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HC05L1EM USER’S MANUAL
MOTOROLA
2-1
2
CHAPTER 2
MMDS05 CONFIGURATION AND OPERATION
This chapter explains how to configure and use your L1EM as part of an
MMDS05. For other parts of system installation or configuration, see
the MMDS05 operations manual (MMDS05OM/D). (If you will use
your L1EM as part of an HC05EVS system, go to Chapter 3 for corre-
sponding information.)
Paragraph 2.1 explains how to set L1EM jumper headers. Paragraph 2.2
explains how to install personality and help files pertaining to the
L1EM. Paragraph 2.3 lists limitations on using the L1EM in an
MMDS05. Paragraph 2.4 explains remaining system installation.
Note that you can configure an L1EM already installed in the MMDS05
station module enclosure. To do so, switch off station-module power,
remove the hatch, then follow the guidance of this chapter.
CAUTION
Be sure to switch off power if you reconfigure an
installed EM. Reconfiguring EM jumper headers with
power left on can damage MMDS05 circuits.
2.1
SETTING L1EM JUMPER HEADERS
Your L1EM has three jumper headers, P4, P5 and P6. Paragraphs
2.1.1.through 2.1.3 explain how to configure these headers.
2.1.1
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 L1EM that is part of an MMDS05.
1
2
3
P4
TARGET
FABRICATED
JUMPER
TARGET RESET
DRIVEN FROM
EVS