spd6722qcce Intel Corporation, spd6722qcce Datasheet - Page 50
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spd6722qcce
Manufacturer Part Number
spd6722qcce
Description
Isa-to-pc-card Pcmcia Controllers
Manufacturer
Intel Corporation
Datasheet
1.SPD6722QCCE.pdf
(138 pages)
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PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
50
Bits 1:0 — V
These bits are intended to be used to control the power to the V
Bit 4 — V
Depending on the value of bit 5 below, setting this bit to ‘1’ will cause power to be applied to the
card. The V
power is applied.
Bit 5 — Auto-Power
When this bit is set to ‘1’, the PD67XX causes power to the card to be turned on and off
automatically with the insertion and removal of a PC card from the socket.
Bit 7 — Card Enable
When this bit is ‘1’, the outputs to the PC 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 (see
1. Under conditions where V
Bit 1
0
0
1
1
V
0
1
0
1
PP
0
1
1 Power
CC
CC
Bit 0
3.3V bit (see bit 1,
PP
Power
V
CD1 input levels.
V
are 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 ‘1’.
0
1
0
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 ‘0’, or bit 5 is ‘1’ and -CD2 and -CD1 are active low,
then the selected -VCC_3 or -VCC_5 socket power control pin is active low.
CC
CC
1 Power
and V
and V
PP
PP
Active high
Inactive low
Inactive low
Inactive low
VPP_PGM
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
1 power is activated. See
Table
“Misc Control 1” on page
a
2).
Active high
Inactive low
Inactive low
Inactive low
VPP_VCC
“Power Control” on page
1
Zero volts to PC Card socket V
Selected card V
pin
+12V to PC Card socket V
Zero volts to PC Card socket V
70) determines whether 3.3V or 5V
PC Card Intended Socket Function
PP
1 pin of the PC Card.
CC
48.
to PC Card socket V
PP
1 pin
PP
PP
Datasheet
1 pin
1 pin
PP
1
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