Rainbow Electronics MAX9867 - Manual (Page 37)

MAX9867
Ultra-Low Power Stereo Audio Codec
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BITS FUNCTION
LILM/LIRM
Line-Input Left/Right Playback Mute
0 = Line input is connected to the headphone amplifiers.
1 = Line input is disconnected from the headphone amplifiers.
Line-Input Left/Right Gain
SETTING GAIN (dB) SETTING GAIN (dB)
0x0 +24 0x8 +8
0x1 +22 0x9 +6
0x2 +20 0xA +4
0x3 +18 0xB +2
0x4 +16 0xC 0
0x5 +14 0xD -2
0x6 +12 0xE -4
LIGL/LIGR
0x7 +10 0xF -6
LVOLFIX
Fix Line Input Volume
0 = Line input to headphone output volume tracks VOLL and VOLR bits.
1 = Line input to headphone output volume fixed at VOLL and VOLR bits.
See the Digital Audio Interface section.
Table 10. Line Input Registers (continued)
Playback Volume
The MAX9867 incorporates volume and mute control to
allow level control for the playback audio path. Program
registers 0x10 and 0x11 to set the desired volume. See
Table 11.
Table 11. Playback Volume Registers
REGISTER B7 B6 B5 B4 B3 B2 B1 B0
REGISTER
ADDRESS
Left Volume Control 0 VOLLM VOLL 0x10
Right Volume Control 0 VOLRM VOLR 0x11