NAU8812EVB Nuvoton Technology Corporation of America, NAU8812EVB Datasheet - Page 21

• Manufacturer Part Number: NAU8812EVB
• Description: BOARD EVAL FOR NAU8812
• Manufacturer: Nuvoton Technology Corporation of America
• Series: emPowerAudio™r

Specifications of NAU8812EVB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The signal from AUX stage can be amplified at the PGA Boost stage before connecting to the Boost Mixer by setting
a binary value from “001” - “111” to AUXBSTGAIN[2:0] address (0x2F). The path is disconnected by setting “000” to
the AUXBSTGAIN bits.
Signal from PGA stage to the PGA Boost Mixer is disconnected or muted by setting PGAMT[6] address (0x2D) to
HIGH. In this path the PGA boost can be a fixed value of +20dB or 0dB, controlled by the PGABST[8] address
(0x2F) bit.
The signal from MIC+ pin to the PGA Boost Mixer is disconnected by setting „000‟ binary value to PMICBSTGAIN[6:4]
address (0x2F) and any other combination connects the path.
BSTEN[4]
PGAMT[6]
AUXBSTGAIN[2:0]
PMICBSTGAIN[6:4]
PGABST[8]
emPowerAudio
Datasheet Revision 2.0
Bit(s)
™
0x2D
0x02
0x2F
0x2F
0x2F
Addr
Table 6: Registers associated with PGA Boost Stage Control
Enable PGA Boost Block
Mute control for input PGA
Boost AUX signal
Boost MIC+ signal
Boost PGA stage
Parameter
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0 = Boost stage OFF
1 = Boost stage ON
0=Input PGA not muted
1=Input PGA muted
Range: -12dB to +6dB @ 3dB increment
Range: -12dB to +6dB @ 3dB increment
0 = PGA output has +0dB
1 = PGA output has +20dB
Programmable Range
NAU8812
January 2011