Interrupt Requests From The Extended Serial Mode Control Section - Renesas RX100 Series User Manual

RX13T Group
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 .
Table 23.34 Interrupt Sources of the Extended Serial Mode Control Section
Interrupt Request
SCIX0 interrupt (Break Field low width
detected)
SCIX1 interrupt (Control Field 0 match)
SCIX1 interrupt (Control Field 1 match)
SCIX1 interrupt (priority interrupt bit
detected)
SCIX2 interrupt (bus collision detected)
SCIX3 interrupt (valid edge detected)
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Status Flag Interrupt Factors
 Detection of a Break Field low width longer than the interval corresponding
BFDF
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
CF0MF The data received in Control Field 0 matching the value set in CF0DR
CF1MF The data received in Control Field 1 matching the value set in PCF1DR or
SCF1DR
PIBDF The value of the bit specified as the priority interrupt bit matching the value set
in PCF1DR
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
AEDF Detection of a valid edge during bit rate measurement
23. Serial Communications Interface (SCIg, SCIh)
Page 714 of 1041