Block mapping circuit and method for memory device
View Patent ↗A method of mapping logical block select signals to physical blocks can include receiving at least one signal for each of n+1 logical blocks, where n is an integer greater than one, that each map to one of m+1 physical blocks, where n<m. The method also includes mapping the at least one signal for each logical block to physical block from a corresponding a set of r+1 physical blocks, each set of r+1 physical blocks being different from one another.
1. An integrated circuit device, comprising:
a cross bar mapping circuit comprising,
at least n+1 input signal line sets,
at least m+1 output signal lines sets, where m>n>0, and
a different group of r+1 switching elements coupled to each input signal line set, each of the r+1 switching elements selectively connecting the input signal line set to one of the output signal line sets; where r=m−n.
2. The integrated circuit device of claim 1 , wherein:
each group of switching elements is shifted with respect to an adjacent group of switching elements in one direction, with
a first group of r+1 switching elements selectively connecting a first input signal line set to an output signal line set selected from first through r+1th output signal line sets,
a second group of r+1 switching elements selectively connecting a second input signal line set to an output signal line set selected from second through r+2th output signal line sets, and
an (n+1)th group of r+1 switching elements selectively connecting an (n+1)th signal line set to an output signal line set selected from [(m+1)−r]th to (m+1)th output signal line sets.
3. The integrated circuit device of claim 1 , wherein:
each input signal line set and output signal line set comprises a multiple signal line bus.
4. The integrated circuit of claim 1 , wherein:
the cross bar mapping circuit includes a plurality of partitions, with each partition being coupled to less than n+1 input signal line sets and less than m+1 output signal line sets.
5. The integrated circuit of claim 1 , wherein:
each switching element comprises a passgate circuit comprising at least one transistor having a source/drain connected to an input signal line and another source/drain connected to an output signal line.
6. The integrated circuit of claim 5 , wherein:
each passgate circuit comprises complementary transistors having source/drain paths arranged in parallel with one another between the input signal line and output signal line.
7. The integrated circuit of claim 5 , wherein:
each passgate circuit comprises a logic gate having a first input coupled to a corresponding input signal line, a second input coupled to receive a state value, and an output coupled to a corresponding output signal line.
8. The integrated circuit of claim 5 , wherein:
each passgate circuit is coupled to a corresponding output signal line by at least one logical OR gate.
9. The integrated circuit of claim 1 , wherein:
the cross bar mapping circuit includes a plurality of partitions, with each partition being coupled to a different group of input signal line sets.
10. A semiconductor device, comprising:
a cross bar mapping circuit comprising
n+1 input signal line sets;
m+1 output signal line sets, where m>n>3; and
less than (n+1)*(m+1) switching elements, each switching element selectively connecting one input signal line set to a different output signal line set.
11. The semiconductor device of claim 10 , wherein:
m−n=r, and
the number of switching elements is (n+1)*(r+1).
12. The semiconductor device of claim 11 , further including:
a register coupled to the switching elements that provides at least (n+1)*(r+1) switching values.
13. The semiconductor device of claim 11 , further including:
a register coupled to the switching elements that provides at least log 2 [(n+1)*(r+1)] undecoded values; and
a decoder coupled to the register that generates at least (n+1)*(r+1) switching values from the undecoded values.
14. The semiconductor device of claim 10 , further including:
each switching element comprises a passgate circuit comprising at least one transistor having a source/drain connected to an input signal line and another source/drain connected to an output signal line.
15. The semiconductor device of claim 14 , wherein:
each passgate circuit comprises complementary transistors having source/drain paths arranged in parallel with one another between the input signal line and output signal line.
16. The semiconductor device of claim 10 , wherein:
each passgate circuit comprises a logic gate having a first input coupled to a corresponding input signal line, a second input coupled to receive a state value, and an output coupled to a corresponding output signal line.