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參數(shù)資料
| 型號： | PPXY8300A6T1 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | Pressure Sensor |
| 英文描述： | DIFFERENTIAL, PEIZORESISTIVE PRESSURE SENSOR, RECTANGULAR, SURFACE MOUNT |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 14/162頁 |
| 文件大?。?/td> | 4316K |
| 代理商： | PPXY8300A6T1 |
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MPXY8300 Series
Sensors
110
Freescale Semiconductor
13.4.2
Bi-Phase Encoding
In the Bi-Phase encoded format, data is transmitted as the presence or absence of a transition in signal in the middle of the bit
time. The polarity of this transition is selected by the POL bit. Unlike Manchester coding there is always a signal transition at the
boundaries of each bit time. When the POL bit is cleared, then a logical HIGH is defined as no change in signal in the middle of
a bit time and a logical LOW is defined as a change in the signal in the middle of a bit time as shown in Figure 13-6. When the
POL bit is set, then a logical HIGH is defined as a change in signal in the middle of a bit time and a logical LOW is defined as no
change in the signal in the middle of a bit time as shown in Figure 13-7. Since there is always a transition at the ends of the bit
time consecutive bits of the same state may have two signal states (high or low) during the middle of the bit time.
13.5
RF Output Stage
The RF output stage consists of a PLL, control logic and an output RF amplifier. Data is sent to the RF output stage from either
the RF data buffer or the DX control signal depending on the selected mode of operation as described in Section 13.2.
The RF output stage is enabled by the RTS signal which is dependent on the state of the SEND control bit. The PLL in the RF
output stage will signal back via the RCTS status bit when the PLL is locked and ready to transmit. A block diagram of the RF
output stage is shown in Figure 13-8. The method of modulation, carrier frequency and power output of the RF output stage can
be selected as described in the following sections.
Figure 13-4 Manchester Data Bit Encoding (POL = 0)
LOW
BIT
HIGH
BIT
FSK = fRF+ Δf
FSK = fRF - Δf
Bit Time
Consecutive “0”
Data Bits
Consecutive “1”
Data Bits
“001101”
Data Bits
ASK = fRF
ASK = OFF
Bit Time
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| PPYY12C0.75 50M | 制造商:Farnell / Pro-Power 功能描述:CABLE YY 12 CORE 0.75MM 50M 制造商:pro-power 功能描述:CABLE, YY, 12 CORE, 0.75MM, 50M |
| PPYY12C1.50 | 制造商:Farnell / Pro-Power 功能描述:CABLE YY 12 CORE 1.5MM PER M 制造商:pro-power 功能描述:CABLE, YY, 12 CORE, 1.5MM, PER M |
| PPYY12C1.50 50M | 制造商:Farnell / Pro-Power 功能描述:CABLE YY 12 CORE 1.5MM 50M 制造商:pro-power 功能描述:CABLE, YY, 12 CORE, 1.5MM, 50M |
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