Cirrus Logic CDB43L22, Руководство пользователя

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6 DS792DB1
CDB43L22
necting headphones to either output jack, the on-board resistive load should be disconnected by removing
the jumpers on each stake header(J3 and J9).
The CDB43L22 also has A/B speaker output banana jacks (2 per A or B channel) and 1/8“ jack outputs (1
per A or B channel). Stake headers J15 and J19 allow one to short the differential outputs of Channel A and
B together, in order to monitor MONO PWM output from the CS43L22. The red banana jacks designate the
positive speaker terminal connection and the black jacks designate the negative terminal connection.
1.10 Control Port Connectors
The graphical user interface for the CDB43L22 (Cirrus Logic Flex GUI) allows the user to configure the
CS43L22 registers and other component registers via the on-board I²C control bus. The GUI interfaces with
the CDB via the USB connection to a PC.
Section 4 “Software Mode Control” on page 11 provides a de-
scription of the Graphical User Interface (GUI).
1.11 USB Connector
Connecting a USB port cable from a PC to the USB connector on the board and launching the Cirrus
FlexGUI software enables one to use the CDB43L22. Note: The USB port connection also provides DC
power to the board (except for VP). The minimum current required is approximately 300 mA. It may, there-
fore, be necessary to connect the CDB43L22 directly to the USB port on the PC as opposed to a hub or
keyboard port where current may be limited.