r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 961

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

16.3.5
ICSR is an 8-bit readable/writable register that performs confirmation of interrupt request flags
and status.
Bit
7
6
5
Bit Name
TDRE
TEND
RDRF
I
2
C Bus Status Register (ICSR)
Initial Value
0
0
0
R/W
R/W
R/W
R/W
Description
Transmit Data Register Empty
[Setting condition]
•
•
•
•
•
•
•
Transmit End
[Setting condition]
•
[Clearing conditions]
•
•
Receive Data Register Full
[Setting condition]
•
[Clearing conditions]
•
•
When data is transferred from ICDRT to ICDRS
and ICDRT becomes empty.
When TRS has been set.
When a start condition (including retransmission)
has been issued.
When a transition from the receive mode to the
transmit mode has been made in the slave mode.
[Clearing conditions]
When 0 is written in TDRE after reading
TDRE = 1.
When data is written in ICDRT.
When the ninth clock of SCL is rose while the
TDRE flag is 1.
When 0 is written in TEND after reading
TEND = 1.
When data is written in ICDRT.
When a received data is transferred from ICDRS
to ICDRR.
When 0 is written in RDRF after reading
RDRF = 1.
When data is read from ICDRR.
Rev. 1.00 Sep. 19, 2008 Page 933 of 1270
Section 16 I
2
C Bus Interface 2 (IIC2)
REJ09B0466-0100