Zilog EZ80L92 User Manual
Page 40
eZ80L92 Development Kit
User Manual
Operational Description
UM012913-0407
36
Jumper J11
The J11 jumper connection controls access to the off-chip Flash memory
device. When the shunt is placed, access to this Flash device is enabled.
See
The silk-screened label on the eZ80Acclaim!
®
Development Platform for
jumper J11 is incorrect. Currently, it reads DIS_FLASH. The correct label
is EN_FLASH.
Jumper J12
The J12 jumper connection controls the selection of a 5 V or 3 VDC power
supply to the embedded modem, if an embedded modem is used. See
Table 16. J11—EN_FLASH (Off-Chip)*
Shunt
Status
Function
Affected Device
IN
All access to external Flash memory on
the eZ80L92 Module is enabled.
External Flash memory on the
eZ80L92 Module.
OUT
All access to external Flash memory on
the eZ80L92 Module is disabled.
External Flash memory on the
eZ80L92 Module.
Note: As shipped from the factory, external Flash memory is not installed.
Table 17. J12—Power Supply to an Embedded Modem
Shunt
Status
Function
Affected Device
1–2
5 V DC is provided to power the embedded
modem.
Embedded modem.
2–3
3.3 V DC is provided to power the
embedded modem.
Embedded modem.
Note: