Renesas R5S72623 사용자 설명서
Section 17 I
2
C Bus Interface 3
Page 864 of 2108
R01UH0134EJ0400 Rev. 4.00
Sep
24,
2014
SH7262 Group, SH7264 Group
Bit Bit
Name
Initial
Value
Value
R/W Description
2
AL/OVE
0
R/W
Arbitration Lost Flag/Overrun Error Flag
Indicates that arbitration was lost in master mode with
the I
the I
2
C bus format and that the final bit has been
received while RDRF = 1 with the clocked synchronous
format.
format.
When two or more master devices attempt to seize the
bus at nearly the same time, if the I
bus at nearly the same time, if the I
2
C bus interface 3
detects data differing from the data it sent, it sets AL to
1 to indicate that the bus has been occupied by another
master.
1 to indicate that the bus has been occupied by another
master.
[Clearing condition]
When 0 is written in AL/OVE after reading AL/OVE
When 0 is written in AL/OVE after reading AL/OVE
= 1
[Setting conditions]
If the internal SDA and SDA pin disagree at the rise
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
1 AAS 0 R/W
Slave
Address Recognition Flag
In slave receive mode, this flag is set to 1 if the first
frame following a start condition matches bits SVA[6:0]
in SAR.
frame following a start condition matches bits SVA[6:0]
in SAR.
[Clearing condition]
When 0 is written in AAS after reading AAS = 1
[Setting conditions]
When the slave address is detected in slave receive
When 0 is written in AAS after reading AAS = 1
[Setting conditions]
When the slave address is detected in slave receive
mode
When the general call address is detected in slave
receive mode.
0
ADZ
0
R/W
General Call Address Recognition Flag
This bit is valid in slave receive mode with the I
2
C bus
format.
[Clearing condition]
When 0 is written in ADZ after reading ADZ = 1
[Setting condition]
When the general call address is detected in slave
When 0 is written in ADZ after reading ADZ = 1
[Setting condition]
When the general call address is detected in slave
receive mode