Operation Fundamentals
System Initialization
MMDS0508OM/D
MOTOROLA
Operation Fundamentals
61
Setting
Communications
Baud Rate
For best system performance, communications between the host and
the station module should be at the maximum available baud rate. At
power-up, the MMDS system automatically negotiates the maximum
baud for the system. All data transfers between the host computer and
the station module are at the specified baud rate; maximum performance
is at the highest rate the computer supports. Use the BAUDCHK
command to determine and set that rate. However, if the software
displays communications error messages, reduce the baud rate.
Use the BAUD command to change the baud rate. The possible rates
are 2400, 4800, 19200, 38400, and 57600 baud. If the BAUD command
is entered with no rate value, the baud window appears over the debug
screen. To select a rate from this window, use the arrow keys to highlight
the rate, then press <CR> or double click the mouse when the cursor is
on the desired baud rate.
Standard Memory
Mapping
Various MCU designs require different memory map configurations of
the MMDS system. The appropriate memory map is specified in a
personality file for each MCU that the EM supports. These files are
shipped with the separately purchased EMs. Refer to the appropriate
EM user’s manual to determine the personality files used by a particular
EM module. Personality files are usually installed in the directory from
which the MMDS software is executed. If a personality file is not located
in that directory, the software displays a search window used to find the
correct file.
The MMDS operating software automatically loads the default
personality file that corresponds to the EM module currently connected.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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