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參數資料
| 型號： | LM4548 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | Codec |
| 英文描述： | AC ’97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound |
| 中文描述： | 交流\u0026#39;97 Rev 2的編解碼器的采樣率轉換和國家3D聲音 |
| 文件頁數： | 8/18頁 |
| 文件大小： | 322K |
| 代理商： | LM4548 |
Pin Description
(Continued)
Analog I/O
(Continued)
Name
Pin
I / O
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.
AUX_R
15
I
VIDEO_L
16
I
VIDEO_R
17
I
CD_L
18
I
CD_GND
19
I
CD_R
20
I
MIC1
21
I
MIC2
22
I
LINE_IN_L
23
I
LINE_IN_R
24
I
LINE_OUT_L
35
O
LINE_OUT_R
36
O
MONO_OUT
37
O
LNLVL_OUT_L
39
O
LNLVL_OUT_R
41
O
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM4548A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC ’97 Rev 2 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound |
| LM4548AVH | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM4548AVH WAF | 制造商:Texas Instruments 功能描述: |
| LM4548AVHX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM4548VH | 制造商:Texas Instruments 功能描述: |
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