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

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
22.5.4

Master transmission (FIFO mode)

Table 22-44 Standard initial processing
Register name
IEBBnSAR
IEBBnCDR or IEBBnTCD
IEBBnTDL
IEBBnDR
Table 22-45 Communication startup processing
Register name
IEBBnBCR
Start
IEBBTSTA
Note No start interrupt occurs.
IEBBTV
IEBBTD
Figure 22-18 Interrupt occurrence timing
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
The unit transmits data and commands to the slave unit as the master.
Transmission data is written into the buffer in advance, and then a master request is
issued.
(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 (all data to be transmitted)
Communication startup processing
(2) Interrupt occurrence timing
Broad
M address P Control
S address P A
cast
Note
No data interrupt occurs.
Function
Function
Message
P A P A Data 1 P A
length
Note A data interrupt occurs at the timing specified by
the IEBBnTMS.IEBBnSLTI1 and IEBBnSLTI0 bits.
22. IEBus Controller
Example
102H
FH
02H
11H, ...
Example
C8H
... Data m P A ... Data n
Transmission
end interrupt
Transmission
end interrupt
P A
22-84