Samsung RT55EANS Specifiche Pagina 97

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Ref# 420826 Intel
®
Atom™ processor CE4100 97
Platform Design Guide
Intel Confidential
8.2.1.2 USBRBIAS/USBRBIASN Connection
Intel recommends that designers short the USBRBIASP and the USBRBIASN pins at the
package, and then rout the shorted pins to one end of a 22.6 ±1% resistor to ground.
Place the resistor within 500 mils of the processor. Avoid routing next to clock pins.
Figure 8-7. USBRBIAS/USBRBIASN Connection
Table 8-5. USBRBIASP/ USBRBIASN Routing Guidelines
Signal
Name
Impedance
Width Layer Length
Length
Matching
within
Diff Pair
Figure Notes
USBRBIASP
USBRBIASN
55 ±10% 4 mils Micro strip 0 – 0.5” N/A Figure 8-7 1
Notes:
1. W represents width of signal; S represents spacing to any other signal.
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