NXP Semiconductors
FXTH87E
FXTH87E, Family of Tire Pressure Monitor Sensors
FXTH87ERM
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Reference manual
Rev. 5.0 — 4 February 2019
22 / 183
Address
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
$0033
RFCR3
DATA
IFPD
ISPC
IFID
FNUM[3:0]
$0034
RFCR4
RFBT[7:0]
$0035
RFCR5
BOOST
LFSR[6:0]
$0036
RFCR6
VCO_GAIN[1:0]
RFFT[5:0]
$0037
RFCR7
RFIF
RFEF
RFVF
RFIAK
RFIEN
RFLVDEN
RCTS
RFMRST
$0038
EPR
—/VCD3
PLL_LPF_[2:0]/VCD[2:0]
PA_
SLOPE
VCD_EN
$0039
Reserved
$003A
Reserved
$003B
Reserved
$003C
RFD0
RFD[135:128]
$003D
RFD1
RFD[143:136]
$003E
RFD2
RFD[151:144]
$003F
RFD3
RFD[159:152]
$0040
RFD4
RFD[167:160]
$0041
RFD5
RFD[175:168]
$0042
RFD6
RFD[183:176]
$0043
RFD7
RFD[191:184]
$0044
RFD8
RFD[199:192]
$0045
RFD9
RFD[207:200]
$0046
RFD10
RFD[215:208]
$0047
RFD11
RFD[223:216]
$0048
RFD12
RFD[231:224]
$0049
RFD13
RFD[239:232]
$004A
RFD14
RFD[247:240]
$004B
RFD15
RFD[255:248]
$004C
Reserved
$004D
Reserved
$004E
Reserved
$004F
Reserved
Note:
Shaded bits are recommended to only be controlled by firmware or factory test.
6.4 High address registers
High-page registers are used much less often, so they are located above $1800 in
the memory map. This leaves more room in the direct page for more frequently used
registers and variables. The registers control system level features as given in
Table 12
.
Table 12. MCU high address register summary
Address
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
$1800
SRS
POR
PIN
COP
ILOP
ILAD
PWU
LVD
0
$1801
SBDFR
0
0
0
0
0
0
0
BDFR
$1802
SIMOPT1
COPE
COPCLKS
STOPE
RFEN
TRE
TRH
BKGDPE
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