Altera Serial Digital Interface (SDI) MegaCore Function Uživatelský manuál Strana 108
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4–20 Chapter 4: SDI Audio IP Cores
Clocked Audio Output MegaCore Function
Serial Digital Interface (SDI) MegaCore Function February 2013 Altera Corporation
User Guide
For register interface signals, refer to Table 4–7. All SDI audio cores use the same
register interface signals.
Register Maps
Table 4–27 and Table 4–28 list the register maps for the SDI Clocked Audio Output
MegaCore function.
aud_valid
[0:0] Input
Avalon-ST valid signal. The MegaCore function
asserts this signal when it receives data.
aud_sop
[0:0] Input
Avalon-ST start of packet signal. The MegaCore
function asserts this signal when it is starting a new
frame.
aud_eop
[0:0] Input
Avalon-ST end of packet signal. The MegaCore
function asserts this signal when it is ending a frame.
aud_data
[23:0] Input Avalon-ST data bus. This bus transfers data.
Table 4–26. Avalon-ST Audio Signals (Part 2 of 2)
Signal Bits Direction Description
Table 4–27. SDI Clocked Audio Output MegaCore Function Register Map
Bytes Offset Name
00h Channel 0 Register
01h Channel 1 Register
02h FIFO Status Register
03h FIFO Reset Register
Table 4–28. SDI Clocked Audio Output MegaCore Function Register Map
Bit Name Access Description
Channel 0 Register
7:0 Channel 0 RW The user-defined channel number of audio channel 0.
Channel 1 Register
7:0 Channel 1 RW The user-defined channel number of audio channel 1.
FIFO Status Register
7:0 FIFO status RO This sticky bit reports the overflow of the clocked audio output FIFO.
FIFO Reset Register
6:0 Unused WO Reserved.
7 FIFO reset WO Resets the clocked audio FIFO.
- User Guide 1
- Contents 3
- Chapter 4. SDI Audio IP Cores 4
- Appendix A. Constraints 5
- Appendix B. Clocking 5
- Features 7
- Release Information 8
- Device Family Support 8
- General Description 9
- Notes to Table 1–5: 10
- OpenCore Plus Evaluation 11
- Resource Utilization 12
- 2. Getting Started 15
- Design Flow 16
- SDI Walkthrough 17
- Parameterizing 19
- Setting Up Simulation 20
- Generating Files 20
- - SD 270 Mbps 22
- - HD 1.485 Gbps 22
- - 3G 2.97 Gbps 22
- Simulating the Design 23
- Specifying Constraints 25
- Multiple Channels 26
- Compiling the Design 28
- Programming a Device 28
- Setting Up Licensing 29
- 3. Functional Description 31
- Block Description 32
- HD-SDI LN Insertion 34
- Scrambling and NRZI Coding 35
- Transceiver Clock 35
- Receiver 36
- Word Alignment 38
- Video Timing Flags Extraction 39
- RP168 Switching Compliance 39
- HD-SDI LN Extraction 40
- HD-SDI CRC Checking 40
- Accessing Transceiver 40
- Transmitter 42
- Transmitter Clocks 42
- Receiver Clocks 43
- Notes to Table 3–5: 44
- Notes to Figure 3–8: 44
- Figure 3–9. Receiver Clocks 46
- rxdata 47
- Note to Table 3–7: 50
- Notes to Figure 3–11: 51
- Figure 3–12. Receiver Clocks 53
- New TRS reasserts 55
- Stratix IV GX 57
- Note to Table 3–10: 58
- Note to Table 3–11: 58
- Notes to Figure 3–18: 60
- Note to Figure 3–19: 61
- User Logic 62
- Encrypted SDI IP Core 62
- Cyclone IV GX 63
- Notes to Table 3–12: 70
- Note to Table 3–13: 70
- Note to Table 3–14: 71
- Note to Figure 3–30: 77
- Notes to Figure 3–33: 78
- signal in 82
- Table 3–18 on page 3–50 82
- Notes to Figure 3–40: 83
- Notes to Table 3–19: 85
- MegaCore Verification 87
- 4. SDI Audio IP Cores 89
- Functional Description 90
- Note to Table 4–4: 93
- Note to Table 4–5: 94
- MegaCore function 100
- Register Maps 103
- Parameters 105
- AES Format 109
- Avalon-ST Audio Interface 109
- Note to Figure 4–6: 110
- Instantiating the IP Cores 111
- Simulating the Testbench 112
- Design Example 113
- Components 114
- Hardware Setup 116
- D6 D7 D8 D9 D10 D11 D12 D13 118
- A. Constraints 123
- Notes to Figure A–1: 124
- (gxb_rxclk 125
- Specify Clock Characteristics 126
- Set Multicycle Paths 127
- 337.5-MHz Zero-degree Clocks 128
- Minimize Timing Skew 129
- Non Cyclone Devices 130
- Cyclone Devices Only 131
- A–10 Appendix A: Constraints 132
- B. Clocking 133
- B–2 Appendix B: Clocking 134
- C. Receive and Retransmit 135
- Loopback FIFO Buffer 136
- Additional Information 137
- Info–2 Additional Information 138
- Document Revision History 138
- How to Contact Altera 139
- Typographic Conventions 139
- Info–4 Additional Information 140
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