Z86M1720ASC 查看數據表（PDF） - Zilog

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Z86M1720ASC

PCMCIA Interface Solution

Zilog 

Z86017/Z16017 PCMCIA Interface Solution

Product Specification

18

PIN FUNCTIONS

PCMCIA Signals

• PC_DATA<15:0> ( I/O, Tristate, 8 mA)

PCMCIA Mode: 16-bit host Data bus.

ATA/IDE Mode: 16-bit host Data bus.

• PC_HA<10:3> (Input)

PCMCIA Mode: Host Address lines: 10,9,8,7,6,5,4,3.

ATA/IDE Mode: Not used.

• PC_HA<2:0> I(nput)

PCMCIA Mode: Host Address lines: 2,1,0.

ATA/IDE Mode: Host Address lines: 2,1,0.

• PC_HCE1//HCS0 (Input, 100K Pull-Up)

PCMCIA Mode: This signal is Card Enable 1 (active Low).

ATA/IDE Mode: Host Chip Select 0 (active Low).

• PC_HCE2//HCS1 (Input, 100K Pull-Up)

PCMCIA Mode: This signal is Card Enable 2 (active Low).

ATA/IDE Mode: Host Chip Select 1 (active Low).

• PC_REG/DACK (Input, 100K Pull-Up)

PCMCIA Mode: (/REG), Register bit is asserted when the host

selects I/O or Attribute Memory.

ATA/IDE Mode: Data acknowledge (/DACK) defined in ATA. Issued

during DMA data transfers on the data bus.

• PC_ATA//HOE ( Input, 100K Pull-Up)

PCMCIA Mode: Memory Output Enable Strobe.

ATA/IDE Mode: When pulled Low on Power-On Reset, this signal

indicates ATA/IDE mode.

• PC_HWE (Input, 100K Pull-Up)

PCMCIA Mode: Memory Write Enable Strobe.

ATA/IDE Mode: Not used.

PS012002-1201

PCMCIA Interface Overview

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