Z86M1720ASC 查看數據表（PDF） - Zilog

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Z86M1720ASC

PCMCIA Interface Solution

Zilog 

Z86017/Z16017 PCMCIA Interface Solution

Product Specification

28

The four on-chip address maps are:

• Memory_Map_1

• Memory_Map_2

• Memory_Map_3

• PCMCIA_ATA/IDE Map

Memory_Map_1, _2 and _3 support PCMCIA Memory/IO Mode. The

chip can be configured in PCMCIA Mode either by:

• Pulling the PC_ATA/HOE pin High during RESET;

or by

• Writing 10 in Override bits (bits 3, 2) in the Interface Configuration

Register 0 (address 00h), and 0 in bits 0, 1, 2, 6 of the Interface

Configuration Register 02 (address 03h).

After placing the device into PCMCIA Mode, each Map can be

configured independently through its set of configuration registers.

Each Memory Map contains a set of Configuration Registers consisting

of:

• Window Control Register

• Window Start Address LSB Register

• Window Start/Range Address MSB

• Window Range Address LSB

The PCMCIA_ATA/IDE Map enables chip operation in PCMCIA_ATA/

IDE mode. When in this mode, the chip responds to different types of

accesses, depending on the content of the following registers:

• Interface Configuration Register 02, address 03h (bits 0, 1, 6)

• Interface Configuration Register 03, address 04h (bits 0, 1, 2, 3)

• PCMCIA Exception Status Register, address 071h (bit 0)

PS012002-1201

Addressing Modes

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