CDB3318 Datasheet, PDF (5/16 Pages) Cirrus Logic – Evaluation Board for CS3318

CDB3318
2. PC SOFTWARE CONTROL
The CDB3318 is designed for use with the Microsoft Windows based FlexGUI graphical user interface. This inter-
face provides comprehensive control over the CS3318’s internal registers via a PC’s USB or RS-232 port.
The FlexGUI software may be downloaded and installed from www.cirrus.com/msasoftware.
Step-by-step instructions for using the FlexGUI are provided as follows:
1. Download and install the FlexGUI software from www.cirrus.com/msasoftware.
2. Connect the CDB3318 to a host PC using the supplied USB cable or a 9-pin serial cable.
3. Apply positive power, negative power, and ground to the VA+, VA-, and GND binding posts respectively.
4. Launch the FlexGUI software. The GUI will load and be displayed.
5. Un-check the “Power Down CS3318” check box to allow audio to pass through the device.
2.1 CS3318 Controls Tab
The CS3318 Controls tab provides a high-level intuitive interface to many of the configuration options of the
CS3318. Control over the state of the CS3318’s MUTE and RESET input pins is also provided.
Figure 1. CS3318 Controls Tab
The Master X Mask check boxes are used to map each channel to the master controls. These check-boxes
reflect the state of their associated Master X Mask bits; when checked, the channel is un-masked.
The sliders facilitate control over the Ch X Volume registers, providing gain and attenuation in ½ dB steps.
The +¼ dB Gain check boxes are used to add an additional ¼ dB of gain to the volume level displayed for
each channel.
See the CS3318 datasheet for complete internal register descriptions.
DS693DB2
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