Cirrus Logic CDB4270 - Manual

Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
http://www.cirrus.com
Evaluation Board for CS4270
Features
 Single-Ended Analog Audio Inputs and Outputs
 CS8416 S/PDIF Digital Audio Receiver
 Header for External Configuration of CS4270
 Header for External DSP Serial Audio I/O
 3.3V Logic Interfaces
 Pre-Defined Software Scripts
 Demonstrates Recommended Layout
 Windows ® -Compatible GUI Interface for Board
Configuration and Control
Description
Using the CDB4270 is an excellent way to evaluate the
CS4270 CODEC. Other equipment required includes
analog/digital audio sources/analyzer, a 5V power sup-
ply and a Windows-compatible
PC for the GUI.
System timing for the I²S, Left-Justified or Right-Justi-
fied audio data formats can be provided by the CS4270,
by the CS8416, or by a device connected to the on-
board DSP I/O header. The evaluation board may also
be configured to accept external timing and data signals
for operation in a user application during system
development.
RCA jacks are provided for the analog audio inputs and
outputs. Digital S/PDIF transmit or receive data I/O is
available via either RCA jacks or optical connectors.
The Windows GUI software provided allows for easy
configuration of the CDB4270. The GUI software com-
municates with the board via USB or serial port
connections to configure the CS4270 registers.
ORDERING INFORMATION
CDB4270 Evaluation Board
CDB4270
SEPTEMBER '06
DS686DB3
CS4270
CS8416
S/PDIF
Input
Single-Ended
Output
Single-Ended Input
Serial/USB Control Port
FPGA
CS8406
S/PDIF
Output
DSP HEADER
Osc.
ANALOG INPUT
ANALOG OUTPUT
Clocks
/Data
Hardware
Setup
MCLK BUS
A
D
C
/D
A C
C
lo
cks
& D
a ta
ADC/DAC
Clocks/
Data
C
lo
cks/
D
a ta
I 2 C/SPI Header
HW Setup
Switches
Hardware
Setup
Hardware
Setup