SPD6729QCE Intel, SPD6729QCE Datasheet - Page 28

• 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
3.1.4.1
3.1.4.2
3.1.4.3
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Figure 7. A Common Mapping of PD6729 Interrupt Pins to
System Interrupt Signals
Classes of Interrupts
The PD6729 supports two classes of interrupts:
There are four card-status-change conditions that can be programmed to cause management
interrupts:
Either class of interrupts can be routed to any of the ten interrupt pins on the PD6729.
Connection of Interrupt Pins Programmed as PCI-Bus INT# Signals
Pins programmed as INT#-type interrupts can be connected to the correspondingly named signals
on the PCI bus.
If the management interrupt is being routed to a pin connected to a PCI-bus INT# signal, bit 4 of
the Extension Control 1 register should be set to a ‘1’. If the card interrupt is being routed to a pin
connected to a PCI-bus INT# signal, bit 3 of the Extension Control 1 register should be set to a
‘1’.
Although four of the ten PD6729 interrupt pins are labeled as INTA# through INTD#, any of the
ten interrupt pins can be used as PCI-type INT# signals.
Connection of Interrupt Pins Programmed as ISA-Architecture-Compatible
IRQ Signals
IRQ-type interrupts in PC-compatible systems are not generally shared by hardware. Therefore,
each device in the system using IRQ-type interrupts must have a unique interrupt line. Additionally,
many software applications assume that certain I/O devices use specific IRQ signals. To allow
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Socket or card interrupts initiated by a PCMCIA I/O-type card activating its RDY/-IREQ
signal
Management interrupts triggered by changes in PCMCIA card status
Card insertion or removal
Battery warning indicator (BVD2) change on a memory-type card
Battery dead indicator (BVD1) or I/O-type card status change (STSCHG)
Ready (RDY) status change on a PCMCIA memory-type card
PD6729
IRQ14/EXT_CLK
IRQ15/RI_OUT
IRQ5/INTC#
IRQ7/INTD#
IRQ4/INTB#
IRQ3/INTA#
IRQ10
IRQ11
IRQ12
IRQ9
INTA#
INTB#
INTC#
INTD#
IRQ9
IRQ10
IRQ11
IRQ12
IRQ14
IRQ15
PCI bus
ISA-type
interrupt
signals
in the system
architecture
Datasheet