Datasheet

LM49350, LM49350RLEVAL
SNAS359D –SEPTEMBER 2008–REVISED JUNE 2012 www.ti.com
The LM49350 includes two separate and independent DSP blocks, one for the DAC and the other for the ADC.
The digital mixer also allows both DSP blocks to be cascaded together in either order so that the DSP effects
from both blocks can be combined into the same signal path. For example, the 5 band parametric EQ of each
DSP block can be combined together to form a 10 band parametric EQ for added flexibility.
This register is used to control the LM49350's digital mixer:
Table 33. 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
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