MAX98090BEWJ+T Maxim Integrated, MAX98090BEWJ+T Datasheet - Page 135
MAX98090BEWJ+T
Manufacturer Part Number
MAX98090BEWJ+T
Description
Interface - CODECs 5V 130mW Stereo Headphone Amp
Manufacturer
Maxim Integrated
Datasheet
1.MAX98090BETL.pdf
(166 pages)
- Current page: 135 of 166
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MAX98090
Headphone Output Mixer and Gain Control
The headphone mixers can be configured to accept any
combination of signals from the playback DAC, the analog
microphone amplifiers, and the line input drivers (Table 69
Table 69. Left Headphone Mixer Configuration Register
Table 70. Right Headphone Mixer Configuration Register
Table 71. Headphone Mixer Control and Gain Register
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BIT
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
MIXHPRG[1:0]
MIXHPLG[1:0]
MIXHPR[5:0]
MIXHPL[5:0]
MIXHPRSEL
MIXHPLSEL
ADDRESS: 0x2B
ADDRESS: 0x29
ADDRESS: 0x2A
NAME
NAME
NAME
—
—
—
—
—
—
TYPE POR
TYPE POR
TYPE POR
R/W
R/W
R/W
R/W
R/W
R/W
—
—
—
—
—
—
—
—
—
—
—
—
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Selects microphone input 2 to left headphone mixer.
Selects microphone input 1 to left headphone mixer.
Selects line input B to left headphone mixer.
Selects line input A to left headphone mixer.
Selects right DAC output to left headphone mixer.
Selects left DAC output to left headphone mixer.
Selects microphone input 2 to right headphone mixer.
Selects microphone input 1 to right headphone mixer.
Selects line input B to right headphone mixer.
Selects line input A to right headphone mixer.
Selects right DAC output to right headphone mixer.
Selects left DAC output to right headphone mixer.
Select Headphone Mixer as Right Input Source (Default DAC Right Direct)
Select Headphone Mixer as Left Input Source (Default DAC Left Direct)
Right-Headphone Mixer Gain Configuration
Left-Headphone Mixer Gain Configuration
0: DAC only source (best dynamic range and power consumption)
1: Headphone mixer source
0: DAC only source (best dynamic range and power consumption)
1: Headphone mixer source
00: +0dB
01: -6dB
00: +0dB
01: -6dB
and Table 70). The input mixers also provide several atten-
uation options (Table 71). The mixer attenuation options of
-6dB, -9.5dB, and -12dB are sized to prevent clipping when
several full-scale input sources are selected.
10: -9.5dB
11: -12dB
10: -9.5dB
11: -12dB
Ultra-Low Power Stereo Audio Codec
DESCRIPTION
DESCRIPTION
DESCRIPTION
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—
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Maxim Integrated │ 135
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