
CHAPTER 13 CARDU1, CARDU2 (PC CARD UNITS)
User’s Manual U14579EJ2V0UM
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Bit
Name
Function
11
3V_CARD_DT
Detects a 3 V card
1: Detect a card that is operating at 3 V
0: Detect a card that is not operating at 3 V
10
5V_CARD_DT
Detects a 5 V card
1: Detect a card that is operating at 5 V
0: Detect a card that is not operating at 5 V
9
BAD_VCC_REQ
Invalid VCC request
1: Software requests an invalid VCC
0: Software requests a valid VCC
However, if the BAD_VCC_REQ_DISB bit of the SYSCNT register within the
configuration registers is 1, the request will be according to that bit.
8
DATA_LOST
Determines the possibility of data being lost by removing the card
1: Data may be lost
0: Data is not lost
7
NOT_A_CARD
Determines whether a card that can be recognized was inserted
1: A card that cannot be recognized was inserted
0: A card that can be recognized was inserted
6
READY
Status of the READY signal of the memory card or IREQ# signal (corresponds to the
READY1 or READY2 signal of the VRC4173) of the I/O card
1: Low level
0: High level
5
CB_CARD_DT
Note
Whether or not the CardBus card (32-bit PC card) is to be detected
1: Detected
0: Not detected
4
R2_CARD_DT
Whether or not the R2 PC card (16-bit PC card) is to be detected
1: Detected
0: Not detected
3
POW_UP
Status of power to the socket
1: Power up completed
0: Power down
2
CCD20
Whether or not the PC card is connected (status of CCD2# signal (corresponds to
the CD12# or CD22# signal of the VRC4173))
1: Not connected (high level)
0: Connected (low level)
1
CCD10
Whether or not the PC card is connected (status of CCD1# signal (corresponds to
the CD11# or CD21# signal of the VRC4173))
1: Not connected (high level)
0: Connected (low level)
0
CSTSCHG
Note
Status of the CSTSCHG signal (corresponds to the BVD11# or BVD21# signal of the
VRC4173) of the CardBus card
1: High level
0: Low level
Note The CARDU of the VRC4173 does not support a 32-bit PC card (CardBus card).
This register indicates the status of the power supply voltage that is supplied to a card connected to the PC card
bus.