Quartus® Prime Pro Edition User Guide: Platform Designer

ID 683609
Date 4/17/2025
Public
Document Table of Contents

6.12.5.2. Partial Connectivity Type

If you do not select Full Connectivity, you must specify the connectivity between the transmitter and receiver interfaces during IP parameterization. You specify this connectively by entering data in the the Connectivity Matrix tab. The IP uses the connectivity matrix to configure the crossbar. The following examples illustrate the types of connectivity that you can achieve with the Partial Connectivity type.

The following partial connectivity types are supported:

  • For cases where the number of transmitter interfaces is less than four, and the number of receiver interfaces is less than 4:
    • Interconnect uses only the basic 4x4 crossbar unit for implementation.
    • TDEST width is 2 bits.
  • In all other cases, interconnect uses full 16x16 crossbar.
Figure 292. Example of Connectivity Matrix Tab in IP Parameter Editor


Note: If you make point-to-point connections with Partial Connectivity enabled, a warning message displays in Platform Designer indicating that point-to-point connections can be made only using Point-to-Point or Fixed Routing connectivity.
Table 203.  Example Point-to-Point Connection Solution
Point-to-Point Example System Solution
  • Five transmitter interfaces.
  • Five receiver interfaces.
  • transmitter0 connected only to receiver0.
  • transmitter1 connected only to receiver1.
  • Transmitters 2, 3, 4 and receivers 2, 3, 4 have a varied connectivity between them.
A warning message indicates that you can use point-to-point mode or the fixed routing option for point-to-point connections. The full connected crossbar is inserted for the system.
Figure 293. Point-to-Point Connection Warning