Zilog EZ80L92 Manual do Utilizador descarregar pdf (Página 38)

eZ80L92 Development Kit

User Manual

Operational Description UM012913-0407

PB2

The PB2 push button switch, SW3, is connected to bit 2 of the general-

purpose port. This switch can be used as the port input.

RESET

The Reset push button switch, SW4, resets the eZ80

CPU and the

eZ80Acclaim!

Development Platform.

Jumpers

The eZ80Acclaim!

Development Platform provides a number of jump-

ers that are used to enable or disable functionality on the platform, enable

or disable optional features, or provide protection from inadvertent use.

Jumper J2

The J2 jumper connection enables/disables IrDA transceiver functional-

ity. When the shunt is placed, IrDA communication is disabled. See

Table 13.

Table 13. J2—DIS_IrDA

Shunt

Status Function Affected Device

IN IrDA interface disabled UART0 is configured to work with the RS232 or the

RS485 interfaces.

OUT IrDA interface enabled The IrDA and UART0 interfaces on the eZ80L92

Module perform their functions.

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