Slide 32 of 93
Notes:
The mode indicates the direction of the flow of data across that port. This flow of data is defined with respect to the component.
The five port modes available:
1. IN -- indicates that the (only) signal driver is outside this component
2. OUT -- indicates that the (only) signal driver is within this component. Note that until 1076-1993, a component could not read its own OUT ports.
3. BUFFER -- indicates that there may signal drivers inside and outside this component. However, only one of these drivers can be driving the signal at any one time.
4. INOUT -- indicates that there may be signal drivers inside and outside this component. Any number of these drivers can be driving the signal simultaneously, but a Bus Resolution Function is then required to determine what values the signal will assume.
5. LINKAGE -- indicates that the location of the signal drivers is not known. This mode type only indicates that a connection exists.
