Hardware Setup
6
SLLU261A – April 2017 – Revised February 2019
Copyright © 2017–2019, Texas Instruments Incorporated
TUSB8044RGC Evaluation Module
Table 1. Switch Definitions (continued)
Switch
Standard
Definition
SW2_5
Off
SCL_SMBCLK PD Switch
The TUSB8044 has an internal pulldown on this terminal, so the serial EEPROM or SMBUS interface is disabled. If the
switch is set to the ON position, an external pulldown resistor is connected to the serial clock terminal for test purposes.
SW2_6
Off
SDA_SMBDAT PD Switch
The TUSB8044 has an internal pulldown on this terminal, so the serial EEPROM or SMBUS interface is disabled. If the
switch is set to the ON position, an external pulldown resistor is connected to the serial clock terminal for test purposes.
3.2
EVM Installation
To install the EVM, perform the following steps:
1. Attach a 5-V, 3-A wall power source to J6.
2. Turn on switch SW3, LED D4 should be lit.
3. Attach a USB cable between J3 and a USB host. LEDs D1, D5, D6, D7 and D8 should be lit.
3.3
Troubleshooting
Case 1: Device function or functions are “banged out” in Device Manager.
•
Make sure that the latest updates are installed for the operating system.
•
Make sure that the latest drivers are installed for the host controller.
Case 2: The EVM does not work at all.
•
Verify that all switches are in their default state and the EVM is powered on with a 5-V source with
adequate current to support any bus-powered devices (3 A+).
•
If installed, remove the serial EEPROM from the EEPROM socket. The EVM does not require an
EEPROM to operate.
•
Make sure shunts are installed on J7, J8, and J9.
•
In the case where a 12-V power supply has been attached to the EVM, the fault is non-recoverable.
