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參數(shù)資料
| 型號： | SPD6729QCE |
| 廠商： | INTEL CORP |
| 元件分類： | 總線控制器 |
| 英文描述： | PCMCIA BUS CONTROLLER, PQFP208 |
| 封裝： | MQFP-208 |
| 文件頁數(shù)： | 65/116頁 |
| 文件大?。?/td> | 1442K |
| 代理商： | SPD6729QCE |
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PD6729 — PCI-to-PC Card (PCMCIA) Controller
52
Datasheet
Bit 4: VCC Power
Depending on the value of bit 5 below, setting this bit to a ‘1’ applies power to the card. The VCC
3.3V bit (see bit 1, “Misc Control 1” on page 70) determines whether 3.3V or 5V power is applied.
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.
7.4
Interrupt and General Control
0
Power is not applied to the card: the -VCC_3 and -VCC_5 socket power control pins are
inactive (high).
1
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).
0
VCC and VPP1 power control signals are activated independent of the socket’s -CD2 and -
CD1 input levels.
1
VCC and VPP1 power control signals are only activated if the socket’s -CD2 and -CD1 inputs
are both active (low).
0
Outputs to card socket are not enabled and are floating.
1
Outputs to card socket are enabled if -CD1 and -CD2 are active low and bit 4 is a ‘1’.
Register Name: Interrupt and General Control
Index: 03h
Register Per: socket
Register Compatibility Type: 365
Bit 7Bit 6Bit 5Bit 4Bit 3
Bit 2Bit 1
Bit 0
Ring Indicate
Enable
Card Reset*
Card Is I/O
Manage Int
Enable
IRQ Level
RW:0
RW:0000
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