Cirrus Logic CDB42428 - Manual (Page 11)

CDB42428
11
3. CDB425XX.EXE USER'S GUIDE
3.1 Main Window
The main window of the CDB42428 control application allows the user to configure the CDB42428 inter-board rout-
ing of clocks and data, as well as setup the CS5361, CS8416 and CS8406 parts. To make changes to the CS5361,
CS8406, CS8416, or inter-board routing, the “Configure Board” radio button must be selected.
The RESET CS425xx button will reset only the part. The MASTER RESET button will reset the CS424xx, as well
as reset the board into its default state.
3.2 CS42428 Window
To configure the CS424xx, the “Configure CS424xx” radio button must be selected, then press the “CS424xx” but-
ton. This will bring up the complete CS424xx configuration window.
3.3 Preset Scripts
To make configuring the board and part easier, preset scripts can be saved and recalled. A preset script is a “snap-
shot” of all GUI board and component settings. This can done using the File pulldown menu and choosing Load or
Save. Scripts are saved with the default .LVS extension, and when loaded, will create a .LOG file. There are several
preset scripts included with the software. The following sections represent four common setup modes with scripts
for quick evaluation of the board.
3.4 Quick Start Preset - Analog In to Analog Out
To measure analog in to analog out performance, you will need the following:
• CS424xx Demonstration Board
• +18 VDC, -18 VDC, and +5 VDC power supplies
• Analog signal source and analyzer
• Windows® compatible computer with parallel port cable and CDB425xx software
Step 1 - Follow Initial Board Setup procedure as described above
Step 2 - Select Output Filter Jumpers
Set all CDB42428 analog output filter jumpers to the FILT2 settings.
Step 3 - Connect to Windows® Software
Connect the computer to the board and launch the CDB425xx software.
Step 4 - Connect Signal Source
Connect the analog output from the analyzer to the Left Analog Input J7. Connect J11 analog OUTA1 RCA to the
input of the analyzer. Set the analyzer output to 1.0 VRMS, 1 kHz. Set the analyzer input to measure signal level
and apply a 22 Hz-22 kHz filter.
Step 5 - Configure the Board
Using the Windows® software, load the preset script “Single Speed Analog In To Analog Out.LVS”. This preset will
configure the CS424xx to use OMCK as the master clock, DAC and ADC ports will be masters, and the
ADC_SDOUT data will source all DAC_SDIN inputs. The left/right analog inputs will appear at all odd/even analog
outputs. The single speed sample rate will be 48 kHz based upon the 24.576 MHz OMCK. You may load the similar
double speed or quad speed presets to investigate higher sample rates.
Step 6 - Measure Audio
You should now have audio appearing at the Analog A1 output.
3.5 Quick Start Preset - Analog In to Digital Out
To measure the analog to digital converter performance, you will need the following:
• CS424xx Demonstration Board
• +18 VDC, -18 VDC, and +5 VDC power supplies