RL78/G1H CHAPTER 18 RF TRANSCEIVER
R01UH0575EJ0120 Rev. 1.20 Page 650 of 920
Dec 22, 2016
(89) Lower limit threshold setting register after SFD detection (PWRLOWTH2)
This register is used to set threshold for detection of no communication state after SFD detection. This
register is valid when receive level filter enable bit is 1.
An interrupt request is issued as receive level filter interrupt to return to receive wait state detecting no
communication state when the connection is cut during communication or frame length is error detected.
When the operation is under noisy environment usually, no communication state is detected correctly
adjusting this register. The default is 1 (no communication state is detected when the communication does
not formed completely). Set this register to 2 under match noisy environment.
Figure 18 - 102 Lower limit threshold setting register after SFD detection (PWRLOWTH2) Format
Setting example (at 100 kbps)
Usual use: 01H
Under match noisy environment: 02H
Caution Receive characteristic might be degraded when the setting value is over 02H.
Address: 050FH After reset: 00H W
Symbol76543210
PWRLOWT
H2
PWRLOWTH2
Lower limit threshold value after SFD detection
(threshold level of receive level filter)
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