Select From The Available Options; Available Boards; Mc145Xxx Commands; Initialization/System Setup Commands - Motorola MC145220EVK Manual

'Select from the available options'

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This is the main screen of the program. This is where the user enters commands to demonstrate the
capabilities of the various boards connected to the computer. The title of the screen is 'Select from the
available options'.
This screen is broken down into three sections:

'Available Boards'

This section displays the board types that are connected to the computer. It also designates which
board is the currently selected 'target' board. This is the board that will receive the commands from
'MC145xxx Commands' section. This section also provides the ability to change the targeted
board. Type the target board command ([A], [B], or [C]) to target that particular board.

'MC145xxx Commands'

This section is further divided into three subsections. Each subsection contains commands that can
be sent to the 'target' board to demonstrate its capabilities. Each of these commands is described in
full in the Command Summary.
The first subsection, 'MC145xxx Frequency Commands', contains commands that are
used to modify the PLL frequency in some way. These commands are available for all pos-
sible target board types.
In the top line of this section, 'Current Output Frequency is 70 MHz' designates what the
frequency is for the currently targeted board. This value is dynamic.
On the lines below this, 60 MHz is the current setting for the default low frequency.
70 MHz is the current setting for the default medium frequency. 80 MHz is the current setting
for the default high frequency.
The second subsection, 'MC145xxx Additional Commands', contains commands that
are used to further modify the currently targeted board. These commands also work with all
of the MC145xxx board types.
The third subsection, 'MC145220 EVK – Single Specific Commands', are only dis-
played when the MC145220EVK in single loop mode is the currently targeted board. This
section shows commands that are specific to this board. This is required since this board
contains the equivalent of two PLLs.
The command letter for 'Set target PLL on board' is [T]!. In single loop mode, the user may
toggle between PLL and PLL on the MC145220EVK by using this command. Feedback is
given to the user as to whether PLL or PLL will be accessed. See near the top of the screen
on the line titled "Available Boards - Current target board is: ..."

'Initialization/System Setup Commands'

This section contains commands that are used to initialize all boards connected to the computer or
to set up the computer.
MC145220EVK
20
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