Time (ns)

0

0.5

1

1.5

2

-0.4

-0.2

0.0

0.2

0.4

Time (ns)

0

0.5

1

1.5

2

-0.4

-0.2

0.0

0.2

0.4

Agilent

16 GHz

Scope

USB-IF SMA Fixture

TUSB211

EVM

B

A

2m USB 3.0 cable

USB Host

A

TEST_PACKET

transmission

10

TUSB211, TUSB211I

SLLSEO0D – MAY 2015 – REVISED OCTOBER 2017

www.ti.com

Product Folder Links: TUSB211

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Copyright © 2015–2017, Texas Instruments Incorporated

8.2.2.2 For a Device Side Application

1. Configure the TUSB211 to the desired EQ setting

2. Power on (or toggle the RSTN pin if already powered on) the TUSB211

3. Connect a USB host, the USB-IF device-side test fixture, and USB device to the TUSB211. Ensure that the

USB-IF device test fixture is configured to the ‘INIT’ position

4. Allow the host to enumerate the device

5. Enable the device to transmit USB TEST_PACKET

6. Using SMA cables, connect the oscilloscope to the USB-IF device-side test fixture and ensure that the

device-side test fixture is configured to the ‘TEST’ position.

7. Execute the oscilloscope’s USB compliance software.

8. Repeat the above steps in order to re-test TUSB211 with a different EQ setting

8.2.3 Application Curves

Figure 2. Eye Diagram Bench Setup

Figure 3. TUSB211 Disabled

Figure 4. EQ Level 0