Difference between revisions of "I2C data"
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{{Port | {{Port | ||
|Number=$113B | |Number=$113B | ||
| + | |NumberDec=4411 | ||
| + | |PortMask=%0001 0001 0011 1011 ?? | ||
|ShortDesc=Sets and reads the I2C SDA line | |ShortDesc=Sets and reads the I2C SDA line | ||
|Readable=Yes | |Readable=Yes | ||
|Writable=Yes | |Writable=Yes | ||
|Subsystem=I2C | |Subsystem=I2C | ||
| − | |||
}} | }} | ||
| − | |||
When write, it sets the SDA line, D0 --> SDA | When write, it sets the SDA line, D0 --> SDA | ||
When read, it reads the SDA line, SDA --> D0 | When read, it reads the SDA line, SDA --> D0 | ||
| − | Note that I2C uses open collector outputs, the idle, released state is '1'. So if you want to read the line, you have to set it to '1' first. | + | Note that I2C uses open collector outputs, the idle, released state is '1'. So if you want to read the line, you have to set it to '1' first. |
| − | |||
. | . | ||
Latest revision as of 11:02, 4 May 2020
| Number | $113B |
|---|---|
| Decimal | 4411 |
| Short desc. | Sets and reads the I2C SDA line |
| Bit Mask | %0001 0001 0011 1011 ?? |
| Readable | Yes |
| Writable | Yes |
| Subsystem | I2C |
When write, it sets the SDA line, D0 --> SDA When read, it reads the SDA line, SDA --> D0
Note that I2C uses open collector outputs, the idle, released state is '1'. So if you want to read the line, you have to set it to '1' first.
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