Z86017 Datasheet, PDF (32/138 Pages) Zilog, Inc. – PCMCIA Interface Solution

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