參數(shù)資料
型號(hào)： TDA7540NTR
廠商： STMICROELECTRONICS
元件分類： 調(diào)諧器
英文描述： 2-BAND, AUDIO TUNER, PQFP80
封裝： 14 X 14 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-80
文件頁(yè)數(shù)： 31/76頁(yè)
文件大?。?/td> 1225K
代理商： TDA7540NTR
TDA7540N
Functional description
4.5
I2C-Bus interface
The TDA7540N supports the I2C-Bus protocol. This protocol defines any device that sends
data onto the bus as a transmitter, and the receiving device as the receiver. The device that
controls the transfer is a master and device being controlled is the slave. The master will
always initiate data transfer and provide the clock to transmit or receive operations.
Data transition
Data transition on the SDA line must only occur when the clock SCL is LOW. SDA transitions
while SCL is HIGH will be interpreted as START or STOP condition.
Start condition
A start condition is defined by a HIGH to LOW transition of the SDA line while SCL is at a
stable HIGH level. This "START" condition must precede any command and initiate a data
transfer onto the bus. The device continuously monitors the SDA and SCL lines for a valid
START and will not response to any command if this condition has not been met.
Stop condition
A STOP condition is defined by a LOW to HIGH transition of the SDA while the SCL line is at
a stable HIGH level. This condition terminates the communication between the devices and
forces the bus-interface of the device into the initial condition.
Acknowledge
Indicates a successful data transfer. The transmitter will release the bus after sending 8 bits
of data. During the 9th clock cycle the receiver will pull the SDA line to LOW level to indicate
it receive the eight bits of data.
Data transfer
During data transfer the device samples the SDA line on the leading edge of the SCL clock.
Therefore, for proper device operation the SDA line must be stable during the SCL LOW to
HIGH transition.
Device addressing
To start the communication between two devices, the bus master must initiate a start
instruction sequence, followed by an eight bit word corresponding to the address of the
device it is addressing.
The most significant 6 bits of the slave address are the device type identifier.
The TDA7540N device type is fixed as "110001".
The next significant bit is used to address a particular device of the previous defined type
connected to the bus.
The state of the hardwired PIN 59 defines the state of this address bit. So up to two devices
could be connected on the same bus. When PIN 59 is connected to VCC2 and a resistor at
PIN 55 versus ground of about 5.6k Ohm the address bit “1” is selected. In this case the AM
part doesn’t work. Otherwise the address bit “0” is selected (FM and AM is working).
Therefor a double FM tuner concept is possible.
相關(guān)PDF資料
PDF描述
TDA7540N 2-BAND, AUDIO TUNER, PQFP80
TDA7560 55 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25
TDA7560H AUDIO AMPLIFIER, PZFM25
TDA7561 38 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25
TDA7562 38 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA7541 功能描述:音頻放大器 AM/FM car radio Tuner IC Decoder 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
TDA7541B 功能描述:音頻放大器 AM/FM car radio Tuner IC Decoder 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
TDA7541BW 功能描述:音頻放大器 AM/FM car radio Tuner IC Decoder 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
TDA7541BWTR 功能描述:音頻放大器 AM/FM car radio Tuner IC Decoder 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
TDA7541TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system
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