High speed digital signal termination circuit
AssigneeInphi Corporation
InventorsAndrew Burstein, Carl Pobanz, Paul Murtagh, Zabih Toosky
Life of this patent
Estimating the term…
Abstract
A clock driver integrated circuit device and method is provided. The device can include a VTT regulator provided on a single integrated circuit (IC) chip. A first termination at an internal VDD/2 can be coupled to the VTT regulator. A VTT bus can be coupled to the first termination. A plurality of command control inputs can be coupled to the VTT bus. The plurality of command inputs can include A, BA, RAS, CAS, WE, CS, CKE, ODT, PARIN, and the like. A VDD termination can be coupled to a first end of the VTT bus and a ground can be coupled to a second end of the VTT bus. The method can include regulating or removing signal noise from a host controller via the clock driver IC device.
Claims20
A clock driver integrated circuit (IC) device comprising:
- a single integrated circuit (IC) chip;
- a VTT bus provided on the single IC chip;
- a plurality of command control inputs coupled to the VTT bus;
- a first termination module provided on the single IC chip, the first termination module being coupled to the VTT bus and an internal VDD/2;
- a second termination module provided on the single IC chip, the second termination module being coupled to the VTT bus and the first termination module;
- and
- a third termination module provided on the single IC chip, the third termination module being coupled to the VTT bus and configured to provide a feedforward function for each of the plurality of command control inputs.
A method for removing noise from signals associated with a clock driver integrated circuit (IC) device, the method comprising:
- providing a clock driver IC device comprising a VTT regulator coupled to a VTT bus, a plurality of termination resistors, and a plurality of command control inputs, the VTT regulator further comprising a first termination module, wherein the plurality of termination resistors, the plurality of command control inputs, and the first termination module are coupled to the VTT bus;
- receiving a plurality of command control signals at the command control inputs, each of the plurality of command control inputs being associated with one of the plurality of termination resistors, the plurality of termination resistors being configured to prevent current bleeding;
- and
- regulating the plurality of command control signals on the VTT bus via the first termination module provided in the VTT regulator, the first termination module comprising an operational amplifier configured in a unity voltage gain feedback mode.
Dependencies are inferred from the claim text.