HD64F2168 Datasheet, PDF (626/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Slave CPU
Master CPU
ODR1 write
Write 1 to IRQ1E1
OBF1 = 0?
No
Yes
All bytes
No
transferred?
Yes
SERIRQ IRQ1 output
SERIRQ IRQ1
source clearance
Interrupt initiation
ODR1 read
Hardware operation
Software operation
Figure 16.12 HIRQ Flowchart (Example of Channel 1)
Rev. 3.00, 03/04, page 586 of 830