Chip module, communication system, and port allocation method

A communication system, comprising:

• a first chip module and a second chip module, wherein the first chip module comprises:
• a plurality of first ports, wherein at least some of the plurality of first ports are first selection ports that can be configured as a read port or a write port, and
• a first control module configured to obtain a required quantity of write ports and a required quantity of read ports, and compare the required quantity of write ports and the required quantity of read ports with a current quantity of write ports and a current quantity read ports, to determine least one first selection port that needs to be switched;
• wherein the first ports of the first chip module and a plurality of second ports of the second chip module are connected in a one-to-one correspondence.

A port allocation method, comprising:

• obtaining a required quantity of write ports and a required quantity of read ports;
• and
• comparing the required quantity of write ports and the required quantity of read ports with a current quantity of write ports and a current quantity of read ports, to determine whether at least one first selection port needs to be switched;
• and
• switching the at least one first selection port of a chip module to a read port or a write port.