Z86017 datasheet(70/138 Pages) ZILOG

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Z86017/Z16017 PCMCIA Interface Solution

Product Specification

PS012002-1201

Programming Internal Registers

EEPROM Register

Address: SELECT 13h

Name: Window 1 Range Address LSB

Type: Write/Read

EEPROM Register

Address: SELECT 14h

Name: Window 2 Control Register

Type: Write/Read

Table 33.

Window 1 Range Address LSB: Address 13h

Bit Placement

Bit Name

Description

Bits 7-0

LSB range Address for Port 1

Table 34.

Window 2 Control Register: Address 14h

Bit Placement

Bit Name

Description

Bit 0

DIS_PAC2

When this bit is set to 1, it disables Port 2 address control

and decoder.

Bit 1

EN_PAC2_MEM

When this bit is set to 1, Memory Mode decoder is

enabled. When it is cleared, the I/O Mode decoder is

enabled.

Bit 2

EN_PAC2_16

When this bit is set, data swapping is provided internal to

the chip during data reads from the low byte of the ATA

bus to the PCMCIA bus high byte, and from the high byte

of the PCMCIA bus to the low byte of the ATA bus during

data writes. When this bit is cleared, it is high byte to high

byte and low byte to low byte.

Bit 3

READ_PROTECT

Allows two cards at the same address to be read from.

When this bit is set, it prevents the PCMCIA bus from

becoming active.

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