CDB4265
Evaluation Board for CS4265
Features
Single-ended Analog Inputs
Single-ended Analog Outputs
Coaxial and Optical Connections for CS4265
S/PDIF Transmitter Output
CS8416 S/PDIF Digital Audio Receiver
Header for Optional External Software
Configuration of CS4265
Header for External PCM Serial Audio I/O
3.3 V Logic Interface
Pre-defined Software Scripts
Demonstrates Recommended Layout and
Grounding Arrangements
Windows
®
Compatible Software Interface
to Configure CS4265 and Inter-board
Connections
ORDERING INFORMATION
CDB4265
I
Description
The CDB4265 evaluation board is an excellent means
for evaluating the CS4265 CODEC. Evaluation requires
an analog/digital signal source and analyzer, and power
supplies. A Windows
®
PC compatible computer must be
used to evaluate the CS4265.
System timing for the I²S, Left-Justified and Right-Justi-
fied interface formats can be provided by the CS4265,
the CS8416, or by a PCM I/O stake header with an ex-
ternal source connected.
RCA phono jacks are provided for the CS4265 analog in-
puts and outputs. Digital data I/O is available via RCA
phono or optical connectors to the CS8416 and CS4265.
The Windows
®
software provides a GUI to make config-
uration of the CDB4265 easy. The software
communicates through the PC’s serial port to configure
the control port registers so that all features of the
CS4265 can be evaluated. The evaluation board may
also be configured to accept external timing and data
signals for operation in a user application during system
development.
Evaluation Board
Passive Input Filter
Active Input Filter
Microphone Input
M
U
X
Passive Output Filter
Active Output Filter
CS4265
S/PDIF Output Circuits
Test Points
Control Port Interface
Master Clock
Canned
Oscillator
FPGA
Sub-clocks and Data
CS8416
Header
Cirrus Logic, Inc.
www.cirrus.com
Copyright
©
Cirrus Logic, Inc. 2005
(All Rights Reserved)
FEB ‘05
DS657DB1
CIRRUS [ CIRRUS LOGIC ]
