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LAN9220 Datasheet(PDF) 50 Page - SMSC Corporation |
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LAN9220 Datasheet(HTML) 50 Page - SMSC Corporation |
50 / 150 page 16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support Datasheet Revision 2.6 (12-04-08) 50 SMSC LAN9220 DATASHEET 3.12.1 TX Buffer Format TX buffers exist in the host’s memory in a given format. The host writes a TX command word into the TX data buffer before moving the Ethernet packet data. The TX command A and command B are 32- bit values that are used by the LAN9220 in the handling and processing of the associated Ethernet packet data buffer. Buffer alignment, segmentation and other packet processing parameters are included in the command structure. The following diagram illustrates the buffer format. Figure 3.13 Simplified Host TX Flow Diagram Idle Check available FIFO space init Write TX Command Write Buffer Last Buffer in Packet Not Last Buffer Write Start Padding (optional) Read TX Status (optional) TX Status Available |
Similar Part No. - LAN9220 |
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Similar Description - LAN9220 |
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