I²C Bus Interface Slave -Base version

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 DI2CSB provides an interface between a passive target device e.g. memory, LCD display, pressure sensors etc. and an I2C bus. It can works as a slave receiver or transmitter depending on working mode determined by a master device. Very simple interface, composed with the read, write and data signals, allows easy connection to the target devices. The core does not required programming and is ready to work after power up/reset. The read, write, burst read, burst write and repeated start transmissions are automatically recognized by the core. The core incorporates all features required by I2C specification. The DI2CSB supports the following transmission modes: Standard, Fast and High Speed.
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 Support for reads, writes, burst reads, burst writes, and repeated start 7-bit addressing No programming required Simple interface allows easy connection to target device e.g. memory, LCD display, pressure sensors etc. 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
sdai	input	I2C bus data line (input)
scli	input	I2C bus clock line (input)
datai (7:0)	input	Data bus from target device
sdao	output	I2C bus data line (output)
datao (7:0)	output	Data bus to target device
rd	output	Read strobe for target device
wr	output	Write strobe for target device