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DACREF датащи(PDF) 16 Page - ATMEL Corporation |
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DACREF датащи(HTML) 16 Page - ATMEL Corporation |
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16 / 30 page ![]() 16 AVR32768 32157A-AVR-12/10 10 Ethernet interface When designing in the Ethernet physical device (PHY), the designer should refer to the datasheet for the PHY. This datasheet usually contains layout advice, connection schematics, reference design, etc. The information in the PHY datasheet is mandatory to get optimal performance and stability. 10.1 Ethernet interface in MII mode Figure 10-1. Ethernet interface in MII mode example schematic. Table 10-1. Ethernet interface in MII mode checklist. Signal name Recommended pin connection Description TX_CLK/ REF_CLK Transmit clock, 25MHz for 100Mb/s data rate CRS Carrier sense COL Collision detect MDIO PHY maintenance data MDC PHY maintenance clock RX_DV Receive data valid RXD[0:3] Receive data 4-bit |
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