參數(shù)資料
型號: CL-PD6722
廠商: Cirrus Logic, Inc.
英文描述: ISA-TOOPC-CARD HOST ADAPTERS
中文描述: ISA的TOOPC卡主機(jī)適配器
文件頁數(shù): 59/128頁
文件大?。?/td> 1591K
代理商: CL-PD6722
CL-PD6710/’22
ISA–to–PC-Card Host Adapters
May 1997
59
PRELIMINARY DATA SHEET v3.1
EXTENSION REGISTERS
Figure 9-1. Pulse Mode Interrupts
Bit 3 — Pulse System IRQ
This bit selects Level or Pulse mode operation of the IRQ[XX] pins for interrupts from a PC Card
RDY/-IREQ pin (see
page 17
).
Bit 4 — Speaker Enable
This bit determines whether the card -SPKR pin will drive SPKR_OUT* (see
page 15
).
Bit 7 — Inpack Enable
This bit is used to determine when to drive data onto the ISA bus.
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 9-1
and allows for interrupt sharing.
0
1
SPKR_OUT* is high-impedance.
SPKR_OUT* is driven from the XOR of -SPKR from each enabled socket.
0
1
-INPACK pin (see
page 17
) ignored.
-INPACK pin used to control data bus drivers during I/O read from the socket.
-INTR or
IRQ[XX]
High-Z
High-Z
Driven low
Driven high
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