NXP Semiconductors UM11227 - Page 113

NXP Semiconductors
UM11227
NTM88 family of tire pressure monitor sensors
UM11227 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved.
User manual Rev. 6 — 24 April 2020
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aaa-028036
low
bit
high
bit
FSK = f
RF
+ f
FSK = f
RF
- f
OOK = f
RF
OOK = OFF
bit time
Consecutive “0
data bits
Consecutive “1
data bits
“001101
data bits
bit time
Figure 35. Manchester data bit encoding (POL = 1)
aaa-028037
low
bit
low
bit
FSK = f
RF
+ f
FSK = f
RF
- f
OOK = f
RF
OOK = OFF
bit time
Consecutive “0
data bits
Consecutive “1
data bits
“001101
data bits
bit time
high
bit
bit time
high
bit
bit time
Figure 36. Bi-Phase data bit encoding (POL = 0)