FEST

FESTECE 477 Fall 2011

TEAM 5

Gloria Budiman

Alexander Kidarsa

Christopher Sakalis

Vishal Gala

FEST

Far

End

Speakerphone

Test

System

INTRODUCTION

DESIGN CONSTRAINT

Telephone line, ~300-3400 Hz

By Nyquist Rate, 8000Hz

16-bit data depth per channel

Requires to playback and record four different audio files

MCU has only one storage media

Large, fast-access internal memory needed

COMPUTATION REQUIREMENT

FFT

Normalized LMS

Auto-correlation

INTERFACE REQUIREMENT

SD card

USB*

2 Push Buttons• Reset• Start/Stop

2 Switch

LCD/7-Segment-Display

LED

ON-CHIP & OFF-CHIP

On-Chip• Serial Peripheral Interface• SD Card• USB*

Off-Chip• DAC - To playback audio data from MCU• ADC - To record audio data to the MCU

POWER, PACKAGING & COST

A.C. powered• Back up battery necessary for 24-hour operation

Packaging• Portable• But handheld form factor not desired

Unique device

COMPONENT SELECTION

TMS320F-28035 MCU• Lower pin count, 128KB on-chip Flash• Other Options

• TMS320F-28335 (same family, 100+ pins, 256KB on-chip Flash)• C5000 low-power MCU (500+ pins)• C6000 single-core DSP (700+ pins, BGA only)

TLV320AIC23 Audio Codec• Modularity• Extendibility• Other Options

• PCM3008 (low-end, non-configurable)• TLV320AIC320, PCM3070 (non-hand-solderable)

SUMMARY