参数资料
型号: IP-SDI
厂商: Altera
文件页数: 105/140页
文件大小: 0K
描述: IP VIDEO INTERFACE - SDI
标准包装: 1
系列: *
类型: MegaCore
功能: 视频系统用串行数字接口
许可证: 初始许可证
Chapter 4: SDI Audio IP Cores
4–17
Clocked Audio Input MegaCore Function
Clocked Audio Input MegaCore Function
The Clocked Audio Input MegaCore function converts clocked audio in AES formats
to Avalon-ST audio.
For a typical AES input, for each channel, the Clocked Audio Input function creates a
192-bit validity word, user word and channel status word, and presents the words as
a control packet after the audio data packet.
Parameters
Table 4–18 lists the MegaWizard Plug-In Manager parameters for the SDI Clocked
Audio Input MegaCore function.
Table 4–18. SDI Clocked Audio Input MegaCore Function Parameters
Parameter
FIFO size
Include Avalon-MM control
interface
Value
3–10
On or off
Description
Defines the internal FIFO depth.
For example, a value of 3 means 2 3 = 8.
Turn on to include the Avalon-MM control interface.
When you turn on this parameter, the register interface signals
in Table 4–7 appear at the top level. Otherwise, the direct
control interface signals in Table 4–21 appear at the top level.
Signals
Table 4–19 lists the Avalon-ST audio signals when you instantiate the SDI Clocked
Audio Input MegaCore function in SOPC Builder.
Table 4–19. Audio Input Signals
Signal
aes_clk
aes_de
aes_ws
aes_data
Width
[0:0]
[0:0]
[0:0]
[0:0]
Direction
Input
Input
Input
Input
Description
Audio input clock.
Audio data enable.
Audio word select.
Audio data input in internal AES format.
Table 4–20 lists the Avalon-ST audio signals when you instantiate the SDI Clocked
Audio Input MegaCore function in SOPC Builder.
Table 4–20. Avalon-ST Audio Signals (Part 1 of 2)
Signal
aud_clk
aud_ready
aud_valid
February 2013
Altera Corporation
Width
[0:0]
[0:0]
[0:0]
Direction
Input
Input
Output
Description
Clocked audio clock. All the audio input signals are
synchronous to this clock.
Avalon-ST ready signal. Assert this signal when the
device is able to receive data.
Avalon-ST valid signal. The MegaCore function
asserts this signal when it is outputs data.
Serial Digital Interface (SDI) MegaCore Function
User Guide
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