Zilog EZ80L92 Bedienungsanleitung PDF herunterladen (Seite 24)

eZ80L92 Development Kit

User Manual

Operational Description UM012913-0407

These four inputs 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 inputs, outputs, or

memory devices can be used in the CS3 address space. The logic that dis-

ables the Ethernet signal is listed in Appendix A on page 75.

Enable Flash

When active Low, the EN_FLASH

input signal disables the Flash chip on

the eZ80L92 Module.

Flash Write Enable

When active Low, the FlashWE

input signal enables Write operations on

the Flash boot block of the eZ80L92 Module.

Disable IrDA

When the DIS_IrDA

input signal is pulled Low, the IrDA transceiver,

located on the eZ80L92 Module is disabled. As a result, UART0 can be

used with the RS232 or the RS485 interfaces on the eZ80Acclaim!

Development Platform.

Application Module Interface

An application module interface is provided to allow you 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. Implementing an application module with the application module

interface requires that the

eZ80L92 Module

also be mounted on the

eZ80Acclaim!

Development Platform, as the

eZ80L92 Module

contains

the eZ80L92 microprocessor. To mount an application module, use the two

male headers J6 and J8.

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