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MAX97000 Datasheet(PDF) 24 Page - Maxim Integrated Products

Part No. MAX97000
Description  Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifier
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX97000 Datasheet(HTML) 24 Page - Maxim Integrated Products

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Audio Subsystem with Mono Class D
Speaker and Class H Headphone Amplifier
24
Mixers
Table 2. Input Register (continued)
Table 3. Mixer Registers
REGISTER
BIT
NAME
DESCRIPTION
2
PGAINB
Input B Preamp Gain. Set the input gain to maximize output signal level for a given input
signal range to improve the SNR of the system. PGAINB = 111 switches to a trimmed 20kI
feedback resistor for external gain setting.
1
VALUE
000
001
010
011
100
101
110
111
LEVEL (dB)
-6
-3
0
3
6
9
18
External
0
REGISTER
BIT
NAME
DESCRIPTION
0x01
7
HPLMIX
Left Headphone Mixer. Selects which of the four inputs is routed to the left headphone output.
6
VALUE
0000
xxx1
xx1x
x1xx
1xxx
INPUT
No input
INA1 (Disabled when INADIFF = 1)
INA2 (Select when INADIFF = 1)
INB1 (Disabled when INBDIFF = 1)
INB2 (Select when INBDIFF = 1)
5
4
3
HPRMIX
Right Headphone Mixer. Selects which of the four inputs is routed to the right headphone output.
2
VALUE
0000
xxx1
xx1x
x1xx
1xxx
INPUT
No input
INA1 (Disabled when INADIFF = 1)
INA2 (Select when INADIFF = 1)
INB1 (Disabled when INBDIFF = 1)
INB2 (Select when INBDIFF = 1)
1
0
0x02
3
SPKMIX
Speaker Mixer. Selects which of the four inputs is routed to the speaker output.
2
VALUE
0000
xxx1
xx1x
x1xx
1xxx
INPUT
No input
INA1 (Disabled when INADIFF = 1)
INA2 (Select when INADIFF = 1)
INB1 (Disabled when INBDIFF = 1)
INB2 (Select when INBDIFF = 1)
1
0


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