Integrated circuit and a method for designing a boundary scan super-cell
View Patent ↗A method for designing an integrated circuit, the method includes: providing an initial definition of a boundary scan register that includes identical super-cells adapted to be connected to multiple pin types; and determining the configuration of each super-cell by providing at least one pin type indication signal to each super-cell. An integrated circuit that includes a boundary scan super-cell, the boundary scan super-cell includes first circuitry adapted to be connected to at least one type of integrated circuit pin; characterized by further including a second circuitry, connected to first circuitry, wherein the second circuitry is adapted to receive at least one pin type indication signal and in response allows the boundary scan super-cell to be connected to at least one additional type of an integrated circuit pin.
1. An integrated circuit that comprises a boundary scan super-cell, the boundary scan super-cell comprises:
a first circuitry adapted to be coupled to at least one type of integrated circuit pin;
a second circuitry, coupled to the first circuitry, wherein the second circuitry is adapted to receive at least one pin type indication signal and in response allows the boundary scan super-cell to be coupled to at least one additional type of an integrated circuit pin, wherein the second circuitry comprises:
an input multiplexer;
XOR gate;
two AND gates; and
an OR gate, wherein an AND gate and the OR gate comprises an inverting input and a non-inverting input.
2. The integrated circuit according to claim 1 , wherein an additional type of an integrated circuit pin is an open drain output pin.
3. The integrated circuit according to claim 1 , wherein an additional type of integrated circuit pin is an open drain bi-directional pin.
4. The integrated circuit according to claim 1 , wherein an additional type of an integrated circuit pin is an input pin.
5. The integrated circuit according to claim 1 , wherein an additional type of an integrated circuit pin is a two state buffer pin.
6. The integrated circuit according to claim 1 , comprising a boundary scan register that comprises identical boundary scan super-cells.
7. The integrated circuit according to claim 1 , wherein an additional type of an integrated circuit pin is an open drain output pin.
8. An integrated circuit that comprises a boundary scan super-cell, the boundary scan super-cell comprises:
a first circuitry adapted to be coupled to at least one type of integrated circuit pin;
a second circuitry, coupled to the first circuitry, wherein the second circuitry is adapted to receive at least one pin type indication signal and in response allows the boundary scan super-cell to be coupled to at least one additional type of an integrated circuit pin, wherein the first circuitry comprises a second type boundary scan cell and a seventh type boundary scan cell, wherein the second circuitry comprises:
an input multiplexer;
XOR gate;
two AND gates; and
an OR gate, wherein an AND gate and the OR gate comprises an inverting input and a non-inverting input.
9. The integrated circuit according to claim 8 , wherein an additional type of an integrated circuit pin is an open drain output pin.
10. The integrated circuit according to claim 8 , wherein an additional type of integrated circuit pin is an open drain bi-directional pin.
11. The integrated circuit according to claim 8 , wherein an additional type of an integrated circuit pin is an input pin.
12. The integrated circuit according to claim 8 , wherein an additional type of an integrated circuit pin is a two state buffer pin.
13. The integrated circuit according to claim 8 , comprising a boundary scan register that comprises identical boundary scan super-cells.