Design Store

AN 486:SPI to I2C Using Altera MAX Series  

CategoryDesign Example \ Outside Design Store
NameAN 486:SPI to I2C Using Altera MAX Series
DescriptionAltera® MAX® II, MAX V, and MAX 10 FPGA devices serve as a bridge between a host that has serial
peripheral interface (SPI) to communicate with devices connected through an I2C bus.
The I2C is a serial, two-wire, low-bandwidth, industry standard protocol used in embedded systems to
communicate with various low-speed peripheral devices. The SPI is a widely used, fast, four-wire, full
duplex, serial communication interface.
Many embedded systems today have SPI interfaces, making it difficult to connect them with peripheral
devices in an I2C fashion. You can make the connection by modifying the system, but this is economically
inefficient. The best solution is to use Altera devices as a bridge to connect the two interfaces.
You can use the MAX II, MAX V, or MAX 10 FPGA devices to implement the bridge. Altera devices
provide greater flexibility, consume less power, and can be economically integrated into the embedded
system. The MAX II, MAX V, or MAX 10 FPGA device acts as an SPI slave to the host (SPI master) and
acts as a master to the I2C bus.
The provided designs enable an SPI-equipped host to control data flow to other devices such as Analogto-Digital
(AD) converter, LED controller, audio processor to read temperature sensors, hardware
monitors, and diagnostic sensors that are on an I2C interface.
Operating SystemNone
IP Core
IP CoreHeading
FamilyMAX 10
Development KitNon Kit Specific MAX 10 Design Examples
Quartus Prime VersionDownload Quartus Prime v14.0
Quartus Prime EditionStandard

Last updated on June 13, 2016, 11:41 a.m.