Rainbow Electronics W90N745CDG - Manual (Page 97)

W90N745CD/W90N745CDG
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6.5 Ethernet MAC Controller
Overview
The W90N745 provides an Ethernet MAC Controller (EMC) for LAN application. This EMC has its
DMA controller, transmit FIFO, and receive FIFO.
The Ethernet MAC controller consists of IEEE 802.3/Ethernet protocol engine with internal CAM
function for Ethernet MAC address recognition, Transmit-FIFO, Receive-FIFO, TX/RX state machine
controller and status controller. The EMC only supports RMII (Reduced MII) interface to connect with
PHY operating on 50MHz REF_CLK.
Features
y Supports IEEE Std. 802.3 CSMA/CD protocol.
y Supports both half and full duplex for 10M/100M bps operation.
y Supports RMII interface.
y Supports MII Management function.
y Supports pause and remote pause function for flow control.
y Supports long frame (more than 1518 bytes) and short frame (less than 64 bytes)
reception.
y Supports 16 entries CAM function for Ethernet MAC address recognition.
y Supports internal loop back mode for diagnostic.
y Supports 256 bytes embedded transmit and receive FIFO.
y Supports DMA function.