Quick Start (BTL Mode)
4
SLAU757 – January 2018
Copyright © 2018, Texas Instruments Incorporated
TAS3251 Evaluation Module
ADVANCE INFORMATION
Figure 3. EVM Board (Bottom Side)
Use the following when connecting and configuring the board for 48-kHz USB BTL mode:
1. Ensure the power supply is OFF. Connect the power supply positive terminal to J24 PVDD (red) and
negative to J1 GND (black).
2. Connect the left channel speaker or power resistor load (3–8
Ω
) to the TAS3251EVM OUTA terminal
(J10 OUTA (red)) and the other side of the speaker or resistor load to the TPA3251EVM OUTB
terminal (J10 OUTB (black)).
3. Connect the right channel speaker or power resistor load (3–8
Ω
) to the TAS3251EVM OUTA terminal
(J15 OUTA (red)) and the other side of the speaker or resistor load to the TPA3251EVM OUTB
terminal (J15 OUTB (black)).
4. Check to make sure that the power supply is connected to J24 only, and the speakers or resistor loads
are connected to J10 or J15 only, as their colors are the same.
5. Connect USB cable from the PC to the TAS3251EVM.
6. Ensure that DAC MUTE S1 and AMP RESET S3 are in the lower positions of MUTE and RESET.
7. Check
for all jumper and switch configurations.
Table 1. Jumper and Switch Configurations (USB BTL Mode)
Jumper
Description
Configuration for BTL
J16
HS-EN USB high-speed enable
Do not care
J33
XMOS DISABLE
Remove
J2
Frequency select
Remove
J30
Data select for J9
Do not care
J1
MCLK-SEL
Install
J3
MCLK
1-2
J4
SCLK
1-2
