P0071 Terasic Technologies Inc, P0071 Datasheet - Page 85
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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
- Current page: 85 of 116
- Download datasheet (11Mb)
Note:
execute
DE2_115_NIOS_DEVICE_LED\demo_batch\nios_device_led.bat
will
download .sof and .elf files.
Figure 6-6
illustrates the setup for this demonstration.
Figure 6-6 Setup for the USB device demonstration
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This demonstration uses the microphone-in, line-in, and line-out ports on the DE2-115 board to
create a Karaoke Machine application. The Wolfson WM8731 audio CODEC is configured in the
master mode, with which the audio CODEC generates AD/DA serial bit clock (BCK) and the
left/right channel clock (LRCK) automatically. As indicated in
Figure
6-7, the I2C interface is used
to configure the Audio CODEC. The sample rate and gain of the CODEC are set in this manner, and
the data input from the line-in port is then mixed with the microphone-in port and the result is sent
to the line-out port.
For this demonstration the sample rate is set to 48kHz. Pressing the pushbutton KEY0 reconfigures
the gain of the audio CODEC via I2C bus, cycling within ten predefined gain values (volume levels)
provided by the device.
84
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