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參數資料
| 型號： | TDA7427 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 200 MHz, PDIP20 |
| 封裝： | DIP-20 |
| 文件頁數： | 4/21頁 |
| 文件大?。?/td> | 350K |
| 代理商： | TDA7427 |
dress being transmitted.
After this comparison, the TDA7427 will generate
an "acknowledge" on the SDA line and will per-
form either a read or write operation according to
the state of R/W bit.
Write Operation
Following a START condition the master sends a
slave address word with the R/W bit set to "0".
The TDA7427 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 TDA7427 slave device will re-
spond with an "acknowledge". At this time, all the
following words transmitted to the TDA7427 will
be considered as Data. The internal address will
be automatically incremented. After each word re-
ceipt the TDA7427 will answer with an "acknow-
ledge".
SOFTWARE SPECIFICATION
I
2C Protocol
The interface protocol comprises:
A start condition (s)
A chip address byte (the LSB determines
read/write transmission)
A sub-address byte.
A sequence of data (N-bytes + acknowledge)
A stop condition (P)
CHIP ADDRESS
MSB
LSB
110
00
10
0
SUBADDRESS
MSB
LSB
FUNCTION
T3
T2
T1
I
A3
A2
A1
A0
0000
Charge pump control
0001
PLL counter 1 (LSB)
0010
PLL counter 2 (MSB)
0011
PLL reference counter 1 (LSB)
0100
PLL reference counter 2 (MSB)
0101
PLL lockdetector control and PLL mode select
0110
IFC reference counter 1 (LSB)
0111
IFC reference counter 2 (MSB) and IFC mode select
1000
IF counter control 1
1001
IF counter control 2
1010
Oscillator adjust
1011
Port extension
0
page mode off
1
page mode enabled
T1, T2, T3 used for testing, in application mode they have to be "0"
CHIP ADDRESS
SUBADDRESS
DATA 1 to DATA n
MSB
LSB
MSB
LSB
MSB
LSB
S
1100010
R/W ACK T
T
I
A3 A2 A1 A0 ACK
DATA
ACK
P
ACK = Acknowledge
S = Start
P = Stop
I = Auto Increment
T = used for testing (in application mode they have to be " 0")
MAX CLOCK SPEED 400kbits/s
TDA7427
12/21
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TDA7427AD1TR | 功能描述:鎖相環(huán) - PLL AM/FM Radio Freq Syn RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
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