Reset Select Header (P4); Cop Disable Header (P5) - Motorola M68EM05A24 User Manual

2 2.1.1
2.1.2
MOTOROLA
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Reset Select Header (P4)

Jumper header P4 controls the path of a target reset. The diagram below
shows the factory configuration: the fabricated jumper between pins 1
and 2 enables your software to control resets. This is the only correct P4
configuration for an A24EM that is part of an MMDS05.
FABRICATED
JUMPER
The P4 pins 2 and 3 configuration is not correct for an
A24EM that is part of an MMDS05 system. Such a con-
figuration would interfere with correct operation of the
RESETIN and RESETOUT commands.

COP Disable Header (P5)

Jumper header P5 allows the user to enable/disable the internal COP
during software development. The diagram below shows the factory
configuration: the fabricated jumper between pins 1 and 2 enables the
internal COP. To disable it, remove the fabricated jumper between pins
1 and 2. The jumper setting is sampled once on power on or reset.
Changing the jumper setting after reset will have no effect on the inter-
nal COP.
COP DISABLE
FABRICATED
P5
JUMPER
TARGET RESET
DRIVEN FROM
1
EVS
2
TARGET
3
P4
NOTE
1
OPEN = COP OFF
CLOSE = COP ON
2
HC05A24EM USER'S MANUAL