ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
Figure 11. Pulse Mode Interrupts
High-Z
Driven high
High-Z
-INTR or
IRQ[XX]
Driven low
Bit 3 — Pulse System IRQ
0
1
RDY/-IREQ generated interrupts are passed to the IRQ[XX] pin as level-sensitive.
When a RDY/-IREQ interrupt occurs, the IRQ[XX] pin is driven with the pulse train shown in
Figure 11 and allows for interrupt sharing.
This bit selects Level or Pulse mode operation of the IRQ[XX] pins for interrupts from a PC Card
RDY/-IREQ pin ( Table 2).
Bit 4 — Speaker Enable
0
1
SPKR_OUT* is high-impedance.
SPKR_OUT* is driven from the XOR of -SPKR from each enabled socket.
This bit determines whether the card -SPKR pin will drive SPKR_OUT* ( Table 1).
Bit 7 — Inpack Enable
0
1
-INPACK pin (Table 2) ignored.
-INPACK pin used to control data bus drivers during I/O read from the socket.
This bit is used to determine when to drive data onto the ISA bus.
Datasheet
71
INTEL [ INTEL ]
