CDB42528 Cirrus Logic Inc, CDB42528 Datasheet - Page 10

• Manufacturer Part Number: CDB42528
• Description: BOARD EVAL FOR CS42528/CS49300
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42528

• Main Purpose: Audio, Audio Processing
• Embedded: Yes, DSP
• Utilized Ic / Part: CS49300, CS42528
• Primary Attributes: 8 Single-Ended Analog Inputs and Outputs, 4 S/PDIF Inputs and 2 S/PDIF Outputs
• Secondary Attributes: Parallel, RS422, RS232, UDSP Interfaces
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1503

3. CDB425XX.EXE USER'S GUIDE
3.1
The main window of the CDB42528 control application allows the user to configure the CDB42528 inter-board rout-
ing of clocks and data, as well as setup the CS5361 and CS8406 parts. To make changes to the CS5361, CS8406,
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 CS42528, as well
as reset the board into its default state.
3.2
To configure the CS42528, the “Configure CS425xx” radio button must be selected, then press the “CS425XX” but-
ton. This will bring up the complete CS42528 configuration window.
3.3
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 three common setup modes with scripts
for quick evaluation of the board.
3.4
To measure analog in to analog out performance, you will need the following:
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Step 1 - Follow Initial Board Setup procedure as described above
Step 2 - Select Output Filter Jumpers
Set all CDB42528 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 J12 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 22-22 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 CS42528 to use OMCK as the master clock, CX and SAI ports will be masters, and the CX_SDOUT
(ADC) data will source all CX_SDIN (DAC) inputs. The left/right analog inputs will appear at all odd/even analog out-
puts. The single speed sample rate will be 46.875kHz based upon the 24.000MHz 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
To measure the analog to digital converter performance, you will need the following:
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CS42528 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
CS42528 Demonstration Board
+18 VDC, -18 VDC, and +5 VDC power supplies
Main Window
CS425XX Window
Preset Scripts
Quick Start Preset - Analog In to Analog Out
Quick Start Preset - Analog In to Digital Out
CDB42528