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參數(shù)資料
| 型號(hào)： | SM6451AV |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | Audio Variable Volume IC |
| 中文描述： | 音頻集成電路體積變 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大?。?/td> | 155K |
| 代理商： | SM6451AV |
SM6451BV
NIPPON PRECISION CIRCUITS—7
MICROCONTROLLER INTERFACE
The SM6451BV uses a 3-wire serial interface comprising MDT (data), MCK (clock) and MLEN (latch enable)
to select channels and attenuation levels for the addressed device.
Input Timing
The microcontroller data input timing is shown in figure 1.
Data is shifted into the internal shift register on the rising edge of MCK, and the attenuation value is updated on
the rising edge of MLEN. Accordingly, data on MDT should be changed on the falling edge of MCK. The dot-
ted lines for MCK and MLEN also indicate valid timing.
Note, however, a minimum of 16 MCK input pulses are required.
Data Format
The format of microcontroller input data is shown in figure 2.
D15, D14
Don’t care.
D13, D12
Chip address bits. D13 corresponds to ADRS1 and D12 corresponds to ADRS2. The device is addressed only
when ADRS1:ADRS2 matches D13:D12.
Example 1: If D13 = LOW, D12 = HIGH and ADRS1 = LOW, ADRS2 = LOW, then the device is not
addressed since ADRS2 and D12 do not match.
Example 2: If D13/D12 = LOW and ADRS1/ADRS2 = LOW, then the device is addressed and all input data
is read and the attenuation settings updated.
D11, D10
Don’t care.
Figure 1. Microcontroller data input timing
Figure 2. Microcontroller data format
D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
MDT
MCK
MLEN
MDT
D
C
D
C
C
A
D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
C
A
D
C
D
C
C
S
C
S
A
D
A
D
A
D
A
D
A
D
A
D
A
D
A
D
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| SM6451BV | Audio Variable Volume IC |
| SM6451AVNIPPON | Audio Variable Volume IC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SM6451AVNIPPON | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Audio Variable Volume IC |
| SM6451B | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Audio Variable Volume IC |
| SM6451BV | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Audio Variable Volume IC |
| SM6452AM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Audio Variable Volume ICs |
| SM6452BM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Audio Variable Volume ICs |
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