For conditioning the input to or the output from an integrated circuit

Claim 2

A programmable input/output circuit connected to an input terminal or an output terminal of an integrated circuit, comprising: input terminal means for connecting the input terminal of an integrated circuit to the programmable input/output circuit or for connecting the integrated circuit to the programmable input/output circuit; at least one storage element; at least one combinational logic circuit; output terminal means for connecting the programmable input/output circuit to the integrated circuit or for connecting the programmable input/output circuit to the output terminal of the integrated circuit; and at least one programmable selector; wherein: two or more signal lines from a plurality of signal lines including at least a signal line from said input terminal means, an output signal line from said storage element and an output signal line from said combinational logic circuit are connected to input terminals of said selector; and an output selected by said selector is directly connected to any one of output or input terminals including at least an input terminal of said storage element, an input terminal of said combinational logic circuit and said output terminal means.

Claim 3

The programmable input/output circuit as set forth in claim 1, further comprising a storage element input selector means wherein said storage element input selector means selects one signal line from said plurality of signal lines including a signal line of said input terminal and an output signal line of said storage element and wherein the output of said storage element input selector means is connected to an input signal line of said storage element.

Claim 4

The programmable input/output circuit as set forth in claim 1, further comprising a clock selector means wherein said clock selector means selects one clock signal line from a plurality of clock signal lines and wherein the output of said clock selector means is connected to an input signal line of said storage element.

Claim 5

The programmable input/output circuit as set forth in claim 1, further comprising first and second selector means wherein said first selector means selects one signal line from said plurality of signal lines including an output signal line from said storage element and an output signal from said second selector means.

Claim 6

The programmable input/output circuit as set forth in claims 1, further comprising a storage element output selector means wherein said said storage element output selector means selects one signal line from a plurality of output signal lines from said storage element and wherein the output of said storage element selector means is connected to an input signal line of said combinational logic circuit.

Claim 7

The programmable input/output circuit as set forth in claim 1, further comprising a circuit output selector means wherein said circuit output selector means selects one signal line from said plurality of signal lines including a signal line of said input terminal means, an output signal line of said storage element and an output signal line of said combinational logic circuit and wherein an output signal line of said circuit output selector means is connected to the terminal output means.

Claim 8

A programmable input/output circuit connected to an input terminal or an output terminal of an integrated circuit, including: input terminal means for connecting the input terminal of the integrated circuit to the programmable input/output circuit or for connecting the integrated circuit to the programmable input/output circuit; at least one storage element; output terminal means for connecting the programmable input/output circuit to the integrated circuit or for connecting the programmable input/output circuit to the output terminal of the integrated circuit; at least one programmable selector; and at least one dynamic selector circuit; wherein: said dynamic selector circuit connects a signal line selected from a plurality of signal lines including at least an output signal line from a first another input/output circuit and a signal line from said input terminal means to an input terminal of said storage element; and an output signal line from said storage element can be connected to a second another input/output circuit.

Claim 9

A programmable input/output circuit connected to an input terminal or an output terminal of an integrated circuit, including: input terminal means for connecting the input terminal of the integrated circuit to the programmable input/output circuit or for connecting the integrated circuit to the programmable input/output circuit; at least one storage element; output terminal means for connecting the programmable input/output circuit to the integrated circuit or for connecting the programmable input/output circuit to the output terminal of the integrated circuit; at least one programmable selector; and at least one dynamic selector circuit; wherein: said dynamic selector circuit connects a signal line selected from a plurality of signal lines including at least an output signal line from a first another input/output circuit and a signal line from said input terminal means to an input terminal of said storage element; and an output signal line from said storage element can be connected to a second another input/output circuit.

Claim 10

The programmable input/output circuit as set forth in claim 7, wherein said dynamic selector circuit connects a selected signal line to the input signal line of a storage element.

Claim 11

The programmable input/output circuit as set forth in claim 7, wherein said dynamic selector circuit connects a selected signal line to the input signal line of said selector.

Claim 12

A programmable input/output circuit connected to an input terminal or an output terminal of an integrated circuit, comprising: input terminal means having a signal line for connecting the input terminal of an integrated circuit to the programmable input/output circuit or for connecting the integrated circuit to the programmable input/output circuit; at least one storage element; at least one combinational logic circuit; output terminal means having a signal line for connecting the programmable input/output circuit to the integrated circuit or for connecting the programmable input/output circuit to the output terminal of the integrated circuit; and at least one programmable selector; wherein: two or more signal lines from a plurality of signal lines including at least a signal line from said input terminal means, an output signal line from said storage element and an output signal line from said combinational logic circuit are connected to input terminals of said selector; and an output selected by said selector is connected to any one of output or input terminals including at least an input terminal of said storage element, an input terminal of said combinational logic circuit and said output terminal means.

Claim 13

A programmable input/output circuit connected to an input terminal or an output terminal of an integrated circuit, comprising: input terminal means having a signal line for connecting the input terminal of an integrated circuit to the programmable input/output circuit or for connecting the integrated circuit to the programmable input/output circuit; at least one storage element; at least one combinational logic circuit; output terminal means having a signal line for connecting the programmable input/output circuit to the integrated circuit or for connecting the programmable input/output circuit to the output terminal of the integrated circuit; and at least one programmable selector; wherein: two or more signal lines from a plurality of signal lines including at least a signal line from said input terminal means, an output signal line from said storage element and an output signal line from said combinational logic circuit are connected to input terminals of said selector; and an output selected by said selector is connected to any one of output or input terminals including at least an input terminal of said storage element, an input terminal of said combinational logic circuit and said output terminal means.

Claim 14

The programmable input/output circuit as set forth in claim 10, further comprising a storage element input selector means wherein said storage element input selector means selects one signal line from said plurality of signal lines including a signal line of said input terminal and an output signal line of said storage element and wherein the output of said storage element input selector means is connected to an input signal line of said storage element.

Claim 15

The programmable input/output circuit as set forth in claim 10, further comprising a clock selector means wherein said clock selector means selects one clock signal line from a plurality of clock signal lines and wherein the output of said clock selector means is connected to an input signal line of said storage element.

Claim 16

The programmable input/output circuit as set forth in claim 10, further comprising first and second selector means wherein said first selector means selects one signal line from said plurality of signal lines including an output signal line from said storage element and an output signal from said second selector means.

Claim 17

The programmable input/output circuit as set forth in claims 10, further comprising a storage element output selector means wherein said said storage element output selector means selects one signal line from a plurality of output signal lines from said storage element and wherein the output of said storage element selector means is connected to an input signal line of said combinational logic circuit.

Claim 18

The programmable input/output circuit as set forth in claim 10, further comprising a circuit output selector means wherein said circuit output selector means selects one signal line from said plurality of signal lines including a signal line of said input terminal means, an output signal line of said storage element and an output signal line of said combinational logic circuit and wherein an output signal line of said circuit output selector means is connected to the terminal output means.