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| 型号： | TVP5150AM1MPBSREP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 颜色信号转换 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP32 |
| 封装： | PLASTIC, TQFP-32 |
| 文件页数： | 15/79页 |
| 文件大小： | 896K |
| 代理商： | TVP5150AM1MPBSREP |
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3.15 I
2C Host Interface
TVP5150AM1-EP
Ultralow-Power NTSC/PAL/SECAM Video Decoder
SLES213 – MAY 2008
www.ti.com
The I2C standard consists of two signals, serial input/output data line (SDA) and input/output clock line
(SCL), which carry information between the devices connected to the bus. A third signal (I2CSEL) is used
for slave address selection. Although the I2C system can be multimastered, the TVP5150AM1 decoder
functions only as a slave device.
Both SDA and SCL must be connected to a positive supply voltage via a pullup resistor. When the bus is
free, both lines are high. The slave address select terminal (I2CSEL) enables the use of two
TVP5150AM1 decoders tied to the same I2C bus. At power up, the status of the I2CSEL is polled.
Depending on the write and read addresses to be used for the TVP5150AM1 decoder, I2CSEL can either
be pulled low or high through a resistor. This terminal is multiplexed with YOUT7 and hence must not be
tied directly to ground or IO_DVDD. Table 3-6 summarizes the terminal functions of the I2C-mode host
interface.
Table 3-5. Write-Address
Selection
I2CSEL
WRITE ADDRESS
0
B8h
1
BAh
Table 3-6. I2C Terminal Description
SIGNAL
TYPE
DESCRIPTION
I2CSEL (YOUT7)
I
Slave-address selection
SCL
I/O (open drain)
Input/output clock line
SDA
I/O (open drain)
Input/output data line
Data transfer rate on the bus is up to 400 kbit/s. The number of interfaces connected to the bus is
dependent on the bus capacitance limit of 400 pF. The data on the SDA line must be stable during the
high period of the SCL except for start and stop conditions. The high or low state of the data line can
change ony with the clock signal on the SCL line being low. A high-to-low transition on the SDA line while
the SCL is high indicates an I2C start condition. A low-to-high transition on the SDA line while the SCL is
high indicates an I2C stop condition.
Every byte placed on the SDA must be eight bits long. The number of bytes that can be transferred is
unrestricted. Each byte must be followed by an acknowledge bit. The acknowledge-related clock pulse is
generated by the I2C master.
Functional Description
22
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| TVP5150AM1PBS | 功能描述:视频 IC NTSC/PAL/SECAM VIDEO DECODER RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5150AM1PBSG4 | 功能描述:视频 IC NTSC/PAL/SECAM VIDEO DECODER RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5150AM1PBSR | 功能描述:视频 IC Ultralo Pwr NTSC/PAL SECAM Vid Decoder RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5150AM1PBSRG4 | 功能描述:视频 IC Ultralo Pwr NTSC/PAL SECAM Video Decoder RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TVP5150AM1ZQC | 功能描述:视频 IC Ultralo Pwr NTSC/PAL SECAM Vid Decoder RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
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