Cirrus Logic CRD42L52 - Manual

Copyright © Cirrus Logic, Inc. 2008
(All Rights Reserved)
http://www.cirrus.com
Reference Design and Peripheral Driver Board for CS42L52
Reference Design Board (CRD42L52)
Features
 Ultra-Small Layout
 Stake Header for External System Connections
 1/8” Stereo Input Allows up to 2 Vrms Signals
 1/8” Stereo Headphone Output Jack
 Built-in Switch Control for CS42L52 SPKR/HP
Pin
 Stereo Full Bridge Speaker Output Terminal
 Complies with FCC class B and CISPR 22
Standards for Radiated Emissions
Peripheral Driver Board (CDB42LDB1)
Features
 Multiple Power Supply Options
– Three AAA Battery Source
– External Power Supply Header
 S/PDIF I/O (CS8416 Receiver)
– Optical and RCA Input Jacks
 S/PDIF I/O (CS8406 Transmitter)
– Optical and RCA Output Jacks
 FlexGUI S/W Control - Windows
®
Compatible
– Pre-Defined & User Configurable Scripts
Description
In addition to providing a reference for an ultra small lay-
out design, the purpose of the CRD42L52 is to allow a
quick and easy evaluation of the CS42L52 low power
stereo CODEC.
Two 1/8” stereo jacks on the CRD42L52 provide an in-
terface for analog line-level input and headphone-level
output connections to the CS42L52. Stereo differential
PWM speaker outputs from the CS42L52 can be moni-
tored on a pair of screw terminals on the CRD42L52.
The control port and serial audio interfaces are accessi-
ble via the I/O stake header used to attach the
CRD42L52 to the CDB42LDB1.
The CDB42LDB1 is a peripheral driver board that pro-
vides clock/data, control logic and power supply to the
CRD42L52. Digital data is transmitted and received via
S/PDIF optical and RCA connectors. The CRD42L52
can be programmed by using the Windows Compatible
FlexGUI software provided. Power is derived either
from three AAA batteries or from an external supply on
the CDB42LDB1 driver board and is routed to the
CRD42L52 via the I/O stake header.
ORDERING INFORMATION
CRD42L52 Reference Design
CDB42LDB1 Driver Board
CS42L52
Left
Right
+
-
+
-
I²C
Control
Port
SAI
Power
Supply
Line
Input
Headphone
Output
Speaker
J5
Microcontroller
S/PDIF Rx
CS8416
S/PDIF Tx
CS8406
12.288 MHz
External
Power
S/PDIF
Input
S/PDIF
Output
J4
J3
USB
I/O Header
AAA Battery
Clip
MCLK
Serial Audio Interface
I²C Control Port
Interface
Micro Reset
Pushbutton
CRD
Placeholder
CRD42L52
CDB42LDB1
APRIL '08
DS680RD1
CRD42L52