h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 620

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 I
Bit 3—Arbitration Lost (AL): This flag indicates that arbitration was lost in master mode. The
I
nearly the same time, if the I
to 1 to indicate that the bus has been taken by another master.
AL is cleared by reading AL after it has been set to 1, then writing 0 in AL. In addition, AL is
reset automatically by write access to ICDR in transmit mode, or read access to ICDR in receive
mode.
Bit 2—Slave Address Recognition Flag (AAS): In I
set to 1 if the first frame following a start condition matches bits SVA6 to SVA0 in SAR, or if the
general call address (H'00) is detected.
AAS is cleared by reading AAS after it has been set to 1, then writing 0 in AAS. In addition, AAS
is reset automatically by write access to ICDR in transmit mode, or read access to ICDR in receive
mode.
Rev. 6.00 Feb 22, 2005 page 560 of 1484
REJ09B0103-0600
Bit 3
AL
0
1
2
C bus interface monitors the bus. When two or more master devices attempt to seize the bus at
Description
Bus arbitration won
[Clearing conditions]
Arbitration lost
[Setting conditions]
2
C Bus Interface [Option] (Only for the H8S/2638, H8S/2639, and H8S/2630)
When ICDR data is written (transmit mode) or read (receive mode)
When 0 is written in AL after reading AL = 1
If the internal SDA and SDA pin disagree at the rise of SCL in master transmit
mode
If the internal SCL line is high at the fall of SCL in master transmit mode
2
C bus interface detects data differing from the data it sent, it sets AL
2
C bus format slave receive mode, this flag is
(Initial value)