Z86017 Datasheet, PDF (41/138 Pages) Zilog, Inc. – PCMCIA Interface Solution

Z86017/Z16017 PCMCIA Interface Solution
Product Specification
27
Addressing Modes
• The ZX6017 supports all PCMCIA Addressing Modes:
• PCMCIA Common Memory Mode
• PCMCIA I/O Mode
• PCMCIA ATA_IDE Mode
• Pass-through ATA/IDE-to-ATA/IDE Mode
Note: This mode is for users who have a 68-pin PCMCIA connector,
but are using ATA/IDE protocol instead of PCMCIA protocol.
The overall ZX6017 mode of operation is controlled by the Interface
Configuration Register (00h) bits 3,2. 00 in these two bits sets the device
to ATA/IDE mode if the PC_ATA/HOE pin is Low on power-up and into
PCMCIA mode if the pin is High. The default for this register is 00 and
the PC_ATA/HOE pin determines the mode of operation, PCMCIA or
ATA/IDE. Table 4 describes these addressing modes.
Table 4. ZX6017 Addressing Modes
Mode/Bus
Memory
I/O
PCMCIA_ATA_Memory
PCMCIA_ATA_I/O
PCMCIA
Memory
I/O
Memory
I/O
Pass-Through Mode
ATA/IDE
Peripheral Bus
Memory
I/O
ATA
Primary ATA
Secondary ATA
Contiguous ATA
ATA/IDE
Comments
Contiguous block of at least
16 I/O registers is assigned to
one card.
To place the ZX6017 into proper Addressing mode, a set of Configuration
Registers and Memory Maps reside on-chip.
Addressing Modes
PS012002-1201