Quick Start (BTL MODE)
5
SLAU754A – January 2018 – Revised August 2019
Copyright © 2018–2019, Texas Instruments Incorporated
TPA3220 Evaluation Module
Use the following steps when connecting and configuring the board for BTL MODE:
1. Ensure the power supply is OFF. Connect the power supply positive terminal to J1 PVDD (red) and
negative terminal to J1 GND (black).
2. Connect the left channel speaker, power resistor load (3–8
Ω
) to the TPA3220EVM positive output
terminal (J9 OUT1+ (red)) and other side of the speaker, power resistor to the TPA3220EVM negative
output terminal (J9 OUT1– (black)).
3. Connect the right channel speaker, power resistor load (3–8
Ω
) to the TPA3220EVM positive output
terminal (J2 OUT2+ (red)) and other side of the speaker, power resistor to the TPA3220EVM negative
output terminal (J2 OUT2– (black)).
4. Check to make sure that the power supply is connected to J1 only and speakers are connected to J9
or J2 only, as their colors are the same.
5. Input Configuration:
A.
Differential Inputs:
connect one differential XLR audio input to each DIFF IN1 (J14) and DIFF IN2
(J15). 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) and IN2P (J18).
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
Table 1. Jumper and Switch Configurations (BTL Mode)
Component
Component Description
Configuration for BTL
J23
Gain/SLV Select
MSTR-18dB
J24
N/A
IN
J4, J12
Input DIFF or SE Select
OUT = DIFF IN, IN = DIFF IN
J10, J11, J20, J21
AIB Input Select
Position 1:2 for XLR/RCA, Position 2:3
for AIB
J6
HEAD or AD Mode Select
IN
J7, J8
PBTL or BTL Select
OUT
J22
VDD SEL
Position 2:3 (GVDD)
J25
5V-PU SEL
OUT
S1
RESET Control
RESET
S2
MUTE Control
MUTE
J13
Auto Retry
OUT
J29
PVDD-IN
IN
J26
12V-IN
IN
J5
5V-IN
IN
J27
3.3V-IN
IN
J19
5V-PU EN
OUT
J17
OSC Output
No Connection
J16
Master or Slave Select
Position 3:4 MASTER MODE
