HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 535

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit
4
3
2
Bit Name
NACKF
STOP
AL/OVE
Initial
Value
0
0
0
R/W
R/W
R/W
R/W
Description
No Acknowledge Detection Flag
[Setting condition]
•
[Clearing condition]
•
Stop Condition Detection Flag
[Setting condition]
•
[Clearing condition]
•
Arbitration Lost Flag/Overrun Error Flag
This flag indicates that arbitration was lost in master
mode with the I
been received while RDRF = 1 with the clocked
synchronous format.
When two or more master devices attempt to seize the
bus at nearly the same time, if the I
detects data differing from the data it sent, it sets AL to
1 to indicate that the bus has been taken by another
master.
[Setting conditions]
•
•
•
[Clearing condition]
•
When no acknowledge is detected from the receive
device in transmission while the ACKE bit in ICIER
is 1
When 0 is written in NACKF after reading NACKF
= 1
When a stop condition is detected after frame
transfer
When 0 is written in STOP after reading STOP = 1
If the internal SDA and SDA pin disagree at the rise
of SCL in master transmit mode
When the SDA pin outputs high in master mode
while a start condition is detected
When the final bit is received with the clocked
synchronous format while RDRF = 1
When 0 is written in AL/OVE after reading AL/OVE
= 1
2
C bus format and that the final bit has
Rev. 4.00 Sep. 14, 2005 Page 485 of 982
Section 16 I
2
C Bus Interface 2 (IIC2)
2
C bus interface
REJ09B0023-0400