Zilog EZ80L92 - Manual (Page 24)

eZ80L92 Development Kit
User Manual
Operational Description UM012913-0407
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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.