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参数资料
| 型号： | TDA7429T |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP44 |
| 封装： | 10 X 10 MM, 1.40 MM HEIGTH, TQFP-44 |
| 文件页数： | 22/22页 |
| 文件大小： | 237K |
| 代理商： | TDA7429T |
Obsolete
Product(s)
- Obsolete
Product(s)
9/22
TDA7429
3I2C BUS INTERFACE
Data transmission from microprocessor to the TDA7429 and viceversa takes place through the 2 wires I2C BUS
interface, consisting of the two lines SDA and SCL (pull-up resistors to positive supply voltage must be connect-
ed).
3.1 Data Validity
As shown in fig. 8, 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.
3.2 Start and Stop Conditions
As shown in fig.9 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 transition of the SDA line while SCL is HIGH.
3.3 Byte Format
Every byte transferred on the SDA line must contain 8 bits. Each byte must be followed by an acknowledge bit.
The MSB is transferred first.
3.4 Acknowledge
The master (mP) puts a resistive HIGH level on the SDA line during the acknowledge clock pulse (see fig. 10).
The peripheral (audioprocessor) that acknowledges 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 reception 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 generate the STOP information in order to abort the transfer.
3.5 Transmission without Acknowledge
Avoiding to detect the acknowledge of the audioprocessor, 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.
BUS INPUTS
VIL
Input Low Voltage
1V
VIH
Input High Voltage
3
V
IIN
Input Current
-5
+5
mA
VO
Output Voltage SDA
Acknowledge
IO = 1.6mA
0.4
V
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
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| TDA7429T13TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX |
| TDA7430 | 功能描述:音频 DSP Digitally Controlled RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TDA7430_04 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX AND VOICE CANCELLER |
| TDA7430TR | 功能描述:多媒体杂项 DIGITALLY CONTROLLED AUDIO PROCESSOR RoHS:否 制造商:Texas Instruments 类型: 通道数量: 转换速率:540 Mbps 分辨率: 封装 / 箱体:SOIC-16 封装:Tube |
| TDA7431 | 功能描述:音频 DSP Digitally Controlled RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
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