Zilog EZ80190 User Manual
Page 40
eZ80190 Development Kit
User Manual
eZ80Acclaim! Development Platform
UM014108-0810
36
Jumper J3
The J3 jumper connection controls the mode of the general-purpose port
and communication with the 7 x 5 LED. When the shunt is placed, the
general-purpose port is disabled. See Table 13.
Jumper J7
The J7 jumper connection controls Flash boot loader programming. When
the shunt is placed, overwriting of the Flash boot loader program is
enabled. See Table 14.
Table 13. J3—DIS_EM
Shunt
Status
Function
Affected Device
In
Application Module
Hardware Disabled
Communication with 7 x 5 LED and Port emulation
circuit is disabled.
Out
Application Module
Hardware Enabled
Communication with 7 x 5 LED and the general-
purpose port circuit is enabled.
Table 14. J7—FlashWE
Shunt
Status
Function
Affected Device
Out
The Flash boot sector of the eZ80190
Module is write-protected.
Flash boot sector of the eZ80190
Module.
In
The Flash boot sector of the eZ80190
Module is enabled for writing or
overwriting.
Flash boot sector of the eZ80190
Module.