CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 4

• Manufacturer Part Number: CDB42L55
• Description: Eval Bd Ultra Low Power Stereo Codec
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42L55

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42L55
• Primary Attributes: 2 Stereo Analog Inputs, Stereo Line and Headphone Outputs, S/PDIF Transmitter and Receiver
• Secondary Attributes: GUI, USB, RS232, I2C Interfaces, USB or External or Battery Power Supply
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 598-1506; CDB-42L55

4
1 QUICK START GUIDE
The following figure is a simplified quick-start guide made for user convenience. The guide configures the board with
a 1.8 V power supply to VLDO, VA and VCP and a 3.3 V power supply to VL. The user may choose from steps 7
through 10 depending on the desired measurement. Refer to
components on the board interface with each other in different board configuration modes. Refer to
page 10
.
Connect USB to board. Open Flex
GUI software on PC and load
the board either through
Provide digital inputs to
quick setup script.
the S/PDIF optical or
through the PSIA I/O
RCA connectors or
header J78.
for descriptions on control settings in the Cirrus FlexGUI software.
6
7
Receive digital outputs from the board
RCA phono connectors or through the
either through the S/PDIF optical or
PSIA I/O header J40.
Set Board Power setting to USB
8
2
Figure 1. Quick Start Board Layout
Left pins on J109 and
J104 should be
5
shunted
1
Set jumper settings for VL to 3.3V
and VCP,VLDO and VA to 1.8V
Section 3 on page 8
Monitor analog outputs via HP or Line Channel RCA
connectors or HP stereo jack
9
for details on how the various
3
J48,J53,J52, J74, J7 and
J11 should be shunted
CDB42L55
Section 4 on
Set desired jumper
J12,J4,J2 and J3.
DS773DB1
Apply analog inputs
settings for
4
10