Texas Instruments TPA3220, Руководство пользователя

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Hardware Configuration
15 SLAU754A – January 2018 – Revised August 2019
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TPA3220 Evaluation Module
As Figure 8 shows, the AIB connector includes the following pins, associated specifications are listed in
Table 9 .
Table 8. AIB Connector (J28) Pinout
Pin
#
Function Description
Audio EVM
Input/Output
1 Amp Out A Speaker-level output from audio Class-D EVM (SE or one side of BTL) O
2 Amp Out B Speaker-level output from audio Class-D EVM (SE or one side of BTL) O
3 PVDD PVDD voltage supply from audio Class-D EVM (variable voltage depending on Class-D EVM
use) O
4 GND Ground reference between audio plug-in module and audio class-D EVM -
5 NC - -
6 NC - -
7 3.3 V 3.3-V supply from EVM; used for powering Audio Plug-in Module O
8 3.3 V 3.3-V supply from EVM; used for powering Audio Plug-in Module O
9 12 V 12-V supply from EVM; used for powering Audio Plug-in Module O
10 EN and RESET Assert enable and reset control for audio class-D EVM (active low) I
11 Analog IN_A Analog audio input A (analog in EVM) , Master I2S Bus (digital in EVM) I
12 NC - -
13 Analog IN_B Analog audio input B (analog in EVM) , Bit Clock I2S Bus (digital in EVM) I
14 CLIP_OTW Clipping detection, overtemperature warning, or both from audio class-D EVM (active low) O
15 Analog IN_C Analog audio input C (analog in EVM) , Frame Clock I2S Bus (digital in EVM) I
16 FAULT Fault detection from audio Class-D EVM (Active Low) O
17 Analog IN_D Analog audio Input D (analog in EVM) , Data In I2S Bus (digital in EVM) I
18 NC - -
19 NC - -
20 NC - -
21 GND Ground reference between audio plug-in module and audio class-D EVM -
22 GND Ground reference between audio plug-in module and audio class-D EVM -
23 NC - -
24 NC - -
25 NC - -
26 NC - -
27 Amp Out C Speaker-level output from audio class-D EVM (SE or one side of BTL) O
28 Amp Out D Speaker-level output from audio class-D EVM (SE or one side of BTL) O
Table 9. AIB Power Rail Specifications
EVM Power Rails Always Available Voltage Range Max Current Source
PVDD Yes 15–80 V 500 mA External Source
12 V Yes 12 V 500 mA LDO
3.3 V Yes 3.3 V 100 mA LDO