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Ref# 420826 Intel
®
Atom™ processor CE4100 87
Platform Design Guide
Intel Confidential
7.4 S/PDIF Audio Interface
This S/PDIF interface supports the IEC60958 standard. This is a serial unidirectional self-
clocking interface. The interface supports linear PCM sampling rates of 32 kHz, 44.1 kHz, 48
kHz, 96 kHz, and 192 kHz with 24-bit stereo data samples.
Figure 7-3. S/PDIF Audio Output Interconnects Topology
Table 7-3. S/PDIF Output Interconnects
Traces Layer Min Length
Max Length
Trace:
Width/Spacing
Spacing from
other signals
Notes
w_TL1
Break out
0.1” 0.5” 4 mils >=8 mils
w_TL2
Micro Strip
0.5” 9” 4 mils >=8 mils
Notes:
All traces impedance required to be 55 +/- 10%.
All signals prefer to reference to ground plane and routed over a continuous plane.
Simulation data based on Cin = 10pF (no IBIS models).
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