Kit Contents; Specification - Texas Instruments TUSB2E221EVM User Manual

Evaluation Module Overview
1 Evaluation Module Overview
1.1 Introduction
This user's guide covers the features, operating conditions, and configuration of the TUSB2E221 evaluation
module (EVM). The TUSB2E221 supports low speed (LS), full speed (FS), and high speed (HS) operation and
supports host, peripheral, and dual-role applications.
This user's guide contains information and support documentation for the TUSB2E221 evaluation module
(EVM). Included are the schematics, PCB layouts, and bill of materials of the TUSB2E221EVM. Throughout this
document, the terms evaluation board, evaluation module, and EVM are synonymous with the TUSB2E221EVM.

1.2 Kit Contents

This EVM kit contains the following items:
• TUSB2E221EVM board
The user needs to provide one or two micro USB cables and one or two sets of SMP cables, as well as a 5V
power source for the EVM.

1.3 Specification

The TUSB2E221 device is designed to comply with the Embedded USB2 (eUSB2) Physical Layer Supplement
to the USB Revision 2.0 Specification published by the USB-IF. This specification defines three primary states
for a eUSB repeater: default, host, and peripheral states. After powering on the EVM, the TUSB2E221 is in
the default state and awaiting configuration as a host or peripheral repeater. Configuration occurs over the
eUSB interface by either the eUSB Host or eUSB device. For more information about configuration, refer to the
Embedded USB2 (eUSB2) Physical Layer Supplement to the USB Revision 2.0 Specification.
The diagrams shown below describe the system setup using the TUSB2E221EVM with an eUSB host or an
eUSB peripheral.
In the default state, the TUSB2E221 does not forward eUSB or USB packets. When an eUSB2 host is
connected to the eUSB ports of the TUSB2E221EVM, the repeater must be configured as a host repeater
by the eUSB host. A 5V power source must be provided to the EVM to power to the device.
Figure 1-2. TUSB2E221EVM Self-powered Peripheral Repeater Diagram
2 TUSB2E221 Evaluation Module
Figure 1-1. TUSB2E221EVM Host Repeater Diagram
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SNLU346 – MAY 2024
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