Cirrus Logic CK4970x4 - Manual (Page 39)

4-5 Copyright 2012 Cirrus Logic, Inc. DS898CK7
Programming the DSP on the CK49x Evaluation Board
CK49x User’s Manual
4.3.3 HDMI Audio Input
Right-click on the HDMI element to access the HDMI properties dialog and to select from the following
HDMI configuration options:
• InputFS field has the following options:
- 1 fs
- 2 fs
- 4 fs. (default)
Note:
The sampling rate selected in the InputFS field is the sample rate of the data as it’s streamed
from the HDMI port to the DSP. This rate is not the audio sampling rate for it’s possible to
receive a 4fs (192 kHz) stream of HDMI data that contains audio encoded at 48 kHz..
• Port RX Config: field has the following options:
- HD Low Bitrate
- HD High Bitrate (default)
- PCM 96 kHz
• PRX Port Select field has the following option:
- Port HDMI0
See Section 3.1.7 “Running a Multichannel PCM Application via HDMI” on page 3-7 for details on running
a sample .cpa file using an HDMI source.
Figure 4-7. DSP Composer Support for HDMI Audio Input via I 2 S