Hardware Description and Setup
3
SNLU238A – August 2018 – Revised September 2019
Copyright © 2018–2019, Texas Instruments Incorporated
DS250DF230EVM User’s Guide
1
Hardware Description and Setup
The general procedure for setting up and testing with the DS250DF230 Evaluation Module
(DS250DF230EVM) hardware is as follows:
1. Check the EVM jumper settings to ensure they match
below.
2. Connect the EVM to a PC using the provided USB cable.
3. Connect 3.3V power (2A max) as shown below. The EVM has an on-board 3.3V-to-2.5V regulator to
supply the Retimer with the required 2.5V. Make sure multiple jumpers are used on header J10.
Figure 1. DS250DF230EVM, Showing Connections for Power, Signal, and USB Communications
4. Connect the EVM to the system under test.
The default EVM configuration has four differential RX inputs and four differential TX outputs accessible to
the user. Connect the RX and TX signals to the test channel using Huber+Suhner 1x8 MXP cable
assemblies (See
for ordering information).
NOTE:
All TX and RX channels are AC coupled with physical 220 nF capacitors on the evaluation
board, so external AC coupling capacitors are not needed when using this EVM.