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參數(shù)資料
| 型號(hào)： | TDA7421N |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS |
| 中文描述： | AM / FM調(diào)諧的汽車收音機(jī)及音響應(yīng)用 |
| 文件頁(yè)數(shù)： | 21/38頁(yè) |
| 文件大小： | 337K |
| 代理商： | TDA7421N |
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TDA7421N
Figure 5. Phase Comparator
5.5 Acknowledge
Indicates a successful data transfer. The transmitter will release the bus after sending 8 bit of data. During the 9th
clock cycle the receiver will pull the SDA line to LOW level to indicate it has received the eight bits of data correctly.
5.6 Data transfer
During data transfer the TDA7421N 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.
5.7 Device Addressing
To start the communication between two devices, the bus master must initiate a start instruction sequence, fol-
lowed by an eight bit word corresponding to the address of the device it is addressing. The most significant 6
bits of the slave address identify the device type.
The TDA7421N device code is fixed as "110001".
The next significant bit is used either to address the tuner section (1) or the PLL section (0) of the chip.
Following a START condition the master sends slave address word; the TDA7421N will "acknowledge" after this
first transmission and wait for a second word (the word address field).This 8 bit address field provides an access
to any of the 8 internal addresses. Upon receipt of the word address the TDA7421N slave device will respond
with an "acknowledge".
At this time, all the following words transmits to the TDA7421N will be considered as data.The internal address
will be automatically incremented. After each word receipt the TDA7421N will answer with an "acknowledge".
The interface protocol comprises:
– a subaddress byte
– a sequence of data (N-bytes + acknowledge)
– a stop condition (P)
– a start condition (S)
– a chip address byte
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| TDA7427 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AD1 | 功能描述:音頻 DSP AM/FM Radio Freq Syn 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(fēng)格: 封裝 / 箱體: 封裝:Tube |
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