Samsung RT55EANS Especificações descarregar pdf (Página 102)

102 Intel

Atom™ processor CE4100 Ref# 420826

Platform Design Guide

Intel Confidential

Figure 8-14. GBE_RXDATA<0~3> and GBE_RXCLK

Table 8-7. GBE RX Routing Guidelines

Traces Description Layer

Min

Length

Max

Length

Trace

Width

Spacing Notes

TL1 SDV Breakout

Micro

strip

0.1” 0.5” 4 Mils >=4 Mils

TL2 Lead-in 1

Micro

strip 0.5” 6.5” 4 Mils >=10 Mils

TL3 GBE Breakout

Micro

strip 0.1” 0.5” 4 Mils >=4 Mils

Length

match

±0.25” TL1+TL2+TL3

Notes:

• GBE RX signal group: GBE_RXCLK, GBE_RXCTL, and GBE_RXDATA<0-3>. Match all signals with in +/-

0.25”respect to its clock.

• All trace impedance required to be 55 Ω +/- 10%.

• Trace widths provided here are targeted only for 55 Ω.

• All signals should be referenced to ground. Reference to unbroken power plane is also accepted.

• No additional probe points to be used. Minimize the vias to be used.

• This guides is based on RTL8211 PHY used on Intel development board. For PHY devices other than

RTL8211, refer to the Vendor’s routing guideline.

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Samsung RT55EANS Especificações Página 102