Cirrus Logic CDB8422 - Manual (Page 22)

22 DS692DB2
CDB8422
3. HARDWARE MODE
Powering up the CDB8422 without a USB connection to a PC operates the evaluation board in hardware mode. In
this mode, on-board DIP switches allow the user to configure the CDB8422 without the use of a PC and GUI. How-
ever, only a subset of configuration options are available in hardware mode.
3.1 Quick Start Guide
Figure 11 below is a simplified quick start up guide made for user convenience. The user may choose from
steps 7 through 10 depending on the desired measurement. Refer to Section 3.2 for details on how the var-
ious components on the board interface with each other in different board configurations. Refer to Section
3.3 for descriptions on hardware switches S3, S4, and S7 control settings.
Figure 11. Hardware Mode Quick Start Guide
Provide AES3/EBU
input to board via
J19.
1
7
PCM digital audio output can be
received from the board via
headers J24 and J25.
3
Shunt the right 2
pins on all rows on
J26.
4
Shunt the middle
2 pins on J23.
2
Receive S/PDIF
output from board
via J28 or J27.
Shunt the top 2 pins
on J31.
6
Shunt left 2 pins on J20
and connect +5 V power
source between J2 and J3.
5
Set S3, S4 and S7 as needed.
*See section 3.2 for quick
setup descriptions.
8
9
TDM input can be
provided to the board
via header J30.
10
Shunt the top 2 pins on
J21 and J29.