2.2
Quick Start List When Connected to External I
2
C Controller
2.2.1
Evaluation Module Setup
GND
SCL
SDA
GND
External I C
Source
2
www.ti.com
Operation
displayed.
12.
I2C Status
box reports the status of I
2
C communications. An error or failure has occurred if it turns
red.
13.
Thermal
box reports the status of thermal failure. A thermal fault has occurred if it turns red.
14. The GUI has a built-in I2C programming interface. It has a log feature to record the changes that was
made in the GUI. Follow the steps below to use the I2C programming function.
•
At the top left corner of the GUI, click
File
to access the I2C programming interface.
•
Save Script
can record the current register values. Select Save Script >> Click the folder icon to
browse to the place where you want to save the script >> name the file in txt format then select OK
to save.
•
Load Script
can load the previously saved script to program the entire register file. Select Load
Script >> Click the folder icon to browse to the place where the script is located >> Select the file
then click OK >> Click Load.
•
I2C interface
can program individual register value of TPA2050D4. Select I2C Interface >> I2C
address is xE0, which is the address of TPA2050D4. Device address is from 1 to 7, which is the
register address of TPA2050D4.
•
Record Script
can record all the changes made in the GUI and store the changes in a text file.
Select Record Script >> Click the folder icon to browse to the place where you want to record the
script and then name the file in txt format >> Click Record Off to Record On, the green light will turn
red to indicate that the recording is activated >> Click Exit >> Make changes in the GUI >> Select
Record Script >> Click Record On to Record Off. The red light will turn green to indicate that the
recording is deactivated. >> Click exit. All the changes will be recorded in the selected txt file.
The TPA2050D4EVM can be easily connected to existing circuits with I
2
C controls. Connections to the
EVM module can be made using banana plugs for the power supply. The inputs accept standard RCA
plugs. The output connection accepts standard 3.5-mm headphone plugs.
1. Install shunts in jumpers JP4. Remove shunts in JP2 and JP3 and connect I
2
C controls to JP3 as
shown in
2. There are 2 options to power DVDD.
•
a. Connect USB cable to supply 1.8V for DVDD and remove R17.
•
b. Disconnect USB cable. Remove JP1 and connect an external power supply(from 1.75 V to 1.95
V) at TP18 (to DVDD).
Figure 6. Connect I
2
C Controls to JP3
3. For all the other connections, follow the steps in section 2.1.2.
SLOU206 – July 2008
TPA2050D4EVM Evaluation Module
7