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Bit
Bit Name
1
CRRPI
0
CRWPI
Note:
* Only 0 can be written to clear the flag.
R/W
Initial
Value
Slave
Host Description
R/(W)*
0
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.
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.
Rev. 1.00 Mar. 12, 2008 Page 723 of 1178
Section 19 LPC Interface (LPC)
REJ09B0403-0100
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