CDB4207
CS4207 HD Audio CODEC Development Platform
Features
? Demonstrates Recommended Layout and
Grounding Arrangements
? Analog I/O Use Standard 1/8” (3.5 mm) or 1/4”
(6.35 mm) Jacks With Presence Detection
? Analog Inputs (Passive)
– Single-ended and Differential MIC Inputs
– Single-ended Stereo Line-level Input
? Analog Outputs (Passive)
– Stereo Headphone Output with Test Loads
– Single-ended and Differential Line Outputs
? Digital I/O
– Optical S/PDIF I/O Jacks
– Digital MIC Input Headers
– HD Audio Bus Headers
– CS4207 GPIO Header
? Powered by HDA Bus Connection to PC
– Optionally Powered by Bench Supply or PC
Peripheral Power Supply Cable (Molex)
? Configured by Hardware Jumpers
– Power Supply Sources, Analog I/O Settings
Description
The CDB4207 is a flexible development platform de-
signed for easy evaluation of the CS4207 HD Audio
CODEC. Evaluation requires a PC with an HD Audio
Bus connector and an analog or digital audio signal
source for recording. Analog I/O is provided via 1/8” or
1/4” jacks. S/PDIF I/O is provided via optical connec-
tors. Two identical HD Audio Bus headers are provided
for connection to a PC.
The CDB4207 is configured via hardware jumper set-
tings to set up the analog I/O circuitry and select a
source for each CS4207 power supply rail. The analog
inputs and outputs support several signal types for com-
patibility with a variety of signal sources and analyzers.
The CS4207 can be powered from the HD Audio Bus
header, a PC peripheral power supply cable, or external
power supplies. Current sense resistors are included for
easy power calculations during system development.
ORDERING INFORMATION
? Current Sense Resistors for CS4207 Supplies
CDB4207
Evaluation Board
PC Peripheral
External Bench
HD Audio Bus
CS4207 GPIO
Lineout 1
Power
Supplies
Headers
Header
Stereo
*
Lineout 1
MICIN Mono
MICIN Stereo
*
Regulators
CS4207
Supplies
Current Sense
Jumper
Select
Balanced Left
Lineout 1
Balanced Right
MICIN Balanced
Left
Jumper
Resistors
Lineout 2
Stereo
*
MICIN Balanced
Right
Select
CS4207
Jumper
Select
Lineout 2
Balanced Left
Lineout 2
Balanced Right
Line In Stereo
*
Headphone
Optical
Output
*
S/PDIF In
Optical
S/PDIF Out 1
Digital Mic
Headers
* these connectors have presence detection
Copyright ? Cirrus Logic, Inc. 2009
(All Rights Reserved)
Optical
S/PDIF Out 2
NOV '09
DS880DB1
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