Serial Bus Interfaces

Serial bus interfaces play more and more important role in interfacing different electronic devices and subsystems to each other. Numerous standards in different application areas are used and new ones are being developed.

I2C	This Controller provides a serial interface that meets the Philips I2C bus specification and supports all transfer modes from and to the I2C bus. It may operate as receiver or transmitter in a master or slave mode supporting transmission rates up to 400 kHz. The core is available with APB interface.
I2CS	The I2CS Bus Controller provides the I2C slave serial interface that meets the Philips I2C bus specification. It supports slave transfer modes from and to the I2C bus.The core uses only 2 wires to connect a virtually unlimited number of devices, and therefore minimizes interconnections and usage of IC pins in the user application.
I2C-HS	I2C™ bus controller which provides a serial interface that meets the Philips I2C bus specification v.2.1. This core can work with high-speed mode transmission (up to 3.4Mb/s) providing backward compatibility with standard mode (up to 100kb/s) and fast mode transmission (up to 400kb/s). The core is available with generic as well as AMBA® AHB interface.
SPI-MS	Serial Peripheral Interface supporting slave as well as master capability with own rate generator and programmable polarity of serial clock. A dedicated set of slave selection signals facilitates integration in multi slave system.

These cores have been successfully prototyped in Altera Flex chips and/or Xilinx Virtex.

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