HD6432621 Hitachi, HD6432621 Datasheet - Page 608

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

564
Initialization (after hardware reset only)
Message transmission method setting
GSR2 = 0 (during transmission only)
Message transmission wait
Transmission completed?
Arbitration field setting
Message transmission
Transmit data setting
Mailbox initialization
Control field setting
End of transmission
Interrupt settings
Data field setting
Interrupt to CPU
MBCR setting
IRR0 clearing
TXPR setting
Clear TXACK
BCR setting
TXACK = 1
Clear IRR8
IMR8 = 1?
Bus idle?
IRR8 = 1
Yes
No
Yes
Figure 15-7 Transmission Flowchart
No
No
Yes
: Settings by user
: Processing by hardware