Texas Instruments TS3USB221 quick start Quick Start Evaluation

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2.2Quick Start

TS3USB221/A/E EVM

TS3USB221/A/E

Figure 2. Quick Start Evaluation

1.Connect the PC to the USB connector J3 through a USB cable.

2.Make sure the 3.3-V LDO output is enabled by opening J8 without a jumper.

3.Make sure the TS3USB221/A/E IC is enabled by shunting J7 with a jumper.

4.Connect two USB downstream devices (for example, mouse, keyboard, USB memory stick, etc) to J4 and J5 on the EVM.

5.To select USB downstream device 1 connected to J4, make sure J6 is shunted with a jumper. To select USB downstream device 2 connected to J5, make sure J6 is open without a jumper.

6.Connector J1 and J2 are connected together without a USB switch. This through-path can serve as a reference to compare with the TS3USB221/A/E path.

4 TS3USB221/A/E High Speed USB 2.0 (480 Mbps) 1:2 Multiplexer/Demultiplexer	SCDU001A –July 2009 –Revised October 2009
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