Electronic digital logic circuitry – Multifunctional or programmable – Array
Reexamination Certificate
2007-09-04
2007-09-04
Chang, Daniel (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Array
C326S046000, C714S726000
Reexamination Certificate
active
11098713
ABSTRACT:
A first programmable device comprises non-dedicated, programmable resources including programmable logic; dedicated circuitry; a Joint Test Action Group (JTAG) interface adapted to selectively interchange signals with the programmable logic via the dedicated circuitry; and a Serial Peripheral Interface (SPI) interface adapted to (1) selectively interchange signals with the programmable logic via the dedicated circuitry and (2) selectively interchange signals with the JTAG interface via the dedicated circuitry. The JTAG interface is adapted to be connected to a first external device. The SPI interface is adapted to be connected to a second external device. The first programmable device is adapted to transfer signals from the first external device to the second external device via the JTAG interface, the dedicated circuitry, and the SPI interface without relying on any of the programmable resources.
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Kow San-Ta
Singh Satwant
Tang Howard
Chang Daniel
Drucker Kevin M.
Lattice Semiconductor Corporation
Mendelsohn Steve
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