The Foxonix Fox is a development board built on the Sonix SNC21000 speech microcontroller. It's a platform that allows you to create and test programs that include your own custom sound content (speech, music, sound effects, etc.). It includes enough flash memory to store almost 3 minutes of good quality audio.
There are 16 I/O pins which can be configured in any combination of Inputs and Outputs. Four of these pins can be used for PWM functions.
It also includes a programming socket for loading your code onto the stand alone Project Board.
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SPECS
| Microcontroller | Sonix SNC21000 |
| Clock Speed | 2 MHz |
| System Voltage | 3.3V |
| Input Voltage (min - max) | 4.5V - 20V |
| Input Voltage (recommended) | 5V - 12V |
| Digital I/O | 16 |
| PWM I/O | 4 of 16 (Port P3) |
| I/O Drive Current (P1, P2, P3.0, P3.1, P6) | 4 mA |
| I/O Drive Current (P3.2, P3.3) | 8 mA |
| I/O Sink Current (P1, P2, P3.0, P3.1, P6) | 6 mA |
| I/O Sink Current (P3.2, P3.3) | 16 mA |
| Registers (4-bit) | 16 |
| Flash Memory | 16 Mbit |
| Board Dimensions | 4.00 in. x 2.30 in. |
SCHEMATIC
Fox Board Schematic Rev. A
POWER REQUIREMENTS
The Fox Board can be powered directly from the USB cable. Simply plug the USB cable into the board and set power selection jumper P1 to USB. The board can also be powered from a DC plug-in power supply or battery pack, with an input voltage in the 5V - 12V range. When using the DC power jack, power selection jumper P1 must be set to EXT.
BOARD PINOUT
| 3.3V | System voltage generated by the on-board regulator |
| GND | System Ground |
| P1.0 - P1.3 | Port 1 I/O pins |
| P2.0 - P2.3 | Port 2 I/O pins |
| P3.0 - P3.3 | Port 3 I/O pins |
| P4.0 - P4.3 | Port 4 I/O pins (NOT USED) |
| P5.0 - P5.3 | Port 5 I/O pins (NOT USED) |
| P6.0 - P6.3 | Port 6 I/O pins |
| PWM SPK | Speaker Output for PWM Audio |
| DAC SPK1 | Speaker Output for DAC Audio |
| DAC SPK2 | NOT USED |
| P1 | Power Selection Jumper |
| P3 | Mini USB Connector |
| VO | Voltage Out |
| DFU | Device Firmware Upgrade Jumper |
| P12 | Project Board Programming Socket |