NAU8812EVB Nuvoton Technology Corporation of America, NAU8812EVB Datasheet - Page 74

• 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

emPowerAudio
Datasheet Revision 2.0
Coefficient
0x20
Addr
Name
13.6. AUTOMATIC LEVEL CONTROL REGISTER
13.6.1. ALC1 REGISTER
ALCEN
D8
™
B2
ALCMXGAIN[2:0]
0
0
0
0
1
1
1
1
1
1


tan
tan
B1
A
0
0
1
1
0
0
1
1
D7
0








0
2
2
Maximum Gain
2
2


f
f
f
f
s
s
b
b
Name








B0
0
1
0
1
0
1
0
1
Bit
0
1
D6
0

Disabled
register bits)
Enabled

1
+11.25dB
+17.25dB
+23.25dB
+29.25dB
+35.25dB
+5.25dB
-6.75dB
-0.75dB

Mode
A
0
D5

Page 74 of 109
A
x
1
cos
ALCMXGAIN[2:0]
(PGA gain set by PGAGAIN
(ALC controls PGA gain)




2

f
s
ALC Enable
D4
f
ALCEN[8]
c




f
f
fs = sample frequency (Hz)
c
b
= center frequency (Hz)
= -3dB bandwidth (Hz)
B2
D3
ALCMNGAIN[2:0]
0
0
0
0
1
1
1
1
Notation
B1
Minimum Gain
0
0
1
1
0
0
1
1
D2
ALCMNGAIN[2:0]
B0
0
1
0
1
0
1
0
1
D1
Register Value (DEC)
+12dB
+18dB
+24dB
+30dB
Mode
-12dB
+6dB
-6dB
(then convert to 2‟s
0dB
NAU8812
NFCA0 = -A
NFCA1 = -A
January 2011
complement)
D0
0
1
x 2
x 2
Default
0x038
13
12