Samsung RT55EANS Especificações descarregar pdf (Página 136)

136 Intel

Atom™ processor CE4100 Ref# 420826

Platform Design Guide

Intel Confidential

10.2 Audio Reference Clock Output

Routing Recommendation

Clock Name Unit Frequency Notes

au_ref_clk Audio reference

clock for internal

clock generation in

36.8640, 33.8688,

24.576, 22.5792

MHz

Figure 10-6. Audio_clk Signal Topology

Table 10-4. Audio_clk Signal Topology List

Traces Layer Min Length

Max

Length

Trace:

Width/Spacing

Spacing from other

signals

w_TL0

Breakout

0.1” 0.5” 4 mils >=4 mils

w_TL1+w_TL2

Micro strip

0.1” 12” 4 mils >=8 mils

Notes:

• The signal groups are for audio_clk.

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

• All signals prefer to reference to ground plane and routed over a continuous plane.

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