Cirrus Logic CDB42L73 - Manual

Copyright  Cirrus Logic, Inc. 2010
(All Rights Reserved) http://www.cirrus.com
Evaluation Board for the CS42L73
Features
 Analog Inputs
– Line-level In via 2x mono RCA jacks
– Microphone In via 2x mono 1/8” jacks
 Analog outputs
– Headphone out via 1x stereo 1/8” jack
– Line-level out via 2x mono RCA jacks
– Earphone out via terminal block
– Speakerphone out via terminal blocks
 S/PDIF interface via RCA/optical jacks
– Input: CS8416 digital audio receiver
– Output: CS8406 digital audio transmitter
 External digital I/O via stake headers
– Digital mic in
– Serial audio port I/O
– External I²C ™ control port I/O
 Flexible power-supply configuration
– USB, external power supply, or battery
 FlexGUI software control
– Windows ® compatible
– Predefined and user-configurable scripts
Description
The CDB42L73 board is a dedicated platform for testing
and evaluating the CS42L73, an ultralow power mobile
audio and telephony CODEC.
To allow comprehensive testing of CS42L73 features
and performance, extensive hardware and software
configurable options are available on the CDB42L73.
Hardware options, such as power-supply settings, are
configured via jumpers on the stake headers.
Software options, such as registry settings for the
CS42L73, are configured with the FlexGUI software,
which communicates with the CDB42L73 via USB from
a Windows
® compatible computer. In addition, digital
I/O headers on the CDB42L73 allow external control
signals (for example, an external DSP or microcontrol-
ler) to configure and interface with the CS42L73 and
other devices directly without the use of FlexGUI.
The CDB42L73 also serves as a good component and
layout reference for the CS42L73.
ORDERING INFORMATION
CDB42L73
Evaluation Board
USB
+5V, GND
(Bind. Post)
VA, VP, VCP, VL, VD_FILT
(Bind. Post)
Battery – VP only
(Header)
Regulators
Power Source Selection (Headers)
CS42L73
Current Sense Resistors for Power Measurement (Bypassable)
S/PDIF In
(Optical)
S/PDIF In
(RCA)
S/PDIF Out
(Optical)
S/PDIF In
(RCA)
CS8416
CS8406
Clocks
And
Data
Selection
(Headers)
Micro-
Controller
Canned
Oscillator
I2C and Board
Controls
Line In Stereo
(RCA)
Mic In 1 and 2
(1/8")
Digital Mic In
(Header)
Headphone Out
(1/8")
Lineout Stereo
(RCA)
Spkphone Out
(Term. Block & 1/8")
Spkphone/Line Out
(Term. Block & 1/8")
Earphone Out
(Term. Block & 1/8")
Direct External Digital
I/O
JUNE '10
DS882DB1
CDB42L73