Electronic digital logic circuitry – Multifunctional or programmable – Having details of setting or programming of interconnections...
Reexamination Certificate
2007-03-27
2007-03-27
Le, Don (Department: 2819)
Electronic digital logic circuitry
Multifunctional or programmable
Having details of setting or programming of interconnections...
C326S041000, C326S082000
Reexamination Certificate
active
10977332
ABSTRACT:
Techniques are provided for increasing flexibility to I/O banks with respect to supply voltages. Multiple supply voltages can be provided to a bank of I/O pins. Separate I/O pins residing in an I/O bank are driven by buffers that are coupled to different supply voltages. Dedicated I/O pins are driven by buffers with pre-selected supply voltages. The dedicated I/O pins can be grouped together into the same I/O bank providing greater flexibility to drive signals on I/O pins in other I/O banks at different voltages. Also, a dual mode input buffer can drive an input signal to a voltage determined by one of two possible supply voltage levels. In addition, power on reset circuits for an I/O bank can monitor the voltage of two or more supply voltages.
REFERENCES:
patent: 6246258 (2001-06-01), Lesea
patent: 6271679 (2001-08-01), McClintock et al.
patent: 6377069 (2002-04-01), Veenstra et al.
patent: 6480026 (2002-11-01), Andrews et al.
patent: 6864710 (2005-03-01), Lacey et al.
Johnson Brian
Lee Andy
McClintock Cameron
Nguyen Toan
Tran Stephanie
Altera Corporation
Le Don
Townsend and Townsend / and Crew LLP
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