I²C Bus Interface - Slave

The I2C is a two-wire, bi-directional serial bus that provides a simple and efficient method of data transmission over a short distance between many devices. The DI2CS core provides an interface between a microprocessor/microcontroller and an I2C bus. It can works as a slave transmitter or slave receiver depending on working mode determined by a master device. The DI2CS core incorporates all features required by the latest I2C specification including clock synchronization, arbitration and High-speed transmission mode. The DI2CS supports all the transmission speed modes.
The DI2CS is a technology independent design that can be implemented in a variety of process technologies.

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Conforms to v.3.0 of the I2C specification Slave operation Slave transmitter Slave receiver Supports 3 transmission speed modes Standard (up to 100 kb/s) Fast (up to 400 kb/s) Fast Plus (up to 1 Mb/s) High Speed (up to 3,4 Mb/s) Allows operation from a wide range of input clock frequencies Simple interface allows easy connection to microprocessor/microcontroller devices Interrupt generation User-defined data setup time Fully synthesizable Static synchronous design Positive edge clocking and no internal tri-states Scan test ready

Embedded microprocessor boards Consumer and professional audio/video Home and automotive radio Low-power applications Communication systems Cost-effective reliable automotive systems

Pin	Type	Description
clk	input	Global clock
rst	input	Global reset
scli	input	I2C bus clock line (input)
sdai	input	I2C bus data line (input)
datai (7:0)	input	Processor data bus (input)
rd	input	Processor read strobe
we	input	Processor write strobe
address (1:0)	input	Processor address lines
cs	input	Chip select
sclo	output	I2C bus clock line (output)
sdao	output	I2C bus data line (output)
datao (7:0)	output	Processor data bus (output)
irq	output	Processor interrupt line