lm49350rl National Semiconductor Corporation, lm49350rl Datasheet - Page 51

• Manufacturer Part Number: lm49350rl
• Description: High Performance Audio Codec Sub-system With A Ground-referenced Stereo Headphone Amplifier & An Ultra Low Emi Class D Loudspeaker Amplifier With Dual I2s/pcm Digital Audio Interfaces
• Manufacturer: National Semiconductor Corporation

Bits
1:0
3:2
5:4
7:6
Bits
This register is used to control the LM49350's digital mixer:
1:0
3:2
5:4
PORT1_RX_R
PORT2_RX_R
PORT1_RX_L
PORT2_RX_L
INTERP_L_LVL
ADC_R_LVL
ADC_L_LVL
Field
_LVL
_LVL
_LVL
_LVL
Field
This programs the input level of the data arriving from the left receive channel of Audio Port 1.
This programs the input level of the data arriving from the right receive channel of Audio Port 1.
This programs the input level of the data arriving from the left receive channel of Audio Port 2.
This programs the input level of the data arriving from the right receive channel of Audio Port 2.
This programs the input level of the data arriving from the left ADC channel.
This programs the input level of the data arriving from the right ADC channel.
This programs the input level of the data arriving from the left DAC's interpolator output.
TABLE 32. Input Levels 1 (0x40h)
TABLE 33. Input Levels 2 (0x41h)
PORT1_RX_R_LVL
PORT2_RX_R_LVL
PORT1_RX_L_LVL
PORT2_RX_L_LVL
INTERP_L_LVL
ADC_R_LVL
ADC_L_LVL
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
51
Description
Description
–12dB
–18dB
–12dB
–18dB
–12dB
–18dB
–12dB
–18dB
–12dB
–18dB
–12dB
–18dB
–12dB
–18dB
Level
–6dB
Level
–6dB
Level
–6dB
Level
–6dB
Level
–6dB
Level
–6dB
Level
–6dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
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