Texas Instruments TPA0243, Руководство пользователя

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2-3
2.2 Quick Start List for Platform
Follow these steps when using the TPA0243 EVM with the TI plug-n-play audio
amplifier evaluation platform (see the platform user’s guide, SLOU011, for
additional details). Table 2–1 shows typical platform jumper and switch
settings and numbered callouts for selected steps appear in Figure 2–1.
Table 2–1. Platform Jumper and Switch Settings for the TPA0243
EVM JP6 JP7 JP8 S2 S3
P-N-P Platform Mode X Hi Note 2 X
Notes: 1) X = Don’t care
2) Set S2 to
ON when signal conditioning board is installed in U1; set S2
to
OFF when no signal conditioning board is installed.
Platform preparations
1) Ensure that all external power sources are set to
OFF and that the platform
power switch S1 is set to OFF.
2) Install a TPA0243 module in platform socket U2, taking care to align the
module pins correctly.
3) Use switch S2 to select or bypass the signal conditioning EVM (U1).
4) Set Mode/Mute jumper JP6 to Mode and Polarity jumper JP8 to Hi.
Power supply
5) Select and connect the power supply (ensure power supply is set to OFF ):
a) Connect an external regulated power supply set to 5 V to platform V
DD
power input connector J6 taking care to observe marked polarity,
or
b) Install a voltage regulator EVM (SLVP097 or equiv.) in platform socket
U6. Connect a 7 V – 12 V power source to a platform V
CC
power input
J1 or J2 and jumper the appropriate power input (see platform user’s
guide).
Inputs and outputs
6) Ensure that the audio signal source level is set to minimum.
7) Connect the audio source to left and right RCA phono jacks J3 and J5 or
stereo miniature phone jack J4.
8) Connect the speaker to the right RCA jack J7 or to the stripped wire
speaker connector J8. Make sure the speaker is connected to the
Right + and – terminals.
Power-Up
9) Verify correct voltage and input polarity and set the external power supply
to ON. If V
CC
and an onboard regulator EVM are used to provide V
DD
, set
platform power switch S1 to ON.
Platform LED2 should light indicating the presence of V
DD
, and the evaluation
modules installed on the platform should begin operation.
10) Adjust the signal source level or adjust potentiometers R2 and R4 on the
EVM as needed.