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DP83867CS Datasheet(PDF) 102 Page - Texas Instruments |
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DP83867CS Datasheet(HTML) 102 Page - Texas Instruments |
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102 / 114 page ![]() VDD1P0 VDDIO 1 PF GND (Die Attach Pad VDDIO 10 PF 10 nF 1 PF VDDIO 1 PF 1 PF 1 PF 10 PF 10 nF 1 PF 1 PF VDD1P0 VDD1P0 VDD1P0 VDDA2P5 1 PF VDDA2P5 10 PF 10 nF 1 PF VDDA1P8 VDDA1P8 VDDIO Supply 2.5V Supply 1.0V Supply 0.1 PF 0.1 PF 0.1 PF 0.1 PF 0.1 PF 0.1 PF 0.1 PF 0.1 PF 0.1 PF DP83867CS, DP83867IS, DP83867E SNLS504 – OCTOBER 2015 www.ti.com 11 Power Supply Recommendations The DP83867 is capable of operating with as few as two or three supplies. The I/O power supply can also be operated independently of the main device power supplies in order to provide flexibility for the MAC interface. When operating in 3 supply mode, the 2.5-V VDDA2P5 can come up with or after the 1.8-V VDDA1P8 but not before it. It is highly recommended that the 1.8-V VDDA1P8 supplies be powered first. There is no sequencing requirement for other supplies when operating in 3 supply mode. There is no requirement for the sequence of the supplies when operating in 2 supply mode. The connection diagrams for the two supply and three supply configurations are shown in and . For two supply configuration, both VDDA1P8 pins must be left unconnected. Place 1µF & 0.1µF decoupling capacitors as close as possible to component VDD pins. VDDIO may be 3.3 V or 2.5 V or 1.8 V. No Components should be connected to VDDA1P8 pins in Two Supply Configuration. Figure 26. Two Supply Configuration 102 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated |
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