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參數(shù)資料
| 型號(hào)： | LC75411WS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP48 |
| 封裝： | SQFP-48 |
| 文件頁數(shù)： | 21/33頁 |
| 文件大?。?/td> | 669K |
| 代理商： | LC75411WS |
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(3) Zero-cross switching control method
The zero-cross switching control method consists of setting the zero-cross control bits to the zero-cross detection
mode (D36, D37 = 0), and specifying the detection blocks (D38, D39) before transmitting the data. These control bits
are latched immediately following data transfer, that is to say beforehand in sync with the falling edge of CE, so when
updating data of volumes, etc., it is possible to perform mode setting and zero-cross switching with one data transfer.
An example of control when updating the data of the volume block is shown below.
(4) Zero-cross timer setting
If the input signal becomes lower than the zero-cross comparator detection sensitivity, or if only low-frequency
signals are input, zero-cross detection continues to be impossible, and data is not latched during this time.
The zero-cross timer can set a time for forcible latch during such a status when zero-cross detection is not possible.
(5) Cautions related to serial data transfer
1. To ensure that the high-frequency digital signals transferred to the CL, DI, and CE pins do not spill over to the
analog signal block, either guard these signal lines with a ground pattern, or perform transmission using shielded
wires.
2. The data format of the LC75411ES and 75411WS uses 8-bit addresses and 44-bit data. When sending data using
multiples of 8 (when sending 48 bits), use the method described in Figure 1.
Method for Receiving Data Using Multiple of 8 of LC75411ES and 75411WS
Figure 1
For example, to set 25 ms,
using T = 0.69CR and C = 0.033 F,
we obtain
Normally, a value between 10 ms and 50 ms is set.
Zero-cross detection
mode setting
Volume block
setting
No. 6928-28/33
LC75411ES, 75411WS
D36
D37
D38
D39
0
1
0
R=
1.1 M
25
× 10–3
0.69
× 0.033 × 10 –6
D43
D42
D41
D40
D39
D38
D37
D36
D3
D2
D1
D0
X
Test mode control
Input switching control
Dummy data
X : don’t care
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC75411WS-E | 制造商:ON Semiconductor 功能描述:ELECTRONIC VOLUME - Trays |
| LC75411WS-UF-E | 功能描述:多媒體雜項(xiàng) RoHS:否 制造商:Texas Instruments 類型: 通道數(shù)量: 轉(zhuǎn)換速率:540 Mbps 分辨率: 封裝 / 箱體:SOIC-16 封裝:Tube |
| LC75412E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Electronic Volume Controller for Car Audio Systems |
| LC75412EH-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LC75412W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Electronic Volume Controller for Car Audio Systems |
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