HD64F2168 Datasheet, PDF (593/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

R/W
Bit Bit Name Initial Value Slave Host Description
2 HWRI 0
R/(W)*  BT Host Write Interrupt
This status flag indicates that the host writes 1byte
to BTDTR buffer. When the IBFIE3 bit and HWRIE
bit are set to 1, IBFI3 interrupt is requested to the
slave.
0: Host BTDTR write wait state
[Clearing condition]
After the slave reads HWRI = 1, writes 0 to this bit.
1: The host writes to BTDTR
[Setting condition]
The host writes one byte to BTDTR.
1 HBTWI 0
R/(W)*  BTDTR Host Write Start Interrupt
This status flag indicates that the host writes the first
byte of valid data to BTDTR buffer. When the IBFIE3
bit and HBTWIE bit are set to 1, IBFI3 interrupt is
requested to the slave.
0: BTDTR host write start wait state
[Clearing condition]
After the slave reads HBTWI = 1 and writes 0 to this
bit.
1: BTDTR host write start
[Setting condition]
The host starts writing valid data to BTDTR.
0 HBTRI 0
R/(W)*  BTDTR Host Read End Interrupt
This status flag indicates that the host reads all valid
data from BTDTR buffer. When the BFIE3 bit and
HBTRIE bit are set to 1, IBFI3 interrupt is requested
to the slave.
0: BTDTR host read end wait state
[Clearing condition]
After the slave reads HBTRI = 1 and writes 0 to this
bit.
1: BTDTR host read end
[Setting condition]
When the host finished reading the valid data from
BTDTR.
Note: * Only 0 can be written to clear the flag.
Rev. 3.00, 03/04, page 553 of 830