R01UH0822EJ0100 Rev.1.00
Page 714 of 1041
Jul 31, 2019
RX13T Group
23. Serial Communications Interface (SCIg, SCIh)
23.12.5
Interrupt Requests from the Extended Serial Mode Control Section
The extended serial mode control section has a total of six types of interrupt request for generating the SCIX0 interrupt
(Break Field low width detected), SCIX1 interrupt (Control Field 0 match, Control Field 1 match, priority interrupt bit
detected), SCIX2 interrupt (bus collision detected), and SCIX3 interrupt (valid edge detected). When any of the interrupt
factors is generated, the corresponding status flag is set to 1. Details of all of the interrupt requests are listed in
.
Table 23.34
Interrupt Sources of the Extended Serial Mode Control Section
Interrupt Request
Status Flag Interrupt Factors
SCIX0 interrupt (Break Field low width
detected)
BFDF
Detection of a Break Field low width longer than the interval corresponding
to the timer setting
Completion of the output of a Break Field low width over the interval
corresponding to the timer setting
Underflow of the timer
SCIX1 interrupt (Control Field 0 match)
CF0MF
The data received in Control Field 0 matching the value set in CF0DR
SCIX1 interrupt (Control Field 1 match)
CF1MF
The data received in Control Field 1 matching the value set in PCF1DR or
SCF1DR
SCIX1 interrupt (priority interrupt bit
detected)
PIBDF
The value of the bit specified as the priority interrupt bit matching the value set
in PCF1DR
SCIX2 interrupt (bus collision detected) BCDF
The output level on the TXDX12 pin and the input level on the RXDX12 pin not
matching on three consecutive cycles of the bus collision detection clock
SCIX3 interrupt (valid edge detected)
AEDF
Detection of a valid edge during bit rate measurement