
Section 16 I
2
C Bus Interface 2 (IIC2)
Rev. 4.00 Sep. 14, 2005 Page 485 of 982
REJ09B0023-0400
Bit Bit
Name
Initial
Value R/W
Description
4
NACKF
0
R/W
No Acknowledge Detection Flag
[Setting condition]
•
When no acknowledge is detected from the receive
device in transmission while the ACKE bit in ICIER
is 1
[Clearing condition]
•
When 0 is written in NACKF after reading NACKF
= 1
3
STOP
0
R/W
Stop Condition Detection Flag
[Setting condition]
•
When a stop condition is detected after frame
transfer
[Clearing condition]
•
When 0 is written in STOP after reading STOP = 1
2
AL/OVE
0
R/W
Arbitration Lost Flag/Overrun Error Flag
This flag indicates that arbitration was lost in master
mode with the I
2
C bus format and that the final bit has
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
2
C bus interface
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]
•
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
[Clearing condition]
•
When 0 is written in AL/OVE after reading AL/OVE
= 1
Summary of Contents for HD6417641
Page 2: ...Rev 4 00 Sep 14 2005 Page ii of l...
Page 7: ...Rev 4 00 Sep 14 2005 Page vii of l...
Page 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
Page 12: ...Rev 4 00 Sep 14 2005 Page xii of l...
Page 28: ...Rev 4 00 Sep 14 2005 Page xxviii of l...
Page 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Page 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Page 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Page 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Page 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Page 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Page 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Page 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Page 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Page 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Page 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Page 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Page 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Page 1032: ...Rev 4 00 Sep 14 2005 Page 982 of 982 REJ09B0023 0400 X X Y data addressing 52 X Y memory 193...
Page 1035: ......
Page 1036: ...SH7641 Hardware Manual...