XC3000FM Datasheet, PDF (10/50 Pages) Xilinx, Inc – XC3000 Logic Cell Array Families

XC3000, XC3000A, XC3000L, XC3100, XC3100A Logic Cell Array Families
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Figure 8. XACT Development System Locations of interconnect access, CLB control inputs, logic inputs and outputs. The dot
pattern represents the available programmable interconnection points (PIPs).
Some of the interconnect PIPs are directional. This is indicated on the XACT design editor status line:
ND is a nondirectional interconnection.
D:H->V is a PIP that drives from a horizontal to a vertical line.
D:V->H is a PIP that drives from a vertical to a horizontal line.
D:C->T is a “T” PIP that drives from a cross of a T to the tail.
D:CW is a corner PIP that drives in the clockwise direction.
P0 indicates the PIP is non-conducting , P1 is on.
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