Rev. 1.0, 02/00, page 481 of 1141
Bit 6
Normal Stop Condition Detection Flag (STOP): Indicates that a stop condition has been
detected after completion of frame transfer in I
2
C bus format slave mode.
Bit 6
STOP
Description
0
No normal stop condition
(Initial value)
[Clearing condition]
1. When 0 is written in STOP after reading STOP = 1
2. When the IRIC flag is cleared to 0
1
•
In I
2
C bus format slave mode: Error stop condition detected
[Setting condition]
When a stop condition is detected after completion of frame transfer
•
In other modes:No meaning
Bit 5
I
2
C Bus Interface Continuous Transmission/Reception Interrupt Request Flag
(IRTR): Indicates that the I
2
C bus interface has issued an interrupt request to the CPU, and the
source is completion of reception/transmission of one frame in continuous transmission/reception
for which DTC activation is possible. When the IRTR flag is set to 1, the IRIC flag is also set to 1
at the same time.
IRTR flag setting is performed when the TDRE or RDRF flag is set to 1. IRTR is cleared by
reading IRTR after it has been set to 1, then writing 0 in IRTR. IRTR is also cleared automatically
when the IRIC flag is cleared to 0.
Note: *
This LSI does not incorporate DTC.
Bit 5
IRTR
Description
0
Waiting for transfer, or transfer in progress
(Initial value)
[Clearing condition]
1. When 0 is written in IRTR after reading IRTR = 1
2. When the IRIC flag is cleared to 0
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