
Rev. 2.0, 09/99, page 97 of 364
PCC0 Card Status Change Register (PCC0CSCR) [cont’d]
Bit
Description
Default
5
If this bit is high: Indicates that an interrupt request for the IREQ pin in the PC card has
occurred when the PC card is in the I/O and Memory card interface.
If this bit is low: Indicates no interrupt request for the IREQ pin in the PC card when the
PC card is in the I/O and Memory card interface. (Initial value)
This bit can be reset to 0 only in the pulse mode. To reset, write “0” to this bit. This bit is
not changed if 1 is written.
In the level mode, bit 5 is a READ-only bit that reflects the state of IREQ pin (if the IREQ
pin is in the low level, 1 is read). In this bit, 0 is always read in the IC memory card
interface.
1
4
If this bit is high: Indicates that the STSCHG pin in the PC card is changed from 1 to 0
when the PC card is in the I/O and Memory card interface.
If this bit is low: Indicates that the value of pin STSCHG on the PC card remains
unchanged when the PC card is in the I/O and Memory card interface. (Initial value)
When the STSCHG pin is changed from 1 to 0, this bit is set to 1. To reset, write “0” to this
bit when it is set to “1”. This bit is not changed if 1 is written. In this bit, 0 is always read in
the IC memory card interface.
0
3
If this bit is high: Indicates that CD1 and CD2 in the PC card are changed.
If this bit is low: Indicates that CD1 and CD2 in the PC card are not changed. (Initial value)
Write 0 to bit 3 in order to reset this bit to 0. This bit is not changed if 1 is written.
0
2
If this bit is high: Indicates that pin READY in the PC card is changed from 0 to 1 when the
PC card is in the IC memory card interface.
If this bit is low: Indicates that pin READY in the PC card is not changed when the PC
card is in the IC memory card interface. (Initial value)
WRITE 0 to bit 2 in order to reset this bit to 0. This bit is not changed if 1 is written. In this
bit, 0 is always read in the I/O and Memory card interface.
0
1
If this bit is high: Indicates that pins BVD2 and BVD1 in the PC card are in the battery
warning state that the battery must be replaced although the data integrity is guaranteed
when the PC card is in the IC memory card interface.
If this bit is low: Indicates that pins BVD2 and BVD1 in the PC card are not in the battery
warning state when the PC card is in the IC memory card interface. (Initial value)
This bit is updated when the BVD2 and BVD1 pins are changed. Write 0 to bit 2 in order to
reset this bit to 0. This bit is not changed if 1 is written. In this bit, 0 is always read in the
I/O and Memory card interface.
0
If this bit is high: Indicates that pins BVD2 and BVD1 in the PC card are in the state that
he battery must be replaced since the data integrity is not guaranteed when the PC card is
in the IC memory card interface.
If this bit is low: Indicates that pins BVD2 and BVD1 in the PC card are not in the state
that he battery must be replaced since the data integrity is not guaranteed when the PC
card is in the IC memory card interface. (Initial value)
This bit is updated when the BVD2 and BVD1 pins are changed. Write 0 to bit 2 in order to
reset this bit to 0. This bit is not changed if 1 is written. In this bit, 0 is always read in the
I/O and Memory card interface.
0