spd6722qcce Intel Corporation, spd6722qcce Datasheet - Page 18

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

PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
18
IRQ[14, 11, 7,
5:3]
IRQ9
IRQ10
IRQ12/
LED_OUT*
IRQ15/
RI_OUT*
-INTR
ZWS*
Pin Name
Table 1.
Interrupt Request: These outputs indicate
programmable interrupt requests generated
from any of a number of card actions.
Although there is no specific mapping
requirement for connecting interrupt lines
from the PD67XX to the system, a common
use is to connect these pins to the
corresponding ISA signal names in the
system.
Interrupt Request 9: In default mode this
output indicates an interrupt request from
one of the cards.
When the PD6722 is in DMA mode (see
Misc Control 2, bit 6), IRQ9 becomes an
input and is connected to the ISA bus
DACK* line corresponding to the ISA bus
DREQ line that the IRQ10 pin is connected
to. In DMA mode this signal is active-low.
Interrupt Request 10: In IRQ mode this
output indicates an interrupt request from
one of the cards.
When the PD6722 is in DMA mode (see
Misc Control 2, bit 6), IRQ10 is the DREQ
to be connected to DREQ0, 1, 2, 3, 5, 6, 7 of
the ISA bus. In DMA mode this signal is
active-high.
Interrupt Request 12 / LED Output: In
default IRQ mode this output indicates an
interrupt request from one of the cards, and
is connected to the ISA bus IRQ12 signal.
When the Drive LED Enable bit (see
— Drive LED Enable” on page
this output becomes an open-drain driver for
a disk-active LED (see ATA Control
register bit 1) or PC Card activity LED (see
Extension Control 1 register bit 2).
Interrupt Request 15 / Ring Indicate
Output: In IRQ mode this output indicates
an interrupt request from one of the cards.
When the IRQ15/RI_OUT* Is RI Out bit (see
“Bit 7 — IRQ15 Is RI Out” on page
to ‘1’, this output is the -RI signal from the
corresponding PC Card.
Interrupt: This output indicates a
management interrupt. This should be
connected to the system processor’s SMI or
NMI interrupt input, depending on the type
of processor used.
Zero Wait State: This output is connected
to the ISA ZWS (0WS) signal. It is driven low
by the PD67XX when it is able to complete
the current memory access cycle in zero
wait states.
ISA Bus Interface Pins (Sheet 3 of 4)
Description
73) is set,
74) is set
“Bit 4
113, 111, 109
86, 93, 116,
PD6710
138
143
131
95
90
88
Pin Number
148, 154, 177,
174, 172, 170
PD6722
198
156
152
150
203
191
Qty.
6
1
1
1
1
1
1
I/O-TS
O-OD
O-OD
O-TS
O-TS
O-TS
O-TS
O-TS
I/O
or
Pwr.
4
4
4
4
4
4
4
Datasheet
12 mA
16 mA
Drive
2 mA
2 mA
2 mA
2 mA
2 mA