LM4548VHNOPB National Semiconductor, LM4548VHNOPB Datasheet - Page 8

• Manufacturer Part Number: LM4548VHNOPB
• Manufacturer: National Semiconductor

Specifications of LM4548VHNOPB

• Single Supply Voltage (typ): 3.3/5V
• Single Supply Voltage (min): 3/4.2V
• Single Supply Voltage (max): 5.5V
• Package Type: LQFP
• Lead Free Status / RoHS Status: Compliant

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Pin Description
Analog I/O
LNLVL_OUT_R
LNLVL_OUT_L
LINE_OUT_R
LINE_OUT_L
MONO_OUT
LINE_IN_R
LINE_IN_L
VIDEO_R
VIDEO_L
CD_GND
AUX_R
Name
CD_R
CD_L
MIC1
MIC2
(Continued)
Pin
15
16
17
18
19
20
21
22
23
24
35
36
37
39
41
(Continued)
I / O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
Functional Description
This line level input can be routed through the Input Mux and recorded by the right ADC. In
addition, this analog input gets summed into the right output stream. The amount of AUX_R
signal mixed in the right output stream can be adjusted from +12dB to −34.5dB in 1.5dB
steps as well as muted via register 16h.
This line level input can be routed through the Input Mux and recorded by the left ADC. In
addition, this analog input gets summed into the left output stream. The amount of VIDEO_L
signal mixed in the left output stream can be adjusted from +12dB to −34.5dB in 1.5dB steps
as well as muted via register 14h.
This line level input can be routed through the Input Mux and recorded by the right ADC. In
addition, this analog input gets summed into the right output stream. The amount of
VIDEO_R signal mixed in the right output stream can be adjusted from +12dB to −34.5dB in
1.5dB steps as well as muted via register 14h.
This line level input can be routed through the Input Mux and recorded by the left ADC. In
addition, this analog input gets summed into the left output stream. The amount of CD_L
signal mixed in the left output stream can be adjusted from +12dB to −34.5dB in 1.5dB steps
as well as muted via register 12h.
This input can be used to reject common mode signals on the CD_L and CD_R inputs.
CD_GND is an AC ground point and not a DC ground point. This input must be AC-coupled
to the source signal’s ground.
This line level input can be routed through the Input Mux and recorded by the right ADC. In
addition, this analog input gets summed into the right output stream. The amount of CD_R
signal mixed in the right output stream can be adjusted from +12dB to −34.5dB in 1.5dB
steps as well as muted via register 12h.
Either MIC1 or MIC2 can be selected via software and routed through the Input Mux for
recording. The 20dB boost circuit is enabled/disabled via register 0Eh. Also, the amount of
mic signal mixed in the output stream can be adjusted from +12dB to −34.5dB in 1.5dB
steps as well as muted via register 0Eh.
Either MIC1 or MIC2 can be selected via software and routed through the Input Mux for
recording. The 20dB boost circuit is enabled/disabled via register 0Eh. Also, the amount of
mic signal mixed in the output stream can be adjusted from +12dB to −34.5dB in 1.5dB
steps as well as muted via register 0Eh.
This line level input can be routed through the Input Mux and recorded by the left ADC. In
addition, this analog input gets summed into the left output stream. The amount of
LINE_IN_L signal mixed in the left output stream can be adjusted from +12dB to −34.5dB in
1.5dB steps as well as muted via register 10h.
This line level input can be routed through the Input Mux and recorded by the right ADC. In
addition, this analog input gets summed into the right output stream. The amount of
LINE_IN_R signal mixed in the right output stream can be adjusted from +12dB to −34.5dB
in 1.5dB steps as well as muted via register 10h.
This is a post-mixed output for the left audio channel. The level of this output can be
adjusted from 0dB to −45dB in 1.5dB steps as well as muted via register 02h.
This is a post-mixed output for the right audio channel. The level of this output can be
adjusted from 0dB to −45dB in 1.5dB steps as well as muted via register 02h.
This line level output is either the post-mixed output or the mic input. The level of this output
can be adjusted from 0dB to −45dB in 1.5dB steps as well as muted via register 06h.
This is a post-mixed output for the left audio channel. The level of this output can be
adjusted from 0dB to −45dB in 1.5dB steps as well as muted via register 04h.
This is a post-mixed output for the right audio channel. The level of this output can be
adjusted from 0dB to −45dB in 1.5dB steps as well as muted via register 04h.
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