713
Bit 5
IRTR
Description
0
Waiting for transfer, or transfer in progress
[Clearing conditions]
1. When 0 is written in IRTR after reading IRTR = 1
2. When the IRIC flag is cleared to 0
(Initial value)
1
Continuous transfer state
[Setting condition]
•
In I
2
C bus interface slave mode
When the TDRE or RDRF flag is set to 1 when AASX = 1
•
In other modes
When the TDRE or RDRF flag is set to 1
Bit 4—Second Slave Address Recognition Flag (AASX): 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.
AASX is cleared by reading AASX after it has been set to 1, then writing 0 in AASX. AASX is
also cleared automatically when a start condition is detected.
Bit 4
AASX
Description
0
Second slave address not recognized
[Clearing conditions]
1. When 0 is written in AASX after reading AASX = 1
2. When a start condition is detected
3. In master mode
(Initial value)
1
Second slave address recognized
[Setting condition]
When the second slave address is detected in slave receive mode and FSX = 0
Bit 3—Arbitration Lost (AL): This flag indicates that arbitration was lost in master mode. The
I
2
C bus interface monitors the bus. When two or more master devices attempt to seize the bus at
nearly the same time, if the I
2
C bus interface detects data differing from the data it sent, it sets AL
to 1 to indicate that the bus has been taken by another master.
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...