Altera Serial Digital Interface (SDI) MegaCore Function - Manual (Page 107)

Chapter 4: SDI Audio IP Cores 4–19
Clocked Audio Output MegaCore Function
February 2013 Altera Corporation Serial Digital Interface (SDI) MegaCore Function
User Guide
Clocked Audio Output MegaCore Function
The Clocked Audio Output MegaCore function accepts clocked Avalon-ST audio and
converts to audio in modified AES formats.
Parameters
Table 4–24 lists the MegaWizard Plug-In Manager parameters for the SDI Clocked
Audio Output MegaCore function.
Signals
Table 4–25 lists the Avalon-ST audio input and output signals when you instantiate
the SDI Clocked Audio Output MegaCore function in SOPC Builder.
Table 4–26 lists the Avalon-ST audio signals when you instantiate the SDI Clocked
Audio Output MegaCore function in SOPC Builder.
FIFO Reset Register
6:0 Unused WO Reserved.
7 FIFO reset WO Resets the clocked audio FIFO.
Table 4–23. SDI Clocked Audio Input MegaCore Function Register Map (Part 2 of 2)
Bit Name Access Description
Table 4–24. SDI Clocked Audio Output MegaCore Function Parameters
Parameter Value Description
FIFO size 3–10
Defines the internal FIFO depth.
For example, a value of 3 means 2 3 = 8.
Include Avalon-MM control
interface
On or Off
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 4–6 appear at the top level.
Table 4–25. Audio Input and Output Signals
Signal Width Direction Description
aes_clk [0:0] Input Audio input clock.
aes_de [0:0] Output Audio data enable.
aes_ws [0:0] Output Audio word select.
aes_data [0:0] Output Audio data output in internal AES format.
Table 4–26. Avalon-ST Audio Signals (Part 1 of 2)
Signal Bits Direction Description
aud_clk [0:0] Input
Clocked audio clock. All the audio input signals are
synchronous to this clock.
aud_ready [0:0] Output
Avalon-ST ready signal. Assert this signal when the
device is able to receive data.