Single-ended (Coax) and Differential (STP) Operation Configuration
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SNLU205 – March 2016
Copyright © 2016, Texas Instruments Incorporated
DS90UB921-Q1EVM User's Guide
1.11 Single-ended (Coax) and Differential (STP) Operation Configuration
The DS90UB921-Q1EVM supports both Single-ended (Coax) and Differential (STP) operations.
For Single-ended (Coax) operation
(default)
, C82 is 330nF and C84 is 150nF on Top layer. Use SMA
connectors (J28, J29). For Differential (STP) operation, Remove C82 and C84 and populate 100nF on
C80 and C81 on Bottom layer. Use HSD connector (J27).
Figure 1-4. Single-Ended (Coax) at Top Layer
