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參數(shù)資料
| 型號： | TDA7431 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP42 |
| 封裝： | 0.600 INCH, SDIP-42 |
| 文件頁數(shù)： | 21/21頁 |
| 文件大?。?/td> | 431K |
| 代理商： | TDA7431 |
I
2C BUS INTERFACE
Data transmission from microprocessor to the
TDA7430/TDA7431 and viceversa takes place
through the 2 wires I
2C BUS interface, consisting
of the two lines SDA and SCL (pull-up resistors to
positive supply voltage must be connected).
Data Validity
As shown in fig. 3, the data on the SDA line must
be stable during the high period of the clock. The
HIGH and LOW state of the data line can only
change when the clock signal on the SCL line is
LOW.
Start and Stop Conditions
As shown in fig.4 a start condition is a HIGH to
LOW transition of the SDA line while SCL is
HIGH. The stop condition is a LOW to HIGH tran-
sition of the SDA line while SCL is HIGH.
Byte Format
Every byte transferred on the SDA line must con-
tain 8 bits. Each byte must be followed by an ac-
knowledge bit. The MSB is transferred first.
Acknowledge
The master (
P) puts a resistive HIGH level on the
SDA line during the acknowledge clock pulse (see
fig. 5). The peripheral (audioprocessor) that ac-
knowledges has to pull-down (LOW) the SDA line
during this clock pulse.
The audioprocessor which has been addressed
has to generate an acknowledge after the recep-
tion of each byte, otherwise the SDA line remains
at the HIGH level during the ninth clock pulse
time. In this case the master transmitter can gen-
erate the STOP information in order to abort the
transfer.
Transmission without Acknowledge
Avoiding to detect the acknowledge of the audio-
processor, the
P can use a simpler transmission:
simply it waits one clock without checking the
slave acknowledging, and sends the new data.
This approach of course is less protected from
misworking.
Figure 3: Data Validity on the I
2CBUS
Figure 4: Timing Diagram of I
2CBUS
Figure 5: Acknowledge on the I
2CBUS
TDA7430 - TDA7431
9/21
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7431S | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX AND VOICE CANCELLER |
| TDA7432 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:BASIC FUNCTION AUDIO PROCESSOR |
| TDA7432D | 功能描述:音頻 DSP Basic Signal Process RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TDA7432D013TR | 功能描述:音頻 DSP Basic Signal Process RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TDA7433 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:BASIC FUNCTION AUDIO PROCESSOR |
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