Renesas R5S72621 User Manual
Section 17 I
2
C Bus Interface 3
Page 860 of 2108
R01UH0134EJ0400 Rev. 4.00
Sep
24,
2014
SH7262 Group, SH7264 Group
17.3.4
I
2
C Bus Interrupt Enable Register (ICIER)
ICIER is an 8-bit readable/writable register that enables or disables interrupt sources and
acknowledge bits, sets acknowledge bits to be transferred, and confirms acknowledge bits
received.
acknowledge bits, sets acknowledge bits to be transferred, and confirms acknowledge bits
received.
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
Bit:
Initial value:
R/W:
TIE
TEIE
RIE
NAKIE
STIE
ACKE ACKBR ACKBT
Bit Bit
Name
Initial
Value R/W
Value R/W
Description
7
TIE
0
R/W
Transmit Interrupt Enable
When the TDRE bit in ICSR is set to 1 or 0, this bit
enables or disables the transmit data empty interrupt
(TXI).
enables or disables the transmit data empty interrupt
(TXI).
0: Transmit data empty interrupt request (TXI) is
disabled.
1: Transmit data empty interrupt request (TXI) is
enabled.
6
TEIE
0
R/W
Transmit End Interrupt Enable
Enables or disables the transmit end interrupt (TEI) at
the rising of the ninth clock while the TDRE bit in ICSR
is 1. TEI can be canceled by clearing the TEND bit or
the TEIE bit to 0.
the rising of the ninth clock while the TDRE bit in ICSR
is 1. TEI can be canceled by clearing the TEND bit or
the TEIE bit to 0.
0: Transmit end interrupt request (TEI) is disabled.
1: Transmit end interrupt request (TEI) is enabled.
5
RIE
0
R/W
Receive Interrupt Enable
Enables or disables the receive data full interrupt (RXI)
when receive data is transferred from ICDRS to ICDRR
while RDRF in ICSR is set to 1. RXI can be canceled by
clearing the RDRF or RIE bit to 0.
when receive data is transferred from ICDRS to ICDRR
while RDRF in ICSR is set to 1. RXI can be canceled by
clearing the RDRF or RIE bit to 0.
0: Receive data full interrupt request (RXI) are disabled.
1: Receive data full interrupt request (RXI) are enabled.