To add logical port to the interface, do the following:
- On the ports list, right-click and select Add
Port.Alternatively, you can click the Add button
on the toolbar. The following figure
shows the Add Port dialog
box.
- Enter the required information, as follows:
- Display Name
- The name of the logic port. In the AMD convention, these names are uppercase and are not prefixed with the name of the interface.
- Description
- Enter a human-readable description for the logical port. Any transaction signaling must be described.
- Default Value
- When the port is optional, IP integrator uses this default value to drive the in mode port when unconnected.
- In the Master and
Slave sections, set the
following:
- Width
- Required bit width of the mapped port for master/slave mode bus interfaces exposed on an IP. Values are: –1 (undefined width), 1(single bit signal), or a fixed value.
- Presence
- Set to either required or optional, indicating if the logical port is required to be mapped in master/slave mode bus interfaces exposed on an IP. Allowed values are: optional, required, and illegal.
- Direction
- Required port mode when mapped for master/slave mode bus interfaces exposed on an IP. Values are in, out, and inout.
Note: Often the slave and master widths are the same.Important: Typically the slave and master directions are opposite. If the directions are the same, IP integrator might not be able to properly directly connect the master and slave. - In the Type section, set the
following:
- Address
- Check this option when the logical port serves as an address line.
- Data
- Check this option when the logical port carries data and is not a control, addressing, or clock/reset.
- Clock
- Check this option when the logical port is a clock line.
- Reset
- Check this option when the logical port is a reset line.
- Click OK.