Texas Instruments TAS5414, User Manual, Page: 6 / 32

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1.4 Initial Power Up
1.5 Basic Graphical User Interface Controls
2 EVM Description
2.1 Description of Input
2.1.1 Analog Inputs
EVM Description
Before applying power, check to make sure the Standby Control switch is in the Standby ON position, as
shown in
Figure 1 .
Figure 1. End Panel for Input Connections
Apply power; the STANDBY and MUTE LEDs should be on. The Fault LED may also be on, but not
necessarily. This indicates that the unit is powered, and the TAS5414 or TAS5424 is in Standby Mode and
Mute Mode. The fault indicated is an undervoltage fault during power up. This is normal and is cleared by
reading the I
2
C Register 0x00, but to quickly clear the fault, use the Standby switch. Switch it to the OFF
position and then back to ON. This resets the device into its default state and clears the power-up fault.
This is the main window for the graphical user interface (GUI). The default state for the TAS5414 and
TAS5424 is mute. To unmute, click the Play All button at the top left of the window. To mute, click the
Mute All button.
Figure 2. Main Window
Analog inputs are provided for either balanced or unbalanced depending on which device is in the EVM.
Both are connected to the EVM through the four RCA jacks. The unbalanced inputs have the shield of the
RCA connected to ground. The balanced inputs have the plus {+) input on the center pin of the RCA and
the minus (–) input on the shield. The balanced ground can be connected to the chassis or Power- (GND).
6 TAS5414 and TAS5424 Evaluation Module SLOU202 – June 2007
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