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LAN9252/ML 数据表(PDF) 30 Page - Microchip Technology |
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LAN9252/ML 数据表(HTML) 30 Page - Microchip Technology |
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30 / 329 page  LAN9252 DS00001909A-page 30 2015 Microchip Technology Inc. FIGURE 4-2: POWER CONNECTIONS - REGULATORS DISABLED +1.8 V to +3.3 V VDDCR Core Logic & PHY digital VDD12TX2 Ethernet PHY 1 Analog VDD33BIAS VDD33TXRX1 VSS VDDCR Ethernet PHY 2 Analog VDD12TX1 VDD33TXRX2 Ethernet Master Bias IO Pads To PHY1 Magnetics To PHY2 Magnetics Note: Bypass and bulk caps as needed for PCB VDDIO VDD33 +3.3 V +3.3 V Crystal Oscillator VSS PLL (exposed pad) (or separate 2.5V) (or separate 2.5V) VDDIO VDDIO VDDIO VDDIO VDDCR OSCVDD12 OSCVSS +3.3 V (IN) +1.2 V (OUT) Internal 1.2 V Core Regulator enable +3.3 V (IN) +1.2 V (OUT) Internal 1.2 V Oscillator Regulator VSS enable REG_EN +1.2 V (Pin 6) |
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