User manual

VI. MAC5310 Audio Codec and Audio Power Amplifier Module

VI.1 Introduction

The MAC5310 Audio Codec and Audio Power Amplifier Module can be used as audio input/output

interface in the WiRobot system by plugging into the PMB5010 Multimedia Controller board. The on-

board codec provides high resolution signal conversion from digital-to-analog (D/A) and from analog-

to-digital (A/D) using over-sampling sigma-delta technology. With the on-board audio output power

amplifier and the microphone preamp in the codec, the external speaker and microphone can be

directly connected to the MAC5310 board.

VI.1.1 Features

• 16-bit over-sampling sigma-delta A/D, D/A converter

• Maximum output conversion rate:

- 16 ksps with on-chip FIR filter

- 64 ksps with FIR bypassed

• Codec built-in FIR produces 84-db SNR for ADC and 85-db SNR for DAC over 11-kHz BW

• 2s-complement data format

• Codec built-in functions including PGA, anti-aliasing analog filter, and operational amplifiers

for general-purpose interface (such as MIC interface and hybrid interface)

• On-board audio output power amplifier can support up to 1.5 W power to the external speaker

• On-board oscillator

• Plug-and-play in the WiRobot system

VI.1.2 Applications

• Audio input/output for robotic systems

• Voice and speech recognition

• Voice and audio playback

VI.2 Operations

VI.2.1 Theory of Operation

The MAC5310 Module is designed to run as part of WiRobot system. It can be directly plugged on to

the PMB5010 Robot Multimedia Controller board. No configuration procedure is needed. Once

connected, the PMB5010 on-board firmware and the audio input/output device driver will take care

of the low level operations of the voice/speech capturing and audio output.

VI.3 Connections

VI.3.1 Board Structure

Figure VI.1 shows the board structure, locations and functions of the connectors on the MAC5310

module board.

Microphone

Connector

Speaker

Connector

System Interface

Connector