This application note introduces how to interface AD7276 high speed data converter with Blackfin® processor. It also provides an example code to demonstrate how to program the Blackfin processor's serial ports (SPI and SPORT) to receive data from AD7276 device in both core access and DMA access modes. Power-down mechanism between ADC conversions in DMA mode is also introduced. The entire reference design is implemented on ADSP- BF535 EZ-KIT Lite™ board.
This application guide introduces the interfacing methods for the AD7276 high-speed data converter with the Blackfin® processor. It provides example code demonstrating how to program the Blackfin processor's serial ports (SPI and SPORT) to receive data from the AD7276 device in both kernel access and DMA access modes. This manual is written in Chinese.
| Resolution | 12-bit |
|---|---|
| Sampling Rate | 3 MSPS |
| Power Supply | 2.35 V - 3.6 V |
| Package | 6-lead TSOT |
The device supports SPI (Serial Peripheral Interface) and SPORT (DSP Serial Port) interface protocols.
Power-down mode is entered by deasserting /CS between the second falling edge and the 10th rising edge of SCLK to interrupt conversion.