Texas Instruments TUSB2E221EVM User Manual page 4

Hardware
2 Hardware
2.1 Getting Started
Evaluation of the TUSB2E221EVM requires a 5V power source, a USB connection, and an eUSB2 connection.
This section assumes that the TUSB2E221EVM jumpers are in placed in the default state as described in
2-1.
Designator Default Position
J1
J3
J4
J6
J7
J12
J14
J15
J16
J17
J18
J19
J20
SW1 2-1 (Left)
SW3 2-3 (Top)
The following test procedure describes how to integrate the EVM into a eUSB system and begin evaluation.
Before getting started, make sure that power is not supplied to the system and proper ESD protective measures
are in place.
1. Connect to eUSB Port 0- The TUSB2E221EVM has two eUSB ports to connect to an eUSB host or device
via SMP cable. The eUSB host or device is responsible for configuring TUSB2E221 through the eUSB
interface as described in
2. Connect to USB Port A - The two micro-AB USB ports on the EVM connect to a USB host or device. If
the TUSB2E221 was configured as a device repeater in step 1, then attach a USB host to USB Port A. If
configured as a host, then attach a USB device.
3. Provide 5V power to the EVM - There are multiple ways to provide 5V to the EVM. For more information on
the various power modes refer to section
4. Power on the system, or issue a reset - After power-on, the eUSB host or device automatically configures
the repeater and establish a connection through the eUSB and USB interfaces. The TUSB2E221EVM also
incorporates an external reset push button in addition to a regular power reset circuit.
2.2 EVM Configuration
There are many ways to configure the TUSB2E221EVM to fit various applications. The power supply cam be
external or provided by VBUS. The GPIO pins and I2C interface of the TUSB2E221 allow for configuration of
signal conditioning settings. I2C mode is enabled by default on the EVM through the jumpers installed on J19
and J20. To access the I2C interface, attach a 1.8V I2C controller to the SDA, SCL and GND pins on header J4.
The 7-bit I2C target address is 0x4F.
Rev A. of the TUSB2E221EVM has SCL and SDA reversed from what is shown in the schematic. SCL
is pin 1 of J4, and SDA is pin 2.
4 TUSB2E221 Evaluation Module
Table 2-1. TUSB2E221EVM Default Jumper Configuration
Description
1-2 VBUS to J5 micro-USB Port A connector
1-2 5V Rail and DC Jack to VBUS
N/A I2C interface
N/A VBUS to J10 micro-USB Port B connector
2-3 EQ1 low
2-3 EQ0 low
1-2 5V input to 3.3V LDO
1-2 1.8V supply rail to 1.8V IO rail
1-2 1.8V LDO output to 1.8V supply rail
1-2 3.3V supply rail to 1.8V LDO
N/A EQ2 floating
1-2 I2C SDA pullup resistor
1-2 I2C SCL pullup resistor
Set in 2-1 position (left)
Set in 2-3 position (top)
Section 1.3.
Section
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2.2.1.
Note
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Table
SNLU346 – MAY 2024
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