[[PageOutline]] = Inter-Integrated Circuit (I2C) = The Inter-Integrated Circuit by Philips is a popular interconnect (typically on-board) used on embedded processors as well as modern computers consisting of 2-wires (other than ground, power, and optional interrupts): * SCL - clock * SDA - data An I2C bus may be multi-master and support interrupts from the device to host controller. Reference: * http://en.wikipedia.org/wiki/I%C2%B2C == Linux Kernel API == See [wiki:linux/i2c] == USB Expansion devices == A I2C master can also be added via USB expansion. For example: * [http://trac.gateworks.com/wiki/expansion/gw16113 GW16113 firmware-flexible USB 2.0 FS expansion] * [http://www.commell.com.tw/product/Peripheral/PCI%20Express%20mini%20card/MPX-24794S.HTM Commell MPX-24794S USB 2.0 FS SPI/I2C/GPIO expansion] == Ventana == I2C is offered on several Ventana boards. Please view the [wiki:ventana/DigitalIO#I2Csupport Ventana I2C wiki]