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W90N740CD Datasheet(PDF) 5 Page - Winbond |
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W90N740CD Datasheet(HTML) 5 Page - Winbond |
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5 / 39 page  W90N740 Reference Manual Publication Release Date: May 9, 2003 - 5 - Revision A2 External Bus Interface (EBI) • External I/O Control with 8/16/32 bit external data bus • Cost-effective memory-to-peripheral DMA interface • SDRAM Controller supports up to 2 external SDRAM & the maximum size of each device is 32MB • ROM/FLASH & External I/O interface • Support for PCMCIA 16-bit PC Card devices On-Chip Instruction and Data Cache • Two-way, Set-associative, 8K-byte I-cache and 2K-byte D-cache • Support for LRU (Least Recently Used) Protocol • Cache can be configured as an internal SRAM • Support Cache Lock function Ethernet MAC Controller (EMC) • IEEE 802.3 protocol engine with programmable MII or RMII interface for 10/100 Mbits/s • DMA engine with burst mode • 256 bytes transmit & 256 bytes receive FIFO for MAC protocol engine and DMA access • Built-in 16 entry CAM Address Register • Support long frame (more than 1518 bytes) and short frame (less than 64 bytes) • Re-transmit (during collision) the frame without DMA access • Half or full duplex function option • Support Station Management for external PHY • On-Chip Pad generation NAT Accelerator (Patent Pending) • Hardware acceleration on IP address / port number look up and replacement for network address translation, including MAC address translation • Provide 64 entries of translation table • Support TCP / UDP packets GDMA Controller • 2 Channel GDMA for memory-to-memory data transfers without CPU intervention • Increase or decrease source / destination address in 8-bit, 16-bit, or 32-bit data transfers • Supports 4-data burst mode to boost performance • Support external GDMA request |
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