SOLUTION

• c/BE# signal is used to enable commands.
• CIBE# command will indicate that a read operation is requested and that the memory address space is being used.
• CIBE# bus command and byte enable signals are multiplexed on these lines.
• During the address phase of a PCI transaction, these signals carry a bus command that defines the type of transfer to be performed.
• During the data phase, these signals carry byte enable information.