CDB8420 Cirrus Logic Inc, CDB8420 Datasheet - Page 5

• Manufacturer Part Number: CDB8420
• Description: EVALUATION BOARD FOR CS8420
• Manufacturer: Cirrus Logic Inc

Specifications of CDB8420

• Main Purpose: Audio, Sample Rate Converter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: CS8420
• Primary Attributes: Sample Rate Converter with Digital Audio Transmitter and Receiver
• Secondary Attributes: 44.1, 48, 96 kHz Output Sample Rates, AES/EBU, S/PDIF, EIAJ-340, GUI
• Description/function: Audio DSPs
• Operating Supply Voltage: 5 V
• Product: Audio Modules
• Silicon Manufacturer: Cirrus Logic
• Silicon Core Number: CS8420
• Kit Application Type: Data Converter
• Application Sub Type: Sample Rate Converter (SRC)
• Kit Contents: Evaluation Board
• Rohs Compliant: No
• For Use With/related Products: CS8420
• 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: 598-1782

2. CDB8420.EXE QUICK START GUIDE
2.1
1) Connect the CDB8420 to a 5V DC power sup-
2) Set: J11 to Optical, J16 to S/PDIF, enable J13
3) Connect the CDB8420 to the PC COM port us-
4) Apply power to the board.
5) Press the RESET switch (S5).
At this point, the RERR and PROC should be lit.
The hardware is now ready!
2.2
1) Create a directory called CDB8420 anywhere
2) Copy CDB8420.exe into this directory.
3) If you do not already have them, copy the in-
4) If desired, create a shortcut to CDB8420.exe on
At this point, you are ready to start up the software.
DS245DB4
ply.
(S/PDIF), and disable J15 (MUTE).
ing RS232 cable.
on your system.
cluded DLLs msvcrt.dll and mfc42.dll into
your \Windows\System directory.
your desktop.
Setting up the hardware:
Installing the software:
2.3
1) Double-click on CDB8420.exe or its shortcut.
2) If you get errors right away, the COM port
3) Click anywhere but inside one of the boxes, this
4) Select the COM port you are using to connect
5) Shut down the application, reset the board, and
2.4
1) Click anywhere but inside one of the boxes, this
2) Click on the Reset button. You should see the
3) Click on the Sample Rate Converter tab, then
4) Click on the Clock Sources tab, uncheck the
5) Check the performance of the board by doing
needs to be set properly.
brings up the Board Setup control panel.
to the CDB8420.
then restart the application.
brings up the Board Setup control panel.
TX and RX leds light up briefly.
set the SRC data source to AES3 Receiver.
Stop Internal Clocks box and click on RMCK
derived from AES3 input frame.
an FFT with a -1dBFS 1kHz sine wave for in-
put at 44.1kHz and 48kHz sample rates using
the optical input and optical output.
Starting up the software:
Starting up the Hardware:
CDB8420
5