FEST ECE 477 Fall 2011 TEAM 5 Gloria Budiman Alexander Kidarsa Christopher Sakalis Vishal Gala

FEST  Far  End  Speakerphone  Test  System

INTRODUCTION

DESIGN CONSTRAINT  Telephone line, ~ 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 MCU Lower pin count, 128KB on-chip Flash Other Options TMS320F (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