SM5879AV Datasheet, PDF (15/20 Pages) Nippon Precision Circuits Inc – 3rd-order , 2-channel D/A Converter

SM5879AV
Bass Boost
Two types of bass boost and gain modification can be
set by either parallel or microcontroller.
Table 3.
Parallel setting
pin name
Microcontroller
setting flag
BB1
FBB1
H
H
L
L
BB2
FBB2
H
L
H
L
Mode
Flat 1
Bass boost MIN
Bass boost MAX
Flat2
3
2 ^{Max. Chrasteristic}
1
Flat1 (0dB)
0
-1
Min. Charasteristic
-2
-3
-4
-5
-6
-7
Flat2 (-8dB)
-8
-9
10
100
1000
10⁴
10⁵
Frequency (Fs)
Figure 5. Bass boost mode frequency response
Bass boost detection output
With microcontroller setting (when P/M is LOW),
the 21st pin is the BBON output pin and functions as
output that detects the bass boost mode.
BBON output is LOW when the bass boost mode is
set to Flat 1 and HIGH in all other cases.
Table 4.
Microcontroller
setting flag
BB1
H
H
L
L
BB2
Mode
BBON pin
H
Flat 1
L
L
Bass boost MIN
H
H
Bass boost MAX
H
L
Flat 2
H
NIPPON PRECISION CIRCUITS—15