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MAC
The on-chip independent Ethernet MAC is located on a second AHB bus with 16 KB of SRAM buffer and a dedicated DMA. This MAC supports most external 10/100 Ethernet PHY devices from 10 Base T to 100 Base T4. All of the LPC2300 and LPC2400 MCUs with Ethernet have a 10-pin Reduced Media Interdependent Interface (RMII). In addition to the RMII, the LPC2400 devices also feature a full 18-pin Media Independent Interface (MII) bus that is used to transmit, receive, and control for 4-bit data. The NXP Ethernet MAC IP is fully compliant with IEEE 802.3X PAUSE MAC Control protocol and employs full duplex flow control and half duplex back pressure, both which improve reliability of the Ethernet transmission.
PTM Published on: 2011-11-02