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MAX9880A View Datasheet(PDF) - Maxim Integrated

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MAX9880A Datasheet PDF : 70 Pages
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Low-Power, High-Performance
Dual I2S Stereo Audio Codec
Table 14. Playback Volume Registers (continued)
BITS
VOLL/VOLR
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
0x28 to 0x3F
MUTE
0x0D
-1
0x1B
-35
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 15. Output Line-Level Registers
REGISTER
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
ADDRESS
(SEE NOTE)
Left-Line Output Level
0
LOLM
0
0
LOGL
0x1E
Right-Line Output Level
0
LORM
0
0
LOGR
0x1F
Grayed boxes = Not used.
Note: Register addresses listed are for I2C. To get the SPI address, add 0x200 with the following exception: Register 0xFF is not
accessible through SPI.
BITS
LOLM/LORM
LOGL/LOGR
FUNCTION
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
(ZDEN = 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
0x07
-14
0x0F
-30
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