LTE-A Module Series
EG06 Hardware Design
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Keep PCIe data and control signals away from sensitive circuits and signals, such as RF, audio, and
19.2MHz clock signals.
A capacitance should be added in series on Tx/Rx traces to remove any DC bias.
Keep the maximum trace length less than 300mm.
The length difference of Tx or Rx differential pairs should be less than 0.7mm for PCIe routing traces.
The differential impedance of PCIe data trace should be 100Ω±10%.
Separate the SS-USB data pairs (Tx, Rx) and PCIe data pairs (Tx, Rx) from each other as far as
possible. If SS_USB and PCIe data pairs must cross on adjacent layers, please keep crossings at
right angles to minimize unbalanced (asymmetric) coupling.
PCIe data traces must not be routed under components or crossing other traces.
3.18. WLAN Control Interface*
EG06 provides a low power PCIe interface* and a control interface for WLAN design.
The following table shows the pin definition of WLAN control interface.
Table 23: Pin Definition of WLAN Control Interface