2.2.1 Connections and Board Configuration
illustrates the connectors and jumpers on the EVM.
Figure 2-2. EVM Board With Connectors and Jumpers
Use the following steps when connecting and configuring the board:
1. Ensure the power supply is OFF. Connect power supply positive terminal to J1 PVDD (red) and negative
terminal to J1 GND (black).
2. Connect one speaker, power resistor load (3–8 Ω) to TPA3223EVM positive output terminal (J9 OUT1+
(red)) and other side of speaker, power resistor to TPA3223EVM negative output terminal (J9 OUT1–
(black)).
3. Use a short banana cable to connect J2 OUT2+ to J9 OUT1+ and a second short banana cable to connect
J2 OUT2– to J9 OUT1–. This connection forms the parallel connection of both OUTx+ to the one side of the
speaker and parallel connection of both OUTx– to the other side of the speaker.
4. Check to make sure that the power supply is connected to J1 only and the speaker is connected to J9 or J2
only, as the colors are the same.
5. Input Configuration:
a.
Differential Inputs:
connect one differential XLR audio input to DIFF IN1 (J14). Install jumpers J10, J11,
J20, and J21 to position 1:2, which is labeled as
RCA
or
XLR
. Jumpers J4 and J12 must be uninstalled
for DIFF input.
b.
Single-Ended Inputs:
connect one single-ended RCA audio input to IN1P (J3). Install jumpers J10, J11,
J20, and J21 to position 1:2, which is labeled as
RCA
or
XLR
. Jumpers J4 and J12 must be installed for
SE input.
c.
Audio Interface Board Input:
Install jumpers J10, J11, J20, and J21 to position 2:3, which is labeled as
AIB
. Jumpers J4 and J12 must be installed for SE input from the AIB or uninstalled for DIFF input from
the AIB.
6. Ensure that RESET S1 and MUTE S2 are in the lower positions of RESET and MUTE, respectively.
7. Check
for all jumper and switch configurations necessary.
Setup By Mode
8
TPA3223 Evaluation Module
SLAU874 – OCTOBER 2022
Copyright © 2022 Texas Instruments Incorporated