Jumpers – Zilog EZ80F91 User Manual
Page 39
eZ80F91 Development Kit
User Manual
UM014220-0508
eZ80 Development Kit
34
RESET
The Reset push button switch, SW4, resets the eZ80
®
CPU and the
eZ80Acclaim!
®
Development Kit.
Jumpers
The eZ80Acclaim! Development Kit provides a number of jumpers that
are used to enable or disable functionality on the platform, enable or dis-
able optional features, or to 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
Jumper J3
The J3 jumper connection controls GPIO emulation mode and communi-
cation with the 7 x 5 LED. When the shunt is placed, GPIO emulation is
disabled. See
Table 16. J2—DIS_IrDA
Shunt
Status Function
Affected Device
IN
IrDA on eZ80F91
Module disabled
UART0 is configured to work with the RS-232 or the RS-485
interfaces.
OUT
IrDA on eZ80F91
Module enabled
IrDA is enabled to work with UART0 on the eZ80F91 device.