Difference between revisions of "I2C"
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== Stuff to buy == | == Stuff to buy == | ||
| − | + | * Power Supply | |
| − | + | * Gumstix (x2) | |
| − | + | ** Motherboard | |
| − | + | ** Network card | |
| − | + | ** Breakout Board | |
| + | ** Power Plug | ||
| + | ** CF Card | ||
| + | * I2C expanders | ||
| + | * I2C eproms (for feedback testing) | ||
| + | * header pins | ||
| + | * header pin connectors | ||
Revision as of 18:17, 7 June 2007
Parameters for the operation of the VFAT board are downloaded to the chip using the I2C protocol.
A good overview of I2C is available on wikipedia
Electrical Characteristics
The I2C specification limits the I2C bus capacitance to 400pF. The cat5e wire specification limits wire capacitance to 50pF/m, so we should be able to push I2C at least 8m. Testing is needed, but by lowering the bus clock and the pull-up resistors a much greater length should be possible.
Task List
Stuff to buy
- Power Supply
- Gumstix (x2)
- Motherboard
- Network card
- Breakout Board
- Power Plug
- CF Card
- I2C expanders
- I2C eproms (for feedback testing)
- header pins
- header pin connectors