Renesas H8S/2111B Network Card User Manual


 
Rev. 1.00, 05/04, page 298 of 544
Bit Bit Name
Initial
Value R/W Description
4 AASX 0 R/(W)* Second Slave Address Recognition Flag
In I
2
C bus format slave receive mode, this flag is set to
1 if the first frame following a start condition matches
bits SVAX6 to SVAX0 in SARX.
[Setting condition]
When the second slave address is detected in slave
receive mode and FSX = 0 in SARX
[Clearing conditions]
When 0 is written in AASX after reading AASX = 1
When a start condition is detected
In master mode
3 AL 0 R/(W)* Arbitration Lost Flag
Indicates that arbitration was lost in master mode.
[Setting conditions]
When ALSL = 0
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
When ALSL = 1
If the internal SDA and SDA pin disagree at the
rise of SCL in master transmit mode
If the SDA pin is driven low by another device
before the I
2
C bus interface drives the SDA pin
low, after the start condition instruction was
executed in master transmit mode
[Clearing conditions]
When ICDR is written to (transmit mode) or read
from (receive mode)
When 0 is written in AL after reading AL = 1