P0071 Terasic Technologies Inc, P0071 Datasheet - Page 105
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P0071
Manufacturer Part Number
P0071
Description
TPAD MULTIMEDIADEVELOPMENT KIT
Manufacturer
Terasic Technologies Inc
Series
tPAD, Cyclone®IVr
Specifications of P0071
Main Purpose
Reference Design, Tablet
Embedded
Yes, FPGA / CPLD
Utilized Ic / Part
EP4CE115
Primary Attributes
8-Inch TFT LCD, LED Backlight
Secondary Attributes
5-Megapixel Digital Image Sensor
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Figure 6-25 Man-Machine Interface of Audio Recorder and Player
Figure 6-26
shows the block diagram of the Audio Recorder and Player design. There are hardware
and software parts in the block diagram. The software part stores the Nios II program in SRAM.
The software part is built by Nios II IDE in C programming language. The hardware part is built by
SOPC Builder under Quartus II. The hardware part includes all the other blocks. The “AUDIO
Controller” is a user-defined SOPC component. It is designed to send audio data to the audio chip
or receive audio data from the audio chip.
The audio chip is programmed through I2C protocol which is implemented in C code. The I2C pins
from audio chip are connected to SOPC System Interconnect Fabric through PIO controllers. In this
example, the audio chip is configured in Master Mode. The audio interface is configured as I2S and
16-bit mode. 18.432MHz clock generated by the PLL is connected to the XTI/MCLK pin of the
audio chip through the AUDIO Controller.
Figure 6-26 Block diagram of the audio recorder and player
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