Cirrus Logic CDB4272 - Manual

1
Copyright  Cirrus Logic, Inc. 2003
(All Rights Reserved)
Cirrus Logic, Inc.
www.cirrus.com
CDB4272
Evaluation Board For CS4272
Features
Differential Analog Inputs
CS8406 S/PDIF digital audio transmitter
CS8416 S/PDIF digital audio receiver
Header for optional external configuration of
CS4272
Header for external DSP serial audio I/O
3.3V to 5.0V Logic Interface
Demonstrates recommended layout and
grounding arrangements
Microsoft Windows
®
compatible software
interface to configure CS4272 and inter-
board connections
ORDERING INFORMATION
CDB4272 Evaluation Board
Description
The CDB4272 demonstration board is an excellent
means for evaluating the CS4272 stereo CODEC. Eval-
uation requires an analog/digital signal source and
analyzer, and power supplies. Optionally, a Windows
®
PC compatible computer may be used to evaluate the
CS4272 in control port mode.
System timing can be provided by the CS4272, by the
CS8416 phase-locked to its S/PDIF input, by an I/O
stake header or by an on-board oscillator. RCA phono
jacks are provided for the CS4272 analog outputs . Bal-
anced XLR jacks are provided for the CS4272 analog
inputs. Digital data I/O is available via RCA phono or op-
tical connectors to the CS8416 and CS8406.
Microsoft Windows
®
software provides a GUI to make
configuration of the board easy. The software communi-
cates through the PC’s parallel port to configure the
hardware so that all features of the CS4272 can be eval-
uated. The evaluation board may also be configured to
accept external timing and data signals for operation in a
user application during system development.
I
CS4272
Differential
Analog
Inputs
Control Port
CS8406
S/PDIF
Transmitter
CS8416
I/O
Header for
Clocks &
Data
Oscillator
S/PDIF
Output
S/PDIF
Input
MCLK
LRCK
SCLK
SDIN
SDOUT
Differential to
Single-Ended
Analog
Outputs
S/PDIF
Receiver
SEPT ‘03
DS593DB2