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US 7,888,991 B2Granted
Clock distribution network
AssigneeMicron Technology, Inc.
InventorFeng Lin
Life of this patent
Estimating the term…
Abstract
Some embodiments include apparatus and methods having a clock path with a combination of current-mode logic (CML) based and complementary metal-oxide semiconductor (CMOS) components.
Claims13
An apparatus comprising:
- a bias generator configured to generate a bias voltage based on a function of a resistor and an adjustable current, the adjustable current generated based on a band gap reference generator, wherein the bias generator includes a current source to receive a code to adjust a value of the adjustable current, and, wherein the bias generator includes a controller to set a value of the code based on a relationship between a value of a first voltage generated based on the band gap reference generator and a value of a second voltage generated based on the band gap reference generator, and the value of the bias voltage corresponds to the value of the second voltage;
- and
- a clock path including a current-mode logic divider circuit configured to generate differential clock signals, the current-mode logic divider circuit including at least one transistor having a gate responsive to the bias voltage.
An apparatus comprising:
- a bias generator configured to generate a bias voltage based on a function of a resistor and an adjustable current, the adjustable current generated based on a band gap reference generator;
- and
- a clock path including a current-mode logic divider circuit configured to generate differential clock signals, the current-mode logic divider circuit including at least one transistor having a gate responsive to the bias voltage, wherein the clock path further includes:
- a converter configured to convert the differential clock signals into single-ended clock signals;
- and
- complementary-metal-oxide semiconductor (CMOS) inverters to provide the single-ended clock signals to multiple clock trees of the clock path.
3 more elements
An apparatus comprising:
- a bias generator configured to generate a bias voltage based on a function of a resistor and an adjustable current, the adjustable current generated based on a band gap reference generator;
- and
- a clock path including a current-mode logic divider circuit configured to generate differential clock signals, the current-mode logic divider circuit including at least one transistor having a gate responsive to the bias voltage, wherein the clock path further includes:
- current-mode logic buffers to provide the differential clock signals to multiple clock trees of the clock path;
- and
- a converter configured to convert the differential clock signals into single-ended clock signals after the differential clock signals are provided by the current-mode logic buffers.
3 more elements
An apparatus comprising:
- a bias generator configured to generate a bias voltage based on a function of a resistor and an adjustable current, the adjustable current generated based on a band gap reference generator;
- and
- a clock path including a current-mode logic divider circuit configured to generate differential clock signals, the current-mode logic divider circuit including at least one transistor having a gate responsive to the bias voltage, wherein the clock path includes:
- a first receiver to receive a first differential clock signal that is used to generate the differential clock signals;
- at least one current-mode logic buffer to provide the first differential clock signal to capture data;
- and
- complementary-metal-oxide semiconductor (CMOS) inverters to generate clock signals to deserialize data.
4 more elements
A method comprising:
- receiving a first differential clock signal;
- generating second differential clock signals based on the first differential clock signal;
- generating a bias voltage based on a relationship between a first voltage generated based on a band gap reference generator and a second voltage generated based on the band gap reference generator;
- and
- using the bias voltage to control a gate of a transistor of at least one current-mode logic component that generates the second differential clock signals.
2 more elements
Dependencies are inferred from the claim text.