
Rev. 2.0, 11/00, page 542 of 1037
Bit 2: Slave Address Recognition Flag (AAS)
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 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.
Bit 2
AAS
Description
0
Slave address or general call address not recognized
(Initial value)
[Clearing conditions]
(1) When ICDR data is written (transmit mode) or read (receive mode)
(2) When 0 is written in AAS after reading AAS = 1
(3) In master mode
1
Slave address or general call address recognized
[Setting condition]
•
When the slave address or general call address is detected in slave receive mode
Bit 1: General Call Address Recognition Flag (ADZ)
In I
2
C bus format slave receive mode, this flag is set to 1 if the first frame following a start
condition is the general call address (H'00).
ADZ is cleared by reading ADZ after it has been set to 1, then writing 0 in ADZ. In addition,
ADZ is reset automatically by write access to ICDR in transmit mode, or read access to ICDR in
receive mode.
Bit 1
ADZ
Description
0
General call address not recognized
(Initial value)
[Clearing conditions]
(1) When ICDR data is written (transmit mode) or read (receive mode)
(2) When 0 is written in ADZ after reading ADZ = 1
(3) In master mode
1
General call address recognized
[Setting condition]
•
If the general call address is detected when FSX = 0 or FS = 0 is selected in the
slave receive mode.
Summary of Contents for Hitachi H8S/2191
Page 123: ...Rev 2 0 11 00 page 96 of 1037...
Page 149: ...Rev 2 0 11 00 page 122 of 1037...
Page 197: ...Rev 2 0 11 00 page 170 of 1037...
Page 247: ...Rev 2 0 11 00 page 220 of 1037...
Page 249: ...Rev 2 0 11 00 page 222 of 1037...
Page 347: ...Rev 2 0 11 00 page 320 of 1037...
Page 357: ...Rev 2 0 11 00 page 330 of 1037...
Page 417: ...Rev 2 0 11 00 page 390 of 1037...
Page 431: ...Rev 2 0 11 00 page 404 of 1037...
Page 439: ...Rev 2 0 11 00 page 412 of 1037...
Page 457: ...Rev 2 0 11 00 page 430 of 1037...
Page 525: ...Rev 2 0 11 00 page 498 of 1037...
Page 543: ...Rev 2 0 11 00 page 516 of 1037...
Page 845: ...Rev 2 0 11 00 page 818 of 1037...