r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 472

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
Figure 20.26
20.3.4.1
Figure 20.26 shows a Flowchart of Multiprocessor Data Transmission. Set the MPBT bit in the U2TB register
to 1 for ID transmission cycles. Set the MPBT bit in the U2TB register to 0 for data transmission cycles. Other
operations are the same as in clock asynchronous serial I/O mode (UART mode).
(1)
(2)
(3)
Set the MPBT bit in the U2TB register
Check the TI bit in the U2C1 register
Preliminary document
Specifications in this document are tentative and subject to change.
Multiprocessor Transmission
Flowchart of Multiprocessor Data Transmission
in the U2C1 register to 0
Write transmit data to
Check the TXEPT bit
in the U2C0 register
data transmission?
the U2TB register
Set the TE bit
TXEPT = 1?
Continue
TI = 1?
Start
End
YES
YES
NO
YES
NO
(1) Check that the TI bit in the U2C1 register
(2) When transmission completes, the TXEPT
(3) To stop transmission, set the TE bit in the
is set to 1. Then set the MPBT bit in the
U2TB register to 0 or 1 and write transmit
data to the U2TB register. Writing data to
the U2TB register sets the TI bit to 0
automatically.
bit in the U2CO register is set to 1
automatically.
U2C0 register to 0. To continue
transmission, return to process in step (1).
20. Serial Interface (UART2)
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