PD6710 查看數據表（PDF） - Intel

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PD6710

ISA-to-PC-Card (PCMCIA) Controllers

Intel 

ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22

Table 1. ISA Bus Interface Pins (Sheet 2 of 4)

Pin Name

Description

MEMR*

MEMW*

REFRESH*

ALE

PWRGOOD

AEN

MEMCS16*

IOCS16*

IOCHRDY

Memory Read: This input indicates that a

host memory read cycle is occurring.

Connect to ISA signal MEMR*.

Memory Write: This input indicates that a

host memory write cycle is occurring.

Connect to ISA signal MEMW*.

Refresh: This input indicates a memory

refresh cycle is occurring and will cause the

PD67XX to ignore memory accesses on the

bus. Connect to ISA signal REFRESH*.

Address Latch Enable: A high on this input

indicates a valid memory address on the

LA[23:17] bus lines. Connect to ISA signal

BALE.

Power Good: The PD67XX will be reset

when the POWERGOOD input is low.

Connect to the POWERGOOD signal from

the system power supply; or, if not available,

connect to inverted RESETDRV signal from

ISA bus.

Address Enable: This is an input from the

host CPU bus signal that distinguishes

between DMA and non-DMA bus cycles.

This input should be high for a DMA cycle

and will cause the PD67XX to ignore IOR*

and IOW* except when a PD6722 is

configured for DMA and its DREQ (IRQ10)

and DACK* (IRQ9) signals are active.

Connect to ISA signal AEN.

When PD67XX is in Suspend mode (see

“Misc Control 2” on page 72), pull this input

high during system power-down for lowest

power consumption.

Memory Select 16: This output is an

acknowledge of 16-bit-wide access support

and is generated by the PD67XX when a

valid 16-bit-word-accessible memory

address has been decoded. Connect to ISA

signal MEMCS16*.

I/O Select 16: This output is an

acknowledge for 16-bit-wide access support

and is generated by the PD67XX when a

valid 16-bit word accessible I/O address has

been decoded. Connect to ISA signal

IOCS16*.

I/O Channel Ready: This output is driven

low by the PD67XX to lengthen host cycles.

Connect to the ISA bus IOCHRDY signal.

Pin Number

PD6710

PD6722

83

145

82

144

119

180

105

166

141

201

126

187

99

160

97

158

127

188

Qty. I/O Pwr. Drive

1

I

4

–

1

I

4

–

1

I

4

–

1

I

4

–

1

I

4

–

1

I

4

–

1 O-OD 4 16 mA

1 O-OD 4 16 mA

1 O-TS 4 16 mA

Datasheet

17

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