RTL8111C-VB-GR 查看數據表（PDF） - Realtek Semiconductor

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RTL8111C-VB-GR

INTEGRATED GIGABIT ETHERNET CONTROLLER FOR PCI EXPRESS™ APPLICATIONS

Realtek Semiconductor 

RTL8111C

Datasheet

7.3. Measurement Criteria

In order for the switching regulator to operate properly, the input and output voltage measurement criteria

must be met. From the input side, the voltage overshoot cannot exceed 4V; otherwise the chip may be

damaged. Note that the voltage signal must be measured directly at Pin 63, not at the capacitor. In order

to reduce the input voltage overshoot, the C82 and C83 must be placed close to Pin 63. The following

figures show what a good input voltage and a bad one look like.

Figure 11. Input Voltage Overshoot <4V (Good)

Figure 12. Input Voltage Overshoot >4V (Bad)

Integrated Gigabit Ethernet Controller for PCI Express

26

Track ID: JATR-1076-21 Rev. 1.5

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