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W5300 Datasheet(PDF) 22 Page - WIZnet Co., Ltd |
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W5300 Datasheet(HTML) 22 Page - WIZnet Co., Ltd |
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22 / 128 page  © Copyright 2008-2014 WIZnet Co.,Ltd. All rights reserved. 22 between VCC1A8 and GNDA for core power noise filtering. VCC1V8 Power 1.8V power supply for Digital part Between each VCC and GND, 0.1uF decoupling capacitor can be selectively connected. GNDA Ground Analog ground Make analogue ground plane as wide as possible when designing the PCB layout. GND Ground Digital ground Make digital ground plane as wide as possible when designing the PCB layout. 1V8O O 1.8V regulator output voltage 1.8V/150mA power created by internal power regulator, is used for core operation power (VCC1A8, VCC1V8). Be sure to connect 3.3uF tantalum capacitor between 1V8O and GND for output frequency compensation, and selectively connect 10uF capacitor for high frequency noise decoupling. 1V8O is connected to VCC1V8, separated to 1uH ferrite bead and connected to VCC1A8. <Notice> 1V8O is the power for W5300 core operation. It should not be connected to the power of other devices. Fig 2. Power Design |
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