Static information storage and retrieval – Read/write circuit – Multiplexing
Patent
1999-02-03
2000-08-08
Dinh, Son T.
Static information storage and retrieval
Read/write circuit
Multiplexing
36518908, 36523002, G11C 700
Patent
active
061011320
ABSTRACT:
A RAM block includes a circuit for causing the RAM to provide all 0's on the output when a Reset signal is active. The Reset signal does not change the RAM contents but causes all outputs of the block RAM to be 0. This is useful when the RAM block is configured as a state machine. Thus, in an FPGA or other programmable device, an application can start the state machine in a known state with all address bits equal to 0 and can reset the state machine to this startup state. When the reset signal is active, the state machine feeds back the state of 0 to the address inputs of the RAM block that receive state feedback data, regardless of the data actually in those locations.
REFERENCES:
patent: 5421000 (1995-05-01), Fortino et al.
patent: 5835406 (1998-11-01), Chevallier et al.
patent: 5844851 (1998-12-01), Pascusi et al.
patent: 5923594 (1999-07-01), Voshell
patent: 5923595 (1999-07-01), Kim
Bauer Trevor J.
Goetting F. Erich
Brown Scott R.
Dinh Son T.
Xilinx , Inc.
Young Edel M.
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