Methods and systems for routing in a state machine
A device includes a routing buffer. The routing buffer includes a first port configured to receive a signal relating to an analysis of at least a portion of a data stream. The routing buffer also includes a second port configured to selectively provide the signal to a first routing line of a block of a state machine at a first time. The routing buffer further includes a third port configured to selectively provide the signal to a second routing line of the block of the state machine at the first time.
1. A device, comprising:
a routing buffer comprising:
a first port configured to receive a signal relating to an analysis of at least a portion of a data stream;
a second port configured to selectively provide the signal to a first routing line of a block of a state machine at a first time; and
a third port configured to selectively provide the signal to a second routing line of the block of the state machine at the first time.
2. The device of claim 1 , wherein the routing buffer comprises a bi-directional drive element coupled between the first port and the second port.
3. The device of claim 2 , wherein the routing buffer comprises a first control input configured to activate the bi-directional drive element to provide the signal from the second port.
4. The device of claim 1 , wherein the routing buffer comprises a uni-directional drive element coupled between the first port and the third port.
5. The device of claim 4 , wherein the routing buffer comprises a second control input configured to activate the uni-directional drive element to provide the signal from the third port.
6. The device of claim 1 , wherein the signal comprises a first signal and wherein the routing buffer further comprises a fourth port configured to selectively provide a second signal relating to an analysis of at least a portion of the data stream received at the second port at a second time, wherein the first port is configured to selectively provide the second signal at the second time.
7. The device of claim 6 , wherein the routing buffer comprises a third control input configured to activate a bi-directional drive element to provide the second signal from the first port.
8. The device of claim 7 , wherein the routing buffer comprises a uni-directional drive element coupled between the second port and the fourth port.
9. The device of claim 8 , wherein the routing buffer comprises a fourth control input configured to activate the uni-directional drive element to provide the second signal from the fourth port.
10. A device, comprising:
a state machine comprising:
a plurality of blocks, each of the blocks comprising:
a plurality of rows, each of the rows comprising a plurality of programmable elements, each of the programmable elements configured to analyze at least a portion of a data stream and to selectively output the result of the analysis; and
an intra-block switch configured to selectively route the result; and
a routing buffer coupled to one of the blocks and configured to:
receive the result from the intra-block switch at a first port; and
selectively provide the result from a second port and a third port of the routing buffer simultaneously.
11. The device of claim 10 , wherein the intra-block switch comprises a plurality of row routing lines configured to be selectively coupled to the programmable elements and configured to provide the results from the programmable elements.
12. The device of claim 11 , wherein the intra-block switch comprises a plurality of block routing lines configured to be selectively coupled to the plurality of row routing lines.
13. The device of claim 12 , wherein the intra-block switch comprises a plurality of junction points configured to selectively couple the block routing lines to the plurality of row routing lines.
14. The device of claim 10 , wherein the routing buffer comprises a bi-directional drive element coupled between the first port and the second port.
15. The device of claim 14 , wherein the routing buffer comprises a control input configured to activate the bi-directional drive element to provide the result from the second port.
16. The device of claim 10 , wherein the routing buffer comprises a uni-directional drive element coupled between the first port and the third port.
17. The device of claim 16 , wherein the routing buffer comprises a control input configured to activate the uni-directional drive element to provide the first signal from the third port.
18. A method, comprising: receiving at a first port of a routing buffer a signal relating to an analysis of at least a portion of a data stream; providing from a second port of the routing buffer the signal to a first block routing line of a block of a state machine at a first time; and providing from a third port of the routing buffer the signal to a second block routing line of the block of the state machine at the first time.
19. The method of claim 18 , comprising receiving at an intra-block switch of the block of the state machine the signal from both the first block routing line and the second block routing line.
20. The method of claim 19 , comprising: providing the signal from the first block routing line to a first row routing line in the intra-block switch; and providing the signal from the second block routing line to a second row routing line in the intra-block switch.
21. The method of claim 20 , comprising: providing the signal from the first row routing line to a first programmable element; and providing the signal from the second row routing line to a second programmable element.
22. The method of claim 21 , comprising: activating the first programmable element responsive to the signal; and activating the second programmable element responsive to the signal.