max9796 Maxim Integrated Products, Inc., max9796 Datasheet - Page 23

• Manufacturer Part Number: max9796
• Description: Max9796 2.3w, High-power Class D Audio Subsystem With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

MONO+6dB in the Output Mode Control register allows
an extra 6dB of gain on the internal mono signal:
1 = Additional 6dB of gain is applied to the internal
Mono (M) signal path.
Table 9 shows how each of the three internal signals,
left (L), right (R), and mono (M), are mixed and routed
Table 7. Volume Control Settings (continued)
Table 8. Output Mode Control Register
Table 9. Output Modes
— = Amplifier off, R = Right signal
L = Left signal, M = Mono signal
Output Mode Control
B4
1
1
1
1
1
1
1
1
MODE
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
2.3W, High-Power Class D Audio Subsystem
B3
MVOL/LVOL/RVOL
0
0
0
0
0
0
0
0
B3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
______________________________________________________________________________________
B2
0
0
0
0
1
1
1
1
with DirectDrive Headphone Amplifiers
B2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
OUTMODE
B1
0
0
1
1
0
0
1
1
Output Mode Control
B1
B0
B7
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1
GAIN (dB)
B0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
B6
0
-23
-21
-19
-17
-15
-13
-11
-9
RECEIVER
M + L + R
MUTE
B5
L + R
0
—
—
—
—
—
—
—
—
—
—
—
—
M
0 = No additional gain is applied to the Internal Mono
(M) signal path.
The MAX9796 has four output amplifiers: a mono
receiver amplifier, a stereo DirectDrive headphone
amplifier, and one mono Class D amplifier.
to the various outputs.
Mono+6dB
B4
1
1
1
1
1
1
1
1
B4
LEFT HP
B3
MUTE
MVOL/LVOL/RVOL
1
1
1
1
1
1
1
1
L + M
L + M
—
—
—
—
—
—
—
—
—
M
M
L
L
B3
B2
0
0
0
0
1
1
1
1
OUTMODE (Table 9)
RIGHT HP
B1
0
0
1
1
0
0
1
1
B2
R + M
R + M
MUTE
—
—
—
—
—
—
—
—
—
M
M
R
R
B0
0
1
0
1
0
1
0
1
B1
GAIN (dB)
L+R+M
L+R+M
MUTE
L + R
L + R
SPK
—
—
—
—
—
—
—
—
—
M
M
-7
-6
-5
-4
-3
-2
-1
0
B0
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