. Silicon proven and designed for easy integration into ASICs and FPGAs the DesignWare GMAC IP comes with a user-friendly application interface so designers can easily set their functional and implementation objectives to meet design requirements. The IP is verified using state of the art methodologies to reduce risk. This includes the RTL design, verification, hardware verification and interoperability tests.
The DesignWare Ethernet IP solutions consist of configurable controllers and silicon-proven PHYs supporting speeds of up to 100G, verification IP, IP Prototyping Kits, Software Development Kits and Interface IP Subsystems.  DesignWare Ethernet MAC 10/100/1000 Universal Datasheet
General Features
- Compliant with IEEE 802.3 specifications
- Support for IEEE 1588-2002 and IEEE 1588-2008 standards for precision networked clock synchronization
- IEEE 802.3-az for Energy Efficient Ethernet (EEE)
- IEEE 802.3x flow control automatic transmission of zero-quanta pause frame on flow control input de-assertion.
- IEEE 802.1Q VLAN tag detection for reception frames
- AMBA 2.0 for AHB Master/Slave ports and AMBA 3.0 for AXI Master/Slave ports
- Configurable to support data transfer rates of 10/100/100 Mbps, 10/100 Mbps only or 1000 Mbps only
- Multiple TCP/IP offload functions supported
PHY Interfaces
- Gigabit Media Independent Interface (GMII)
- Media Independent Interface (MII)
- Reduced GMII (RGMII)
- Serial GMII (SGMII)
- Ten Bit Interface (TBI)
- Reduced MII (RMII)
- Serial MII (SMII)
- Reduced TBI (RTBI)
- Reverse MII (RevMII)
Application Interface Features
- Fully synchronous design operating on a single system clock
- Supports:
- 32/64/128-bit data transfers
- Individual programmable burst size for Transmit and Receive DMA Engines
- Descriptor architecture allowing large blocks of data transfer with minimum CPU intervention & comprehensive status reporting for normal operation and transfers with errors
- Programmable interrupt options for different operational conditions
- Provides per-frame Transmit/Receive complete interrupt control
- Provides separate ports for host CSR and host DATA access configurable for FIFO, APB, AHB, or AXI interfaces
- Start and stop modes
- All AHB burst types
- AXI low-power interface
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