spd6722qcce Intel Corporation, spd6722qcce Datasheet - Page 30

• Manufacturer Part Number: spd6722qcce
• Description: Isa-to-pc-card Pcmcia Controllers
• Manufacturer: Intel Corporation

PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
4.1.3
4.1.4
30
Address
Control
Clock
INTR
IRQs
Data
Figure 7. Functional Block Diagram
Interface
Interrupt
Synthe-
Control
Per Chip
PD67XX Functional Blocks
Interrupts
The PD67XX provides ten interrupt pins that are labeled with names suggesting their mapping in
the system, though there are no hard requirements specifying the exact mapping. Typically, all ten
interrupt pins should be connected to system interrupt signals to allow maximum flexibility in
programming interrupt routing from the PD67XX.
Classes of Interrupts
The PD67XX supports two classes of interrupts:
Either class of interrupts can be routed to any of the ten interrupt pins on the PD67XX.
sizer
Unit
Bus
•
•
Socket or card interrupts initiated by the PC Card activating its RDY/-IREQ signal
Management interrupts triggered by changes in PC Card status, including:
— 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 memory-type card
Per Socket
Operation
Registers
Mapper
Offset
and
Write
FIFO
Timing Control
Bus Control
Socket
Socket
Power Control
WP/-IOIS16
-WAIT
Control
Data
Address
CD1, CD2
BVD, -STSCHG
RDY/-IREQ
V
V
CC
PP
Datasheet
Control
Control