Texas Instruments TPA2028D1YZFEVM

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Operation

5. Powering the EVM:

• The EVM can be powered via USB connection or by external power supply:

(a) Via USB power: Install shunt for USBPWR if USB power is used.

(b) External power supply: connect an external regulated power supply adjusted for 2.5 V–5.5 V to the

VDD and GND banana jacks, taking care to observe marked polarity. Make sure USBPWR is

removed in this case.

Note:

(a) USB interface may not be able to provide enough current. For best audio performance, use

external power supply.

(b) Make sure only one power source is used. Connecting two power sources will cause damage

to the device and the supply.

6. Connect audio source to RCA jacks IN.

7. Connect speakers (8 Ωto 32 Ω) to the output banana jacks OUTP and OUTM.

8. Plug in USB.

9. Turn on the power supply.

10. If this is the first time a TPA2028D1YZFEVM is plugged in after installing the software, follow the

Windows dialog (Figure 2), questions, and selections:

(a) Select "Install from a list or specific location (Advanced)", then click next.(1)

(b) Browse to the folder where the TPA2028D1 interface is installed then click ok.

Figure 2. FoundNew Hardware Wizard Advisory Screen

NOTE: It is not necessary to repeat steps 10. a. to c., once the driver is installed.

(1) Computerscreen images showing Windows XP interface are courtesy of Microsoft Corporation

SLOU283–February 2010 TPA2028D1YZFEVM

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