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RTL8201BL Datasheet(PDF) 7 Page - List of Unclassifed Manufacturers |
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RTL8201BL Datasheet(HTML) 7 Page - List of Unclassifed Manufacturers |
7 / 29 page ![]() RTL8201BL 2002-03-29 Rev.1.2 7 5.6 LED Interface/PHY Address Config These five pins are latched into the RTL8201BL during power up reset to configure PHY address [0:4] used for MII management register interface. And then, in normal operation after initial reset, they are used as driving pins for status indication LED. The driving polarity, active low or active high, is determined by each latched status of the PHY address [4:0] during power-up reset. If latched status is High then it will be active low, and if latched status is Low then it will be active high. Refer to Section 7.5 for more information. Symbol Type Pin No. Description PHYAD0/ LED0 LI/O 9 PHY Address [0] Link LED: Active when linked. PAD1/ LED1 LI/O 10 PHY Address [1] Full Duplex LED: Active when in Full Duplex operation. PHYAD2/ LED2 LI/O 12 PHY Address [2] Link 10/ACT LED: Active when linked in 10Base-T mode, and blinking when transmitting or receiving data. PHYAD3/ LED3 LI/O 13 PHY Address [3] Link 100/ACT LED: Active when linked in 100Base-TX and blinking when transmitting or receiving data. PHYAD4/ LED4 LI/O 15 PHY Address [4] Collision LED: Active when collisions occur. 5.7 Reset and other pins Symbol Type Pin No. Description RESETB I 42 RESETB: Set low to reset the chip. For a complete reset function, this pin must be asserted low for at least 10ms. PWFBOUT O 32 Power Feedback Output: Be sure to connect a 22uF tantalum capacitor for frequency compensation and a 0.1uF capacitor for noise de-coupling. Then connect this pin through a ferrite bead to PWFBIN(pin8). The connection method is figured in section 7.11. PWFBIN I 8 Power Feedback Input: see the description of PWFBOUT. NC 27 Not connection 5.8 Power and Ground pins Symbol Type Pin No. Description AVDD33 P 36 3.3V Analog power input: 3.3V power supply for analog circuit; should be well decoupled. AGND P 29,35 Analog Ground: Should be connected to a larger GND plane DVDD33 P 14,48 3.3V Digital Power input: 3.3V power supply for digital circuit. DGND P 11,17,45 Digital Ground: Should be connected to a larger GND plane. |
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