SPD6729QCE Intel, SPD6729QCE Datasheet - Page 52

• Manufacturer Part Number: SPD6729QCE
• Description: PCI To PC Card (PCMCIA) Controller 208-Pin MQFP
• Manufacturer: Intel

Specifications of SPD6729QCE

• Package: 208MQFP
• Operating Temperature: 0 to 70 °C

PD6729 — PCI-to-PC Card (PCMCIA) Controller
7.4
52
Register Name: Interrupt and General Control
Index: 03h
Ring Indicate
Enable
RW:0
Bit 7
Card Reset*
Bit 4: V
Depending on the value of bit 5 below, setting this bit to a ‘1’ applies power to the card. The V
3.3V bit (see bit 1,
Note that this bit is reset to a ‘0’ when a card is removed from the socket unless the auto-power-off
feature is disabled by setting Extension Control 1 register bit 1 to a ‘1’; a write is required to
reactivate power to the card.
Extension Control 1 register bit 0, when set to ‘1’, prevents modification of the VCC Power bit by
writes to the Power Control register.
Bit 5: Auto-Power
When this bit is set to a ‘1’, the PD6729 allows power to the card to be turned on and off
automatically with the insertion and removal of a PCMCIA card.
Bit 7: Card Enable
When this bit is a ‘1’, the outputs to the PCMCIA card are enabled if a card is present and card
power is being supplied. The pins affected include -CE2, -CE1, -IORD, -IOWR, -OE, -REG,
RESET, A[25:0], D[15:0], and -WE.
Interrupt and General Control
RW:0
Bit 6
0
1
0
1
0
1
CC
Power
Card Is I/O
V
CD1 input levels.
V
are both active (low).
Outputs to card socket are not enabled and are floating.
Outputs to card socket are enabled if -CD1 and -CD2 are active low and bit 4 is a ‘1’.
Power is not applied to the card: the -VCC_3 and -VCC_5 socket power control pins are
inactive (high).
Power is applied to the card: if bit 5 is a ‘0’, or bit 5 is a ‘1’ and -CD2 and -CD1 are active low,
then the selected -VCC_3 or -VCC_5 socket power control pin is active (low).
RW:0
CC
CC
Bit 5
“Misc Control 1” on page
and V
and V
PP
PP
1 power control signals are activated independent of the socket’s -CD2 and -
1 power control signals are only activated if the socket’s -CD2 and -CD1 inputs
Manage Int
Enable
RW:0
Bit 4
70) determines whether 3.3V or 5V power is applied.
Bit 3
Bit 2
IRQ Level
RW:0000
Register Compatibility Type: 365
Bit 1
Register Per: socket
Datasheet
Bit 0
CC