HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 534
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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Section 16 I
16.3.5
ICSR is an 8-bit readable/writable register that confirms interrupt request flags and their status.
ICSR is initialized to H'00 by a power-on reset.
Rev. 4.00 Sep. 14, 2005 Page 484 of 982
REJ09B0023-0400
Bit
7
6
5
I
2
Bit Name
TDRE
TEND
RDRF
2
C Bus Status Register (ICSR)
C Bus Interface 2 (IIC2)
Initial
Value
0
0
0
R/W
R/W
R/W
R/W
Description
Transmit Data Register Empty
[Setting conditions]
•
•
•
•
[Clearing conditions]
•
•
Transmit End
[Setting conditions]
•
•
[Clearing conditions]
•
•
Receive Data Register Full
[Setting condition]
•
[Clearing conditions]
•
•
When data is transferred from ICDRT to ICDRS and
ICDRT becomes empty
When TRS is set
When the start condition (including retransmission)
is issued
When slave mode is changed from receive mode to
transmit mode
When 0 is written in TDRE after reading TDRE = 1
When data is written to ICDRT
When the ninth clock of SCL rises with the I
format while the TDRE flag is 1
When the final bit of transmit frame is sent with the
clock synchronous serial format
When 0 is written in TEND after reading TEND = 1
When data is written to ICDRT with an instruction
When a receive data is transferred from ICDRS to
ICDRR
When 0 is written in RDRF after reading RDRF = 1
When ICDRR is read with an instruction
2
C bus
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