Analog Devices EVAL-ADAU1466Z User Manual page 13

EVAL-ADAU1466Z
5. Configure the S/PDIF transmitter (Tx) signal routing as
follows:
a. Click the S/PDIF TX box (see Figure 42).
Figure 42. Configuring the S/PDIF Transmitter Routing Matrix Register
b. From the dropdown menu that appears, select From
DSP to choose the signal coming from the DSP core
(see Figure 43).
Figure 43. Routing the DSP Core Outputs to the S/PDIF Transmitter
c. Close the dialog box shown in Figure 43.
d. Confirm that the setting has taken effect by verifying that
the color of the S/PDIF TX box has changed from gray
to black (see Figure 44). If the color of the box changes
to black, the DSP core has been routed to the S/PDIF
transmitter; therefore, the output of ASRC 0 can be used
in the DSP program.
Figure 44. Confirming that the DSP Core Outputs are Routed
to the S/PDIF Transmitter
6. Click the Schematic tab at the top of the window to return
to the schematic design view.
7. Add an S/PDIF input to the project as follows:
a. From the IO > ASRC > From ASRC folder, click Asrc
Input (see Figure 45) and drag it into the project space
to the right of the toolbox (see Figure 46).
Figure 45. ASRC Input Block Selection
User Guide
Because the left and right signals of the S/PDIF receiver are
passing through the ASRC 0, the input to the DSP program
is the Asrc Input block in SigmaStudio. This naming con-
vention is such that all blocks in
from the perspective of the DSP core. Therefore, the Asrc
Input block in
from the ASRC outputs. The inputs to the ASRCs themselves
are defined in the register window (see Figure 41).
By default, Channel 0 and Channel 1 are active when their
corresponding checkboxes are selected. Because the ASRC 0
outputs correspond to Channel 0 and Channel 1, this default
configuration can be used (see Figure 46). For reference, a
mapping of the ASRC outputs to the corresponding channels
on the Asrc Input block in the DSP schematic is provided in
Table 1.
Table 1. ASRC Output to
ASRC Output
ASRC 0
ASRC 1
ASRC 2
ASRC 3
ASRC 4
ASRC 5
ASRC 6
ASRC 7
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Figure 46. ASRC Input Block
SigmaStudio
SigmaStudio represents the input to the DSP
SigmaStudio Input Channel Mapping
Corresponding Channels on ASRC Input
Block in SigmaStudio
Channel 0 and Channel 1
Channel 2 and Channel 3
Channel 4 and Channel 5
Channel 6 and Channel 7
Channel 8 and Channel 9
Channel 10 and Channel 11
Channel 12 and Channel 13
Channel 14 and Channel 15
UG-1135
are named