Introduction; Hardware Overview; Ac-Mb Settings; Ac-Mb Audio Serial Interface Routing - Texas Instruments ADCx140EVM-PDK Series User Manual

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Introduction

The ADCx140EVM-PDK is an evaluation module (EVM) designed to demonstrate the performance and
functionality of the TLV320ADCx140 family of devices. This family includes the devices shown in
with differences in performance and function noted.
Device
TLV320ADC3140
TLV320ADC5140
TLV320ADC6140
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Hardware Overview

The evaluation kit consists of the TLV320ADCx140EVB daughterboard and the AC-MB motherboard. The
motherboard is used to provide power, control, and digital audio signals to the evaluation module. The
daughterboard contains the TLV320ADCx140 device and its input connections. A detailed functional
overview of the TLV320ADCx140EVB system is described in
2.1

AC-MB Settings

2.1.1 Audio Serial Interface Settings
The AC-MB provides the digital audio digital signals to the evaluation module from the universal serial bus
(USB), optical, stereo jack, and external audio serial interface (ASI) header.
diagram of the ASI routing on the AC-MB.
USB
Optical Inp ut
Optical Output
Stereo An alog
Input
Switch SW2 on the AC-MB selects the audio serial bus that interfaces with the TLV320ADC5140EVB.
Next to switch SW2, the AC-MB has a quick reference table to identify the audio serial interface source
options and switch settings. The AC-MB acts as the master for the audio serial interface, with three
different modes of operation (see
SBAU335 – May 2019
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Table 1. TLV320ADCx140 Family
SNR Without DRE (dB)
Aud io
Pro cessor
PCM921 1
Figure 1. AC-MB Audio Serial Interface Routing
Figure 2): USB, optical or analog, or external ASI.
Copyright © 2019, Texas Instruments Incorporated
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Section 5.
Figure 1
MUX
Sou rce
Exte rnal ASI Hea der
Sele ctor
(SW2)
Introduction
Table 1
SNR With DRE (dB)
N/A
120
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To EVM
ADCx140EVM-PDK
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