HD64F2168 Datasheet, PDF (596/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

R/W
Bit Bit Name Initial Value Slave Host Description
1 CRRPI 0
R/(W)*  Read Pointer Clear Interrupt
This status flag indicates that the CLR_RD_PTR bit
in BTCR is set to 1 by the host. When the IBFIE3 bit
and CRRPIE bit are set to 1, the IBFI3 interrupt is
requested to the slave.
0: [Clearing condition]
After the slave reads CRRPI = 1, writes 0 to this
bit.
1: [Setting condition]
When the slave detects the rising edge of
CLR_RD_PTR.
0 CRWPI 0
R/(W)*  Write Pointer Clear Interrupt
This status flag indicates that the CLR_WR_PTR bit
in BTCR is set to 1 by the host. When the IBFIE3 bit
and CRWPIE bit are set to 1, the IBFI3 interrupt is
requested to the slave.
0: [Clearing condition]
After the slave reads CRWPI = 1, writes 0 to this
bit.
1: [Setting condition]
When the slave detects the rising edge of
CLR_WR_PTR.
Note: * Only 0 can be written to clear the flag.
Rev. 3.00, 03/04, page 556 of 830