R01UH0822EJ0100 Rev.1.00
Page 694 of 1041
Jul 31, 2019
RX13T Group
23. Serial Communications Interface (SCIg, SCIh)
23.10 Extended Serial Mode Control Section: Description of Operation
23.10.1
Serial Transfer Protocol
The extended serial mode control section of the SCI12 can realize the serial transfer protocol composed of Start Frames
and Information Frames that is shown in
A Start Frame is composed of a Break Field, Control Field 0, and Control Field 1. An Information Frame is composed of
a number of Data Fields, a CRC16 Upper Field, and a CRC16 Lower Field.
Figure 23.59
Protocol for Serial Transfer by the Extended Serial Mode Control Section
Start Frame
Information Frame
Break Field
Break Field low width
Break Field
high width
Inter Field Space
Inter Field Space
Control Field 0
Control Field 1
Data Field
Data Field
Data Field
Data Field
CRC16 Upper Field
CRC16 Lower Field
Information Frame
Inter Field Space
Inter Field Space
Inter Field Space
Inter Field Space
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits
8 bits