Cirrus Logic CDB4207 - Manual

Copyright
 Cirrus Logic, Inc. 2009
(All Rights Reserved)
http://www.cirrus.com
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
 Current Sense Resistors for CS4207 Supplies
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
CDB4207 Evaluation Board
CS4207
Lineout 1
Stereo
MICIN Mono
MICIN Stereo
Line In Stereo
Lineout 2
Stereo
Lineout 2
Balanced Left
Lineout 2
Balanced Right
*
these connectors have presence detection
Headphone
Output
Optical
S/PDIF In Optical
S/PDIF Out 1
Optical
S/PDIF Out 2
HD Audio Bus
Headers
CS4207 GPIO
Header
CS4207
Supplies
Regulators
Current Sense
Resistors
Digital Mic
Headers
External Bench
Supplies
PC Peripheral
Power
Jumper
Select
MICIN Balanced
Left
MICIN Balanced
Right
Jumper
Select
Lineout 1
Balanced Left
Lineout 1
Balanced Right
Jumper
Select
*
*
*
*
*
CDB4207
NOV '09
DS880DB1