Datasheet

MAX9880A
Low-Power, High-Performance
Dual I
2
S Stereo Audio Codec
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BITS FUNCTION
Left/Right Playback Volume. VOLL and VOLR control the playback volume for both the DAC and line input
audio signals.
SETTING GAIN (dB) SETTING GAIN (dB) SETTING GAIN (dB)
0x00 +9 0x0E -2 0x1C -39
0x01 +8.5 0x0F -3 0x1D -43
0x02 +8 0x10 -5 0x1E -47
0x03 +7.5 0x11 -7 0x1F -51
0x04 +7 0x12 -9 0x20 -55
0x05 +6.5 0x13 -11 0x21 -59
0x06 +6 0x14 -13 0x22 -63
0x07 +5 0x15 -15 0x23 -67
0x08 +4 0x16 -17 0x24 -71
0x09 +3 0x17 -19 0x25 -75
0x0A +2 0x18 -23 0x26 -79
0x0B +1 0x19 -27 0x27 -81
0x0C 0 0x1A -31
0x0D -1 0x1B -35
0x28 to 0x3F MUTE
VOLL/VOLR
Note: Gain settings apply when the headphone amplifier is configured in differential mode. In the single-
ended and capacitorless modes, the actual gain is 5dB lower. Assuming LOGL/LOGR = 0dB, line output
gain is 6dB lower.
Table 14. Playback Volume Registers (continued)
REGISTER B7 B6 B5 B4 B3 B2 B1 B0
REGISTER
ADDRESS
(SEE NOTE)
Left-Line Output Level 0 LOLM
0
0 LOGL 0x1E
Right-Line Output Level 0 LORM 0 0 LOGR 0x1F
BITS FUNCTION
LOLM/LORM
Left/Right Line Output Mute. LOLM and LORM mute both the DAC and line input audio signals.
0 = Line output is unmuted.
1 = Line output is muted.
Note: VSEN has no effect on the mute function. When LOLM or LORM is set the output is muted immediately
(ZD EN = 1) or at the next zero-crossing (ZDEN = 0).
Left/Right Line Output Gain. LOGL and LOGR set the line output gain according to the following information.
SETTING GAIN (dB) SETTING GAIN (dB)
0x00 0 0x08 -16
0x01 -2 0x09 -18
0x02 -4 0x0A -20
0x03 -6 0x0B -22
0x04 -8 0x0C -24
0x05 -10 0x0D -26
0x06 -12 0x0E -28
LOGL/LOGR
0x07 -14 0x0F -30
Table 15. Output Line-Level Registers
Grayed boxes = Not used.
Note: Register addresses listed are for I
2
C. To get the SPI address, add 0x200 with the following exception: Register 0xFF is not
accessible through SPI.