CODEC Motherboard Manual Version 1.3
Page 17 of 66
April 12, 2016
CODEC Motherboard
7.2.1 Device Settings
This changes the 5-volt or 3-volt settings of the NAU8822 outputs to match the actual voltage
supplied on the VDDSPK pin. Management of the power options is explained in other sections of
this document.
IMPORTANT: These settings should NOT be changed unless work is being done to change the
internal or external VDDSPK voltage. For reliable operation, it is very important that these
settings match the actual voltage on VDDSPK. The motherboard is set up by default to the 5-volt
settings for VDDSPK, and this default software selection matches this default configuration.
The other Device Control radio buttons change various features as indicated by the text in the
button. These change many different register values, and in many cases require a detailed
understanding of information in the device data sheet and/or design guide.
Reset: Writes to Register 0x00 of an NAU8822 device for its Reset condition
PowerUp: Turns on basic registers to put an NAU8822 device into an "on" condition
PowerDown: Sets an NAU8822 device into a low power "sleep" condition
MuteAllOutputs: Enables only the Mute function on NAU8822 outputs
EnableAllOutputs: Turns on power control bits for all outputs
DisableAllOutputs: Turns off power control bits for all outputs
LoadDefaultUpdateBits: Write to update bits to cause update feature to take place
Figure 7: DEVICE CONTROL PANEL - DEVICE SETTINGS
