Fujitsu F2MCTM-16LX Hardware Manual page 452

CHAPTER 20 LIN-UART
Function selection
Select the operation mode and data transfer mode for master-slave communication as shown in Table 20.7-
3 .
Table 20.7-3 Selection of the Master-slave Communication Function
Operation mode
Master
CPU
Address Mode 1
transmission (transmit/
and receive AD-
reception bit)
Data
transmission
and
reception
Communication procedure
When the master CPU transmits address data, communication starts. The AD bit in the address data is
set to 1, and the communication destination slave CPU is selected. Each slave CPU checks the address
data using a program. When the address data indicates the address assigned to a slave CPU, the slave
CPU communicates with the master CPU.
Figure 20.7-15 shows a flowchart of master-slave communication (multiprocessor mode)
436
Data
Slave
CPU
Mode 1 AD="1"
(transmit/ +
receive AD- 7- or 8-bit address
bit)
AD="0"
+
7- or 8-bit data
Parity Synchron
ization
method
None Asynchro- 1 bit or 2 bits
nous
Stop bit Bit direction
LSB or MSB
first