Keysight U8903B, Руководство пользователя

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A Appendixes
566 Keysight U8903B User’s Guide
Appendix 21: Typical DSI Test Configurations
The following sections describe the possible serial audio input and output configurations.
Configuration 1
In this configuration, the DUT uses the U8903B internal reference clock source as the
reference clock. The DUT receives the clock references and data from the U8903B.
Press on the FUNCTION panel to switch between audio generator or audio analyzer
mode, and press on the FUNCTION panel to switch to digital interface.
Figure A-4 DSI test configuration 1
1 At the digital generator, press DSI Config > Master Clock , and select On to enable the
master clock.
2 At the digital generator, press DSI Config > Sample Rate , and set the sample rate.
3 At the digital generator, press DSI Config > Word Length , and set the word length. The bit
clock rate is determined by the multiplication of the sample rate, word length, and
number of channels.
4 At the digital generator, press DSI Config > Multiplier , and select the multiplier. The
master clock rate is determined by the multiplication of the sample rate and multiplier.
5 At the digital generator, press DSI Config > Fsync Polarity , and select either Rising or
Falling as the edge synchronization to the leading edge of the frame clock.
NOTE
Refer to “ Appendix 19: DSI Input and Output Interface ” on page 564 for more information
on the pins assignment.
DUT
Bit clock
Frame Sync
Data Pin 3
Pin 4
Pin 5
Pin 1 Master clock
U8903B