Analog Devices Blackfin A-V EZ-Extender, Manual

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Jumpers
2-12 Blackfin A-V EZ-Extender Manual
VID_OUT Data Bus Control Jumpers (JP5.3/4,
JP5.5/6)
The
JP5.3/4
and
JP5.5/6
jumpers are used together to set up the direc-
tion of and enable/disable the
VID_OUT
data bus drivers. Table 2-6 shows
different combinations of
JP5.3/4
and
JP5.5/6
.
PPI0_SYNC1 Direction Setup Jumper (JP6.1/3/5)
The direction of the
PPI0_SYNC1
signal can be either fixed or programmed,
depending on the state of a general-purpose flag. Table 2-7 shows how to
set up the
PPI0_SYNC1
direction.
Table 2-6. Video Out Data Bus Control Jumper Combinations
JP5.3/4 JP5.5/6 VID_OUT Status
Uninstalled Uninstalled
VID_OUT
,
PPI1
are all not driven;
PPI0
depends on the
state of
JP9.2/4/6
Uninstalled Installed
PPI1
drives
VID_OUT
Installed Uninstalled
PPI0
drives
VID_OUT
Installed Installed
PPI0
drives
VID_OUT
, and
VID_OUT
drives
PPI1
(loop-back mode)
Table 2-7. Setting Direction of PPI0_SYNC1 (JP6.1/3/5)
Jumper Location PPI0_SYNC1 Direction
JP6.1/3
Controlled by a flag pin
JP6.3/5
Input to the processor
Uninstalled Output from the processor