Data Sheet

iEthernet

W5200

6.3 Process of using general SPI Master device

1. Configure Input/Output direction on SPI Master Device pins.

2. Configure CSn as ‘High’ on inactive

3. Write target address for transmission on SPDR register (SPI Data Register).

4. Write OP code and data length for transmission on SPDR register.

5. Write desired data for transmission on SPDR register.

6. Configure CSn as ‘Low’ (data transfer start)

7. Wait for reception complete

8. If all data transmission ends, configure CSn as ‘High’

Figure 19 W5200 SPI Frame Format

Figure 20 Address and OP/DATA Length Sequence Diagram