Master Transmission (Single Mode) - Renesas RZ/A Series User Manual

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
22.5.3

Master transmission (single mode)

Table 22-42 Standard initial processing
Register name
IEBBnSAR
IEBBnCDR or IEBBnTCD
IEBBnDLR
IEBBnDR
Table 22-43 Communication startup processing
Register name
IEBBnBCR
Start
IEBBTSTA
IEBBTV
IEBBTD
Figure 22-14 Interrupt occurrence timing
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
The unit transmits data and commands to the slave unit as the master.
Data interrupts are used to write transmission data to the IEBBnDR register for each
one-byte transfer.
(1) Register settings
After specifying the initial settings in 22.5.2 Initial settings, set up the registers
below before starting communication.
Communication partner unit address
Control data (AH, BH, EH, FH)
Message length
Data (1st byte of data)
Communication startup processing
(2) Interrupt occurrence timing
Broad
M address P Control
S address P A
cast
Function
Function
Message
Data 1
P A P A
length
Start interrupt
Start interrupt
Data interrupt
22. IEBus Controller
Data 2 ... Data n
P A P A
Transmission
end interrupt
Transmission
end interrupt
Note
No data interrupt occurs
because this is frame end data.
Example
102H
FH
02H
11H
Example
C8H
P A
22-82