4
DS773DB1
CDB42L55
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
for details on how the various
components on the board interface with each other in different board configuration modes. Refer to
for descriptions on control settings in the Cirrus FlexGUI software.
.
Figure 1. Quick Start Board Layout
Set desired jumper
settings for
J12,J4,J2 and J3.
1
2
3
4
5
6
7
Set jumper settings for VL to 3.3V
and VCP,VLDO and VA to 1.8V
J48,J53,J52, J74, J7 and
J11 should be shunted
Set Board Power setting to USB
Left pins on J109 and
J104 should be
shunted
Provide digital inputs to
the board either through
the S/PDIF optical or
RCA connectors or
through the PSIA I/O
header J78.
Receive digital outputs from the board
either through the S/PDIF optical or
RCA phono connectors or through the
PSIA I/O header J40.
Monitor analog outputs via HP or Line Channel RCA
connectors or HP stereo jack
Apply analog inputs
9
10
Connect USB to board. Open Flex
GUI software on PC and load
quick setup script.
8
Summary of Contents for CDB42L55
Page 25: ...DS773DB1 25 CDB42L55 8 CDB42L55 SCHEMATICS Figure 37 CS42L55 Analog I O Schematic Sheet 1 ...
Page 26: ...26 DS773DB1 CDB42L55 Figure 38 S PDIF Digital Interface Schematic Sheet 2 ...
Page 27: ...DS773DB1 27 CDB42L55 Figure 39 PLL oscillator and external I O connections Schematic Sheet 3 ...
Page 28: ...28 DS773DB1 CDB42L55 Figure 40 Microcontroller and FPGA Schematic Sheet 4 ...
Page 29: ...DS773DB1 29 CDB42L55 Figure 41 Power Schematic Sheet 5 ...
Page 30: ...30 DS773DB1 CDB42L55 9 CDB42L55 LAYOUT Figure 42 Silk Screen ...
Page 31: ...DS773DB1 31 CDB42L55 Figure 43 Top Side Layer ...
Page 32: ...32 DS773DB1 CDB42L55 Figure 44 GND Layer 2 ...
Page 33: ...DS773DB1 33 CDB42L55 Figure 45 Power Layer 3 ...
Page 34: ...34 DS773DB1 CDB42L55 Figure 46 Bottom Side Layer ...
Page 35: ...DS773DB1 35 CDB42L55 10 REVISION HISTORY Revision Changes DB1 Initial Release ...
