Cirrus Logic CDB42L51 - Manual

Copyright © Cirrus Logic, Inc. 2007
(All Rights Reserved) http://www.cirrus.com
Evaluation Board for CS42L51
Features
 MUXed Analog Input
– Stereo RCA Inputs
– Two Microphone Input Jacks
 MUXed Analog Output
– Stereo RCA Output (w/Optional Load or
LPF)
– Stereo Headphone Jack
– Mono Speaker Driver w/Banana Posts
 8 kHz to 96 kHz S/PDIF Interface
– CS8415 Digital Audio Receiver
– CS8406 Digital Audio Transmitter
 I/O Stake Headers
– External Control Port Accessibility
– External DSP Serial Audio I/O Accessibility
 Independent, Regulated Supplies
 1.8 V to 3.3 V Logic Interface
 Hardware Control
– 11 Pre-Defined Switch Settings
 FlexGUI S/W Control - Windows ® Compatible
– Pre-Defined & User-Configurable Scripts
 Layout and Grounding Recommendations
Description
The CDB42L51 evaluation board is an excellent means
for evaluating the CS42L51 CODEC. Evaluation re-
quires an analog/digital signal source and analyzer, and
power supplies. Optionally, a Windows
PC-compatible
computer may be used to evaluate the CS42L51 in Soft-
ware Mode.
System timing can be provided by the CS8415, by the
CS42L51 with supplied master clock, or by an I/O stake
header with a DSP connected.
RCA phono jacks are provided for the CS42L51 analog
inputs and outputs. 1/8th inch jacks are also available
for microphone input and headphone output. Digital
data I/O is available via RCA phono or optical connec-
tors to the CS8415 and CS8406.
The Windows software provides a GUI to make config-
uration of the CDB42L51 easy. The software
communicates through the PC’s serial port to configure
the control port registers so that all features of the
CS42L51 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.
ORDERING INFORMATION
CDB42L51
Evaluation Board
Analog Output
(Line + Headphone)
Analog Input
(Line + MIC)
Software Mode
Control Port
CS42L51
S/PDIF Input
(CS8415)
S/PDIF Output
(CS8406)
Clocks/Data Header
I²C/SPI Header
FPGA
Oscillator
(socket)
Reset
MCLK
Reset
Reset
MCLK
Reset
Hardware Mode
Switches
OCTOBER '07
DS679DB2
CDB42L51