Zilog EZ80190 Bedienungsanleitung PDF herunterladen (Seite 24)

eZ80190 Development Kit

User Manual

eZ80Acclaim! Development Platform UM014108-0810

•

Disable Ethernet (DIS_ETH)

•

Enable Flash (EN_FLASH)

•

Flash Write Enable (FlashWE)

•

Disable IrDA (DIS_IrDA—not used)

These four signals are described below.

Disable Ethernet

When active Low, the DIS_ETH

output signal disables the EMAC from

responding to CPU requests. As a result, additional input/output or mem-

ory devices can be used in the CS3

address space. The logic that disables

the Ethernet signal is listed in Appendix A

on page 74.

Disable Flash

When active Low, the EN_FLASH

input signal disables the Flash chip on

the eZ80190 Module.

Flash Write Enable

When active Low, the FlashWE

input signal enables Write operations on

the Flash boot block of the eZ80190 Module.

Disable IrDA

This signal does not perform a function on the eZ80190 Module. UART0

is always used with the RS232 interface on the eZ80Acclaim!

Develop-

ment Platform.

Application Module Interface

An Application Module Interface is provided to allow the user to add an

application-specific module to the

eZ80Acclaim!

Development Platform.

ZiLOG’s Thermostat Application Module (not provided in the kit) is an

example application-specific module that demonstrates an HVAC control

system.

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