參數(shù)資料
型號(hào): 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(yè)數(shù): 18/162頁(yè)
文件大?。?/td> 4316K
代理商: PPXY8300A6T1
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MPXY8300 Series
Sensors
114
Freescale Semiconductor
13.6.2
RFX Control Register 1 - RFCR1
The RFCR1 register contains eight control bits for the RFX as described in Figure 13-10. This register is accessed by writing to
the RFX register address $01 using the SPI.
13.6.3
RFX Control Register 2 - RFCR2
The RFCR2 register contains six control bits for the RFX as described in Figure 13-11. This register is accessed by writing to the
RFX register address $02 using the SPI.
Table 13-4 Data Rate Options
Data Rate
BPS Value
Target
Nominal
fRF = 315 MHz and CF = 0
fRF = 434 MHz and CF = 1
Decimal
Hexidecimal
2000 bps
2003
124
$7C
2400 bps
2408
103
$67
4000 bps
3975
62
$3E
4500 bps
4472
55
$37
4800 bps
4816
51
$33
5000 bps
5008
49
$31
9600 bps
9632
25
$19
19200 bps
19264
12
$0C
$01
Bit 7
6
5
4
3
2
1
Bit 0
R
EOM
FRM
W
RESET:
0
Figure 13-10 RFX Control Register 1 (RFCR1)
Table 13-5 RFX Control Register 1 Field Descriptions
Field
Description
7
EOM
End of Message — The EOM control bit selects whether there will be two data bit times of no carrier at the end
of each datagram. The EOM control bit is cleared by a RFX reset.
0
EOM bit times not added
1
EOM bit times added
6-0
FRM[6:0]
Frame Bit Length — The FRM control bits select the number of bits in each datagram. The number of bits is
determined by the binary value of the FRM bits plus one. This makes the range of bits from 1 to 128. The FRM
control bits are cleared by a RFX reset.
$02
Bit 7
6
5
4
3
2
1
Bit 0
R
RFM
POL
CODE
CPT1
CPT0
AVDD
VCAP
CPUMP
W
RESET:
0
Figure 13-11 RFX Control Register 2 (RFCR2)
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