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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.
Shunt left 2 pins on J20
and connect +5 V power
source between J2 and J3.
1
TDM input can be
provided to the board
via header J30.
10
9
PCM digital audio output can be
received from the board via
headers J24 and J25.
Shunt the middle
2 pins on J23.
2
Receive S/PDIF
output from board
via J28 or J27.
8
Shunt the top 2 pins on
J21 and J29.
3
4
Shunt the right 2
pins on all rows on
J26.
5
6
Provide AES3/EBU
input to board via
J19.
7
Set S3, S4 and S7 as needed.
*See section 3.2 for quick
setup descriptions.
Shunt the top 2 pins
on J31.
Figure 11. Hardware Mode Quick Start Guide
22
DS692DB2
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