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DACREF Datenblatt(PDF) 17 Page - ATMEL Corporation |
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DACREF Datenblatt(HTML) 17 Page - ATMEL Corporation |
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17 / 30 page ![]() AVR32768 17 32157A-AVR-12/10 Signal name Recommended pin connection Description RX_ER Receive error RX_CLK Receive clock, 25MHz for 100Mb/s data rate TX_EN Transmit enable TXD[0:3] Transmit data 4-bit TX_ER Transmit error 10.2 Ethernet interface in RMII mode Figure 10-2. Ethernet interface in RMII mode example schematic. TX_CLK/REF_CLK CRS COL RX_DV RXD[0:3] TX_ER TXD[0:3] TX_EN RX_CLK RX_ER MDIO MDC X1 MDIO MDC CRS RX[0:1] RX_ER TX_EN TX[0:1] Ethernet PHY Table 10-2. Ethernet interface in RMII mode checklist. Signal name Recommended pin connection Description TX_CLK/ REF_CLK Reference clock, 50MHz for 100Mb/s data rate CRS Not used in RMII mode COL Not used in RMII mode MDIO PHY maintenance data MDC PHY maintenance clock RX_DV Carrier sense, data valid |
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