SPD6729QCE Intel, SPD6729QCE Datasheet - Page 42

• 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
5.6
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Interrupt
Interrupt
Max_Lat
Min_Gnt
Byte 3
Byte 2
Byte 1
Byte 0
Line
Pin
Configuration Register Name: Interrupt Line, Interrupt Pin, Min_Gnt, and Max_Lat
Offset: 3Ch
Bit 31
Bit 23
Bit 15
Interrupt Line, Interrupt Pin, Min_Gnt, and Max_Lat
Bits 7-0: Interrupt Line
For other than PCMCIA-controller-type PCI devices, this field indicates interrupt line routing.
Although this register is read/write for PCI compatibility, no interrupt line routing is controlled by
this register on the PD6729. Because the PD6729 must dynamically configure interrupt usage, the
actual routing to the appropriate interrupt line is made by writing to interrupt-type-specific
interrupt control bit settings in the Operation registers (see the Interrupt and General Control
register).
Bits 15-8: Interrupt Pin
For other than PCMCIA-controller-type PCI devices, this read-only field indicates which interrupt
pin the device uses. Because the PD6729 must dynamically configure interrupt usage, the actual
connection of interrupt pins is defined by interrupt control bit settings in the Operation registers
(see the Management Interrupt Configuration register). This field always reads back 01h.
Bits 31-24: Max_Lat
This field indicates the maximum time that can occur between PCI bus accesses to the PD6729
while still efficiently performing transfers to or from PCMCIA cards. The value programmed is in
250-ns increments, based on full-speed PCI_CLK operation. This field always reads back 00h,
indicating that there are no major latency requirements.
Bit 7
Bit 30
Bit 22
Bit 14
Bit 6
Bit 29
Bit 21
Bit 13
Bit 5
Bit 28
Bit 20
Bit 12
Bit 4
R:XXXXXXXX
RW:00000000
Interrupt Line
R:00000000
Interrupt Pin
R:00000001
Reserved
Max_Lat
Bit 27
Bit 19
Bit 11
Bit 3
Bit 26
Bit 18
Bit 10
Bit 2
Bit 25
Bit 17
Bit 9
Bit 1
Register Per: chip
Datasheet
Bit 24
Bit 16
Bit 8
Bit 0