h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 544
h8s-2169
Manufacturer Part Number
h8s-2169
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2169.pdf
(1075 pages)
- Current page: 544 of 1075
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Section 16 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 3
AL
0
1
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. 3.00 Jan 18, 2006 page 516 of 1044
REJ09B0280-0300
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]
1. When ICDR data is written (transmit mode) or read (receive mode)
2. When 0 is written in AL after reading AL = 1
Arbitration lost
[Setting conditions]
1. If the internal SDA and SDA pin disagree at the rise of SCL in master transmit
2. If the internal SCL line is high at the fall of SCL in master transmit mode
2
C Bus Interface
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)
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