Difference between revisions of "RPI-I2C-HUB"
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* I2C Hub / Repeater / Replicator / Multiplexer / De-multiplexer | * I2C Hub / Repeater / Replicator / Multiplexer / De-multiplexer | ||
** PCA9544A IC | ** PCA9544A IC | ||
| − | * Controlled via I2C | + | ** Controlled via I2C |
| − | * Multiple part vendors | + | ** Multiple part vendors |
| − | * Devices with the same address can be attached to different ports | + | ** Devices with the same address can be attached to different ports |
* Host I2 port goes to Raspberry Pi I2C lines | * Host I2 port goes to Raspberry Pi I2C lines | ||
| − | * 3.3V host operation | + | ** 3.3V host operation |
* Four I2C slave ports | * Four I2C slave ports | ||
| − | * I2C ports can use the Raspberry Pi or have their own power (power source select jumper) | + | ** I2C ports can use the Raspberry Pi or have their own power (power source select jumper) |
| − | * A Raspberry PI which runs 3.3V can control an I2C device which runs at 5V | + | ** A Raspberry PI which runs 3.3V can control an I2C device which runs at 5V |
* Voltage translation between the ports | * Voltage translation between the ports | ||
| − | * I2C ports can be 3.3V or 5V | + | ** I2C ports can be 3.3V or 5V |
* Fits in any Raspberry Pi model | * Fits in any Raspberry Pi model | ||
| − | * Cutout for Model B RCA video jack | + | ** Cutout for Model B RCA video jack |
* Interrupt controller on each channel and host 100KHz/400KHz operation | * Interrupt controller on each channel and host 100KHz/400KHz operation | ||
* On-board termination resistors | * On-board termination resistors | ||
Revision as of 20:15, 26 January 2020
Contents
I2C Hub for the Raspberry Pi
Features
- I2C Hub / Repeater / Replicator / Multiplexer / De-multiplexer
- PCA9544A IC
- Controlled via I2C
- Multiple part vendors
- Devices with the same address can be attached to different ports
- Host I2 port goes to Raspberry Pi I2C lines
- 3.3V host operation
- Four I2C slave ports
- I2C ports can use the Raspberry Pi or have their own power (power source select jumper)
- A Raspberry PI which runs 3.3V can control an I2C device which runs at 5V
- Voltage translation between the ports
- I2C ports can be 3.3V or 5V
- Fits in any Raspberry Pi model
- Cutout for Model B RCA video jack
- Interrupt controller on each channel and host 100KHz/400KHz operation
- On-board termination resistors
