I 2 C-Bus Function Enable Register (Icfer) - Renesas RX100 Series User Manual

RX13T Group
2
24.2.6 I C-bus Function Enable Register (ICFER)
Address(es): RIIC0.ICFER 0008 8305h
b7 b6
— SCLE
0 1
Value after reset:
Bit Symbol Bit Name
b0 TMOE Timeout Function Enable
b1 MALE Master Arbitration-Lost
Detection Enable
b2 NALE NACK Transmission
Arbitration-Lost Detection
Enable
b3 SALE Slave Arbitration-Lost
Detection Enable
b4 NACKE NACK Reception Transfer
Abort Enable
b5 NFE Digital Noise Filter Circuit
Enable
b6 SCLE SCL Synchronous Circuit
Enable
b7 — Reserved
TMOE Bit (Timeout Function Enable)
This bit is used to enable or disable the timeout function.
For details on the timeout function, refer to section 24.11.1, Timeout Function .
MALE Bit (Master Arbitration-Lost Detection Enable)
This bit is used to specify whether to use the arbitration-lost detection function in master mode. Normally, set this bit to
1.
NALE Bit (NACK Transmission Arbitration-Lost Detection Enable)
This bit is used to specify whether to cause arbitration to be lost when ACK is detected during transmission of NACK in
receive mode (such as when slaves with the same address exist on the bus or when two or more masters select the same
slave device simultaneously with different number of receive bytes).
SALE Bit (Slave Arbitration-Lost Detection Enable)
This bit is used to specify whether to cause arbitration to be lost when a value different from the value being transmitted
is detected on the bus in slave transmit mode (such as when slaves with the same address exist on the bus or when a
mismatch with the transmit data occurs due to noise).
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
b5 b4 b3 b2
NFE NACKE SALE NALE
1 1 0 0
Description
0: The timeout function is disabled.
1: The timeout function is enabled.
0: Master arbitration-lost detection is disabled.
(Disables the arbitration-lost detection function and does not clear the
ICCR2.MST and TRS bits automatically when arbitration is lost.)
1: Master arbitration-lost detection is enabled.
(Enables the arbitration-lost detection function and clears the
ICCR2.MST and TRS bits automatically when arbitration is lost.)
0: NACK transmission arbitration-lost detection is disabled.
1: NACK transmission arbitration-lost detection is enabled.
0: Slave arbitration-lost detection is disabled.
1: Slave arbitration-lost detection is enabled.
0: Transfer operation is not aborted during NACK reception (transfer
abort disabled).
1: Transfer operation is aborted during NACK reception (transfer abort
enabled).
0: No digital noise filter circuit is used.
1: A digital noise filter circuit is used.
0: No SCL synchronous circuit is used.
1: An SCL synchronous circuit is used.
This bit is read as 0. The write value should be 0.
b1 b0
MALE TMOE
1 0
2
24. I C-bus Interface (RIICa)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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