HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 440

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

SCSR1—Serial control/status register
436
Bit
Initial value
Read/Write
Note:
*
Only a write of 0 for flag clearing is possible.
—
—
7
1
Extended data bit
SOL
R/W
0
1
6
0
Read
Write
Read
Write
ORER
R/(W)
Overrun error flag
0 [Clearing condition]
1 [Setting condition]
5
0
SO
SO
SO
SO
TAIL MARK transmit flag
0 Idle state and 8- or -16-bit data transfer in progress
1 TAIL MARK transmission in progress
After reading 1, cleared by writing 0
Set if a clock pulse is input after transfer
is complete, when an external clock is used
*
1
1
1
1
pin output level is low
pin output level changes to low
pin output level is high
pin output level changes to high
Start flag
0
1
—
—
4
1
Read
Write
Read
Write
Indicates that transfer is stopped
Invalid
Indicates transfer in progress
Starts a transfer operation
—
—
3
1
H'FFA1
—
—
2
1
MTRF
R
1
0
R/W
STF
0
0
SCI1