CDB8420 Cirrus Logic Inc, CDB8420 Datasheet

EVALUATION BOARD FOR CS8420

CDB8420

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

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
Features
Preliminary Product Information
http://www.cirrus.com
Asynchronous Sample Rate Conversion
Input to output conversion ratio as large as
1:3 or 3:1
Receives and transmits AES/EBU, S/PDIF
and EIAJ-340 compatible digital audio
Runs from a single 5 Volt supply.
Crystals are supplied to allow operation at
44.1 kHz, 48 kHz, and 96 kHz output sample
rates.
Digital patch area.
I
S/PDIF In
Optical In
AES 3 In
Evaluation Board for CS8420
Amtel
µC
Copyright
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
CS8420
(All Rights Reserved)
Cirrus Logic, Inc. 2003
Description
The CDB8420 is designed to allow rapid evaluation of
the CS8420. Because of the high performance of the
CS8420, the board is set up for easy connection to an
Audio Precision or a Rohde and Schwarz test system.
Currently available A/D and D/A converters are not ade-
quate to test the full performance of the device.
Input and output data may independently be set to either
AES/EBU or S/PDIF in optical or coaxial physical
formats.
Windows 98 PC software provides a GUI interface to
make configuration easy. The software communicates
through the PC’s RS232 port to a micro-controller on the
evaluation board that controls the CS8420. All the possi-
ble software modes of the CS8420 may be tested.
ORDERING INFORMATION
CDB8420
RS232 port to PC
Optical Out
S/PDIF Out
AES 3 Out
CDB8420
Evaluation Board
DS245DB4
Dec ‘03
1

Related parts for CDB8420

CDB8420 Summary of contents

Page 1

... AES 3 In Preliminary Product Information http://www.cirrus.com Description The CDB8420 is designed to allow rapid evaluation of the CS8420. Because of the high performance of the CS8420, the board is set up for easy connection to an Audio Precision or a Rohde and Schwarz test system. Currently available A/D and D/A converters are not ade- quate to test the full performance of the device ...

Page 2

... CDB8420.EXE USER'S GUIDE ................................................................................................ 6 3.1 Main Window ..................................................................................................................... 6 3.2 Board Setup ....................................................................................................................... 7 3.3 Script file syntax ................................................................................................................. 7 LIST OF FIGURES Figure 1. CDB8420 Control Panel Main Window ............................................................................ 6 Figure 2. Board Setup Panel ........................................................................................................... 7 Figure 3. CS8420 Sample Rate Converter...................................................................................... 8 Figure 4. Atmel AVR RISC Micro-controller .................................................................................... 9 Figure 5. Power Supplies and Reset Circuit.................................................................................. 10 Figure 6 ...

Page 3

... OVERVIEW The CDB8420 evaluation board contains a CS8420 and the supporting circuitry necessary for it to op- erate. The input and output options include AES3 and S/PDIF in optical and coaxial formats. In soft- ware mode, the control registers of the CS8420 are set by an Atmel AVR RISC micro-controller. A ...

Page 4

... OPTICAL INPUT disabled AES3 Specifies output as AES3 XLR S/PDIF Specifies output as coaxial S/PDIF ENABLE S/PDIF OUTPUT enabled DISABLE S/PDIF OUTPUT disabled ENABLE Enables MUTE when in hardware mode 1 DISABLE Disables MUTE when in hardware mode 1 Table 2. CDB8420 Jumper Settings CDB8420 FUNCTION SELECTED DS245DB4 ...

Page 5

... CDB8420.EXE QUICK START GUIDE 2.1 Setting up the hardware: 1) Connect the CDB8420 power sup- ply. 2) Set: J11 to Optical, J16 to S/PDIF, enable J13 (S/PDIF), and disable J15 (MUTE). 3) Connect the CDB8420 to the PC COM port us- ing RS232 cable. 4) Apply power to the board. 5) Press the RESET switch (S5). ...

Page 6

... CDB8420.EXE USER'S GUIDE 3.1 Main Window The CDB8420 Control Panel allows you to view and access the data flow configuration of the CS8420. Clicking the right mouse button in any of the boxes will bring up a property menu containing all the register bits relevant to that block, as well as some high level functions, such as data sources and formatting options ...

Page 7

... DITH 1 write 2 3 0x10 12h 13 Table 3. Script file syntax description Figure 2. Board Setup Panel CDB8420 used for single line comments call an external script file named "scriptfile" assert reset of the CS8420 de-assert reset of the CS8420 write register 1 with hex 30 ...

Page 8

... OMCK 7 8 OSCLK 5 6 OLRCK 3 4 SDOUT RMCK ISCLK ILRCK 3 4 SDIN CDB8420 1 DS245DB4 ...

Page 9

... A8 PC1 36 A9 PC2 37 A10 PC3 38 A11 PC4 39 A12 PC5 40 A13 OC PC6 1 41 A14 C PC7 11 42 ALE 43 D8 PA7(AD7 PA6(AD6 PA5(AD5 PA4(AD4 PA3(AD3 CDB8420 PB6 16 PB5 15 PB4 14 PB3/CDOUT 13 PB2/CDIN 12 PB1/CCLK 11 PB0/CS 10 PE7 9 PE6 8 PE5 7 PE4 6 PE3 5 PE2 4 PE1/TXD 3 PE0/RXD 2 /PEN INH ...

Page 10

... CDB8420 DS245DB4 ...

Page 11

... DS245DB4 CDB8420 11 ...

Page 12

... CDB8420 DS245DB4 ...

Page 13

... DS245DB4 CDB8420 13 ...

Page 14

... I2C is a registered trademark of Philips Semiconductor. Purchase of I2C Components of Cirrus Logic, Inc., or one of its sublicensed Associated Companies conveys a license under the Philips I2C Patent Rights to use those components in a standard I2C system. 14 Revision History Changes Updated schematics. Moved legal statement to end of document and updated. Added revision block. CDB8420 DS245DB4 ...

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