Introduction
2
SNLU261A – August 2019 – Revised November 2019
Copyright © 2019, Texas Instruments Incorporated
TUSB2E22EVM-CAT User's Guide
1
Introduction
The TUSB2E22EVM-CAT is designed for the TUSB2E22 device which is a USB Compliant eUSB2 to
USB 2.0 repeater supporting both device and host modes. TUSB2E22 supports USB Low Speed (LS) and
Full Speed (FS) signals and High Speed (HS) signals.
1.1
Features
This EVM kit contains the following items:
•
TUSB2E22EVM-CAT board
•
This user’s manual
The user will need 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.
1.2
Applications
The TUSB2E22EVM-CAT can be used to support device mode or host mode applications. No hardware
configuration changes are necessary for the TUSB2E22 to support different modes. However, in order for
the EVM to adhere to the USB 2.0 specification, when in host mode the active USB port should supply
VBUS and when in device mode the active USB port should monitor VBUS.
1.3
Description
The TUSB2E22EVM-CAT incorporates two Micro-AB USB 2.0 ports that can be used to connect the
USB signals of the repeaters to standard USB hosts, hubs or devices. The EVM also has two sets of
SMP connectors for connecting eUSB2 signals to eUSB2 phys or test equipment.
The TUSB2E22EVM-CAT incorporates a switch to set the CROSS feature of the TUSB2E22, as well
as an external reset push button.
Depending on the switch settings, the EVM can be powered from an external 5VDC wall supply, bench
power supplies, or even through one of the USB connectors.
2
Test Setup
The EVM can be powered in a variety of ways to support different applications and test set-ups. Two of
the most common set-ups are explained below.
2.1
TUSB2E22EVM-CAT - Wall Power
Wall power is used for standalone EVM testing.
•
A 5VDC 1A or greater power supply is attached to J1.
•
Jumper J5 is installed to route 5V to the entire EVM.
•
Jumper J14 is installed to connect the output of the 5V to 3.3V LDO to the 3.3V supply of the EVM.
•
Jumper J16 [1,2] is installed to route 3.3V to TUSB2E22 and the 1.8V LDO.
•
Jumper J15 is installed to provide 1.8V to the TUSB2E22 and the IO of the EVM.
•
SW2 is pulled high (SW 2 to 3) prior to power on / reset.
•
Jumpers J2 and J9 can be installed as needed if VBUS is to be provided to one of the USB ports (host
mode)
•
Jumpers not installed: J16[2,3]
