Zilog eZ80F92 User Manual
Page 40
eZ80F92 Development Kit
User Manual
eZ80Acclaim!
®
Development Platform
UM013911-0607
36
Jumper J3
The J3 jumper connection controls Port A emulation mode and communi-
cation with the 7 x 5 LED. When the shunt is placed, Port A emulation is
disabled. See Table 14.
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 15.
Table 14. 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 Port A emulation
circuit is enabled.
Table 15. J7—FlashWE (Off-Chip)*
Shunt
Status
Function
Affected Device
Out
The Flash boot sector of the eZ80F92
Flash Module is write-protected.
Flash boot sector of the eZ80F92 Flash
Module.
In
The Flash boot sector of the eZ80F92
Flash Module is enabled for writing or
overwriting.
Flash boot sector of the eZ80F92 Flash
Module.
Note: As shipped from the factory, external Flash memory is not installed.