USB-I2C-FM Reference Design

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SunMan USB-I2C-FM

The Sunman USB-I2C-FM board is a multifunction eval board and debug tool.

Features

USB to I2C

Type B USB connector
10-Pin shrouded header with AARDVARK compatible pinout
3.3V, 100KHz, I2C Bus
10-Pin shrouded header with 8, 3.3V GPIO lines
Powered from USB
AT90USB646, USB to I2C is programmable via USB or Atmel JTAGICE, 10-Pin shrouded header
Reset and Bootloader push button switches

I2C to FM Transmitter/Reciever

SN761633 FM Stereo/Mono Transmitter Receiver IC
Adjustable output power to +4dBm
RSSI with 2dB resolution
87.387MHz to 108.113MHz Frequency range
32.768KHz crystal oscillator frequency reference
Standard 3.5mm, stereo, audio jacks for line in and line out

Software

C# GUI for reading/writing all chip registers
Source code provided (Visual Studio 2011 Project)
C source for AT90USB646 USB to I2C provided (Eclipse/GNU AVR)

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