LM49352 Datasheet, PDF (58/112 Pages) Texas Instruments – Mono Class D Audio Codec Subsystem with Ground Referenced Headphone Amplifiers, Earpiece Driver, and Audio DSP

This register is used to control the LM49352's digital mixer:
TABLE 30. Input Levels 1 (0x40h)
Bits
Field
Description
1:0 PORT1_RX_L This programs the input level of the data arriving from the left receive channel of Audio Port 1.
_LVL
PORT1_RX_L_LVL
Level
00
0dB
01
–6dB
10
–12dB
11
–18dB
3:2 PORT1_RX_R This programs the input level of the data arriving from the right receive channel of Audio Port 1.
_LVL
PORT1_RX_R_LVL
Level
00
0dB
01
–6dB
10
–12dB
11
–18dB
5:4 PORT2_RX_L This programs the input level of the data arriving from the left receive channel of Audio Port 2.
_LVL
PORT2_RX_L_LVL
Level
00
0dB
01
–6dB
10
–12dB
11
–18dB
7:6 PORT2_RX_R This programs the input level of the data arriving from the right receive channel of Audio Port 2.
_LVL
PORT2_RX_R_LVL
Level
00
0dB
01
–6dB
10
–12dB
11
–18dB
TABLE 31. Input Levels 2 (0x41h)
Bits
Field
Description
1:0
ADC_L_LVL This programs the input level of the data arriving from the left ADC channel.
ADC_L_LVL
Level
00
0dB
01
–6dB
10
–12dB
11
–18dB
3:2
ADC_R_LVL This programs the input level of the data arriving from the right ADC channel.
ADC_R_LVL
Level
00
0dB
01
–6dB
10
–12dB
11
–18dB
5:4 INTERP_L_LVL This programs the input level of the data arriving from the left DAC's interpolator output.
INTERP_L_LVL
Level
00
0dB
01
–6dB
10
–12dB
11
–18dB
57
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