Arrow DECA User Manual page 114

The audio chip is programmed through I2C protocol which is implemented in the C code. The I2C pins
from audio chip are connected to Qsys System Interconnect Fabric through PIO controllers. In this
example, the audio chip is configured in Master Mode. The audio interface is configured as I2Sand
16-bit mode. 49.152MHz clock generated by the PLL is connected to the MCLK pin of the audio chip.
 Demonstration File Locations
 Hardware Project directory: DECA_Audio
 Bit stream used: DECA_Audio.sof
 Software Project directory: DECA_Audio \software
 Demonstration Setup and Instructions
 Connect an audio source to the LINE-IN port of the DECA board.
 Connect a speaker or headset to LINE-OUT port on the DECA board.
 Load the bit stream into FPGA.
 Load the software execution file into FPGA.
 Configure audio with the slide switches as shown in
 Push up SW0 on the DECA board to start audio playing from LINE-IN
 Push down SW0 on the DECA board to start audio playing from Beep Generation
DECA User Manual
Figure 7-23 Block diagram of Audio
113
Table 7-2.
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May 22, 2015