Instruction Manual

Output Mode Control
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.
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.
MAX9796
2.3W, High-Power Class D Audio Subsystem
with DirectDrive Headphone Amplifiers
______________________________________________________________________________________ 23
B7 B6 B5 B4 B3 B2 B1 B0
Output Mode Control 1 0 0 Mono+6dB OUTMODE (Table 9)
Table 8. Output Mode Control Register
OUTMODE
MODE
B3 B2 B1 B0
RECEIVER LEFT HP RIGHT HP SPK
0 0000 — — — —
1 0001 M — — —
2 0010 — — — M
3 0011 — M M M
4 0100 — M M —
5 0101 — — — —
6 0110 L + R — — —
7 0 1 1 1 — — — L + R
8 1 0 0 0 — L R L + R
9 1001 — L R —
10 1010 — — — —
11 1 0 1 1 M + L + R — — —
12 1 1 0 0 — — — L+R+M
13 1 1 0 1 — L + M R + M L+R+M
14 1 1 1 0 — L + M R + M —
15 1 1 1 1 MUTE MUTE MUTE MUTE
Table 9. Output Modes
MVOL/LVOL/RVOL
B4 B3 B2 B1 B0
GAIN (dB)
10000 -23
10001 -21
10010 -19
10011 -17
10100 -15
10101 -13
10110 -11
10111 -9
MVOL/LVOL/RVOL
B4 B3 B2 B1 B0
GAIN (dB)
11000 -7
11001 -6
11010 -5
11011 -4
11100 -3
11101 -2
11110 -1
11111 0
Table 7. Volume Control Settings (continued)
Table 9 shows how each of the three internal signals,
left (L), right (R), and mono (M), are mixed and routed
to the various outputs.
— = Amplifier off, R = Right signal
L = Left signal, M = Mono signal