R01UH0823EJ0100 Rev.1.00
Page 1076 of 1823
Jul 31, 2019
RX23W Group
33. Serial Communications Interface (SCIg, SCIh)
33.10 Extended Serial Mode Control Section: Description of Operation
33.10.1
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 33.60
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