HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 422

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 13 Serial Communication Interface (SCI)
Figure 13.13 shows an example of SCI receive operation using a multiprocessor format.
Rev. 7.00 Jan 31, 2006 page 396 of 658
REJ09B0272-0700
Figure 13.13 Example of SCI Receive Operation (Own ID Does Not Match Data) (8-Bit
RDRF
Serial
MPIE
value
interrupt) MPIE = 0
MPB
RDR
data
(multiprocessor
RXI request,
1
Start
bit
0
D
Data with Multiprocessor Bit and One Stop Bit)
0
D
Data ID1
1
handler reads data
in RDR and clears
D
RXI interrupt
RDRF to 0
7
MPB
1
Stop
bit
1
Start
bit
0
D
0
set to 1 again
Not own ID,
D
so MPIE is
1
Data 1
D
7
ID1
MPB
0
RDR maintains
Stop
bit
1
interrupt,
No RXI
state
Idle (mark)
state
1