DE2-115: User Manual

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Figure 6-24 The Setup of the Music Synthesizer Demonstration 6.11 Audio Recording and Playing This demonstration shows how to implement an audio recorder and player using the <strong>DE2</strong>-<strong>115</strong> board with the built-in Audio CODEC chip. This demonstration is developed based on SOPC Builder and Nios II IDE. Figure 6-25 shows the man-machine interface of this demonstration. Two push-buttons and six slide switches are used for users to configure this audio system: SW0 is used to specify recording source to be Line-in or MIC-In. SW1 is used to enable/disable MIC Boost when the recording source is MIC-In. SW2 is used to enable/disable Zero-Cross Detection for audio playing. SW3, SW4, and SW5 are used to specify recording sample rate as 96K, 48K, 44.1K, 32K, or 8K. The 16x2 LCD is used to indicate the Recording/Playing status. The 7-SEG is used to display Recording/Playing duration with time unit in 1/100 second. The LED is used to indicate the audio signal strength. Table 6-7 and Table 6-8 summarize the usage of Slide switches for configuring the audio recorder and player. 103
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 104
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CONTENTS Chapter 1 DE2-115 Package
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6.9 IR Receiver Demonstration .....
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Bag of six rubber (silicon) covers
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Chapter 2 Introduction of the Alter
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One 40-pin Expansion Header with di
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40-pin expansion port o Configurabl
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You can also connect a microphone t
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5. The DE2_115_ControlPanel.sof bit
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Figure 3-3 Controlling LEDs Choosin
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Figure 3-6 Monitoring switches and
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The Sequential Read function is use
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3.7 SD Card The function is designe
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1. Choosing the VGA tab leads to th
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Figure 3-14 Testing the IR receiver
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Chapter 4 Using the DE2-115 Board T
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• Configuring the FPGA in JTAG Mo
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Figure 4-6 Connections between the
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Table 4-1 Pin Assignments for Slide
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HEX0[5] PIN_J22 Seven Segment Digit
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4.6 Using the LCD Module The LCD mo
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Figure 4-13 HSMC VCCIO supply volta
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HSMC_RX_D_N[1] PIN_C27 HSMC_RX_D_N[
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HSMC_TX_D_N[14] PIN_U28 HSMC_TX_D_N
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The voltage level of the I/O pins o
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Figure 4-19 Using Emulated LVDS on
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4.10 Using VGA The DE2-115 board in
Page 54 and 55: Table 4-16 Pin Assignments for ADV7
Page 56 and 57: Figure 4-24 Connections between FPG
Page 58 and 59: You will need to perform a hardware
Page 60 and 61: ENET1_TX_CLK PIN_C22 MII transmit c
Page 62 and 63: 4.17 Using the USB Interface The DE
Page 64 and 65: Table 4-26 IR Pin Assignments Signa
Page 66 and 67: • EEPROM The board has 32Kb EEPRO
Page 68 and 69: SRAM_DQ[7] PIN_AF7 SRAM Data[7] 3.3
Page 70 and 71: FL_ADDR[15] PIN_Y10 FLASH Address[1
Page 72 and 73: The top-level design file contains
Page 74 and 75: • System Configuration Under Syst
Page 76 and 77: Figure 5-6 HSMC Expansion Group The
Page 78 and 79: Chapter 6 Examples of Advanced Demo
Page 80 and 81: Finally, the YcrCb_to_RGB block con
Page 82 and 83: mouse connected to DE2-115 board. W
Page 84 and 85: sends a different USB packet to the
Page 86 and 87: Figure 6-7 Block diagram of the Kar
Page 88 and 89: Figure 6-9 Block Diagram of the SD
Page 90 and 91: Figure 6-11 Insert SD Card for the
Page 92 and 93: Main WAVE Lib System Call SEG7 I2C
Page 94 and 95: Figure 6-15 The setup for the SD mu
Page 96 and 97: Figure 6-16 Waveforms on two lines
Page 98 and 99: Figure 6-18 Remote controller Table
Page 100 and 101: We can apply the IR receiver to man
Page 102 and 103: Figure 6-23 Block diagram of the Mu
Page 106 and 107: • Demonstration Setup, File Locat
Page 108 and 109: Figure 6-27 MII interface MAC Confi
Page 110 and 111: Figure 6-29 MAC Options Configurati
Page 112 and 113: Figure 6-32 PHY connected to the MA
Page 114 and 115: Ethernet 1 respectively. Table 6-9
Page 116: Chapter 7 Appendix 7.1 Revision His
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DE2-115: User Manual

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