Specifications

Bussing 41
 Press the key. The breakout pin and the attached signal will be
renamed as entered.
IMPORTANT: The notation on the breakout pin is always the same as the name of the attached
signal. Changing the breakout pin renames the attached signal and will detach it
from any like–named signals already in the bus.
Changing Bus Pin Connections
When a bus is connected to a bus pin on a device or subcircuit block, the
bus internal pins will by default connect to signals with the same name in
the bus. To change these default connections, use the Bus Pin Info com-
mand in the pin pop–up menu.
 See Chapter 12, Menu Reference, for more information.
Bus Pins
LogicWorks supports user–created bus pins on devices. A bus pin can be
defined to have any collection of named internal pins. Note the following
properties of bus pins:
 The bus pin itself does not represent a physical device pin. It is only a
graphical place–holder on the schematic representing a group of
internal pins. The bus pin itself never appears in a netlist.
 The internal pins represent physical device pins. Even though they do
not appear on the schematic, they can have all the same parameters as
normal devices pins, including pin numbers and attributes. These
parameters can be accessed using the Bus Pin Info command in the pin
pop–up menu.
 When a device with a bus pin is placed, it has a pre–created bus
attached to it by default. This bus will contain one signal for each
internal pin, with the initial name of the signal being the same as the
name as the pin’s name.
 A “splicing” box can be displayed using the Bus Pin Info command in
the pin pop–up menu. This box allows any internal pin to be connected
to any signal in the attached bus.
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