I²C Example Design

You can choose to generate the example design when generating the core in the IP Manager Configuration window. Compile the example design project and download the .hex or .bit file to your board. To generate example design, the Example Design Deliverables Option signal must be enabled.

The example designs the target the Trion® T20 BGA256 Development Board and Titanium Ti60 F225 Development Board.

The example design flow consists of the following steps:

1. The user control logic asserts the write signal with din, command_byte, and num_bytes assigned to the I²C master.
2. The I²C master sends data to the I²C slave, once complete, the user control logic asserts write_done signal.
3. Once the ready_to_rd signal is high, the user control logic asserts the read signal to the I²C slave and start receiving the data from I²C master.
4. Once the rddata_valid signal is high, the user control logic compares the read data from the I²C slave with the write data written from I²C master.
5. The user control logic asserts the read signal with command_byte and num_bytes assigned to the I²C master.
6. The I²C master sends command_byte to the I²C slave.
7. Once the ready_to wr signal is high, the user control logic asserts the write signal with din to the I²C slave.
8. The I2C slave sends data to the I²C master.
9. Once the data_out_valid signal is high, the user control logic compares the read data from the I²C master with the write data written from I²C slave.
10. Once the busy signal is low, the example design operation is completed.

Trion® T20 BGA256 Development Board

External jumpers are required to connect the I²C SDA and SCL ports between master and slave at the Trion® T20 BGA256 Development Board. The following table describes the external jumper requirements for the example design.

Table 1. External Jumper for Trion® T20 BGA256 Development Board

Connection Port	Header	Jumper Setting
SDA	H2	Connect pins 17 and 18
SCL	H2	Connect pins 21 and 22

The LED displays the first data byte that the slave or master receive sequentially from LED D3, D4, D5 and D6 continuously.

Titanium Ti60 F225 Development Board

External jumpers are required to connect the I²C SDA and SCL ports between master and slave at the Titanium Ti60 F225 Development Board through the MIPI and LVDS Expansion Daughter Card. Connect the P3 header of the daughter card to the P2 header of the Titanium Ti60 F225 Development Board.

The following table describes the external jumper requirements at the MIPI and LVDS Expansion Daughter Card for the example design.

Table 2. External Jumper for MIPI and LVDS Expansion Daughter Card

Connection Port	Header	Jumper Setting
SDA	J5	Connect pins 32 and 34
SCL	J5	Connect pins 38 and 40

The LED displays the first data byte that the slave or master received in sequentially from LEDs D16 green and LED D17 white to LED D16 red and LED D17 yellow continuously.