Quick Set Buttons; Direct I C Register Access; Usb Power - Analog Devices SSM2380 User Manual

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QUICK SET BUTTONS

The GUI includes a collection of buttons to switch quickly
to several predefined configurations. See Figure 13 and the
following three sections for details.
Figure 13. Preset Button Section of
RESET
RESET first initializes the SSM2380
Control Register R8. It then clears all previously stored
read/write windows and ensures that all registers are set
to the proper default value. The RESET button should be
clicked every time power is disrupted from the
to synchronize the SSM2380
Music Optimized
By clicking the Music Optimized preset button, the following
occurs:
•
Left and right channels are enabled.
•
Gain for both left and right channels is set to 18 dB.
•
The ALC operation is enabled and tuned for optimized sound
quality for music playback. A slower attack time is used,
along with heavier compression and a slower release time.
Voice Optimized
By clicking the Voice Optimized preset button, the following
occurs:
•
Left and right channels are enabled.
•
Gain for both left and right channels is set to 18 dB.
•
The ALC operation is enabled and tuned for optimized
SPL level for voice playback. A faster attack time is used,
a small amount of compression before limiter operation,
and a faster release time.
DIRECT I 2 C REGISTER ACCESS
Within each subsection is direct access to the associated I
control register. If the user desires, data can be directly written
to the control register by typing the register data byte in hexa-
decimal format. Simply type the desired word in hexadecimal
format in the desired register write window. Click the Write
button when ready to send this data to the SSM2380. The
associated subsection options from the main GUI section
are also updated. You can also check the register contents by
clicking the Read button. The register contents are displayed
in the text box next to each button.
SSM2380 GUI
by writing all 0s to
SSM2380
to the control software.
Figure 14. I

USB POWER

The 5 V power switch, described in the USB Power Switch
2 C
section, is activated by clicking 5V USB Power ON as shown
in Figure 15.
Rev. 0 | Page 10 of 20
Evaluation Board User Guide
2 C Register Direct Control of SSM2380
Figure 15. USB Power Control
GUI