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Section 21 IEBus
TM
Controller
R01UH0134EJ0400 Rev. 4.00 Page 1139 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
21.5.2 Master Transmission
Figure 21.9 shows the flowchart for master transmission.
START
END
[IEMCR register setting]
Broadcast/normal selection
Retransfer counts
Control bits
Initial setting
[IESA1, IESA2 register setting]
Slave address
[IETBFL register setting]
Message length bits
[IETB001 to IETB128 setting]
Transmit data
[IECMR register setting]
Master communications
request command
Transmit start interrupt
Transmit error interrupt
(TXE***)
Transmit start interrupt (TXS)
Interrupt processing
IETSR[TXS] clear
Transmit completion
interrupt
Transmit error interrupt
(TXE***)
Transmit completion interrupt (TXF)
Interrupt processing
IETSR[TXF] clear
Interrupt processing
IETSR[TXE***] clear
Figure 21.9 Flowchart for Master Transmission