Z86M1720ASC 查看數據表（PDF） - Zilog

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Z86M1720ASC

PCMCIA Interface Solution

Zilog 

Z86017/Z16017 PCMCIA Interface Solution

Product Specification

77

PCMCIA Host Writes

PCMCIA Host Reads

PC_DATA<15-8>

PC_DATA<7-0>

Data

MUX

PC_DATA<15-8>

ATA_DATA<7-0>

PC_DATA<7-0>

Data

Reciever

Data

Latch

ATA_DATA<7-0>

Figure 11. Word-to-Byte Mode Data Path

• PCMCIA Host Write

PC_DATA<7–0> (Even Byte) written to ATA_DATA<7–0>

PC_DATA<15–8> (Odd Byte) written to ATA_DATA<7–0>

• PCMCIA Host Read

The PCMCIA selects an even address, then the ZX6017 pulls WAIT

and reads the even register from the peripheral device, saves it in a

latch, increments the local peripherals address bus, then reads the odd

data byte and clears the PCMCIA WAIT pin.

ATA_DATA<7–0> (Even Byte) put onto PC_DATA<7–0>

ATA_DATA<7–0> (Odd Byte) put onto PC_DATA<15–8>

Table 60 describes the PCMCIA Host read and write address examples.

Programming Internal Registers

PS012002-1201

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