CONTROL OF SKEW BETWEEN MULTIPLE DATA LANES
    1.
    发明公开

    公开(公告)号:US20240039545A1

    公开(公告)日:2024-02-01

    申请号:US18348899

    申请日:2023-07-07

    CPC classification number: H03L7/195 H03L7/199 H03K3/356026

    Abstract: Provided are a method and apparatus for controlling a skew between multiple data lanes. In the method and apparatus, a first data lane control stage controls control outputting first data over a first data lane based on a first data lane clock and a second data lane control stage controls outputting second data over a second data lane based on a second data lane clock. In the method and apparatus, a first device is associated with a system clock and is configured to generate the first and second data for outputting over the first and second data lanes. A clock control stage causes the first and second data lane clocks to be offset from each other by a fixed time duration that is an integer fraction of a cycle duration of the system clock.

    FIRST ORDER MEMORY-LESS DYNAMIC ELEMENT MATCHING TECHNIQUE

    公开(公告)号:US20210343319A1

    公开(公告)日:2021-11-04

    申请号:US17374304

    申请日:2021-07-13

    Abstract: A quantizer generates a thermometer coded signal from an analog voltage signal. Data weighted averaging (DWA) of the thermometer coded signal is accomplished by controlling the operation of a crossbar switch controlled by a switch control signal to generate an output DWA signal. The output DWA signal is latched to generate a latched output DWA signal which is processed along with bits of the thermometer coded input signal in feedback loop to generate the switch control signal. The latching of the output DWA signal is performed in an input register of a digital-to-analog converter which operates to convert the latched output DWA signal to a feedback analog voltage from which the analog voltage signal is generated. The switch control signal specifies a bit location for a beginning logic transition of the output DWA signal cycle based on detection of an ending logic transition of the latched DWA signal.

    LOW LATENCY RESET SYNCHRONIZER CIRCUIT
    3.
    发明公开

    公开(公告)号:US20240364347A1

    公开(公告)日:2024-10-31

    申请号:US18623331

    申请日:2024-04-01

    CPC classification number: H03L7/00 H03K3/037 H03K5/1534 H03K19/20

    Abstract: A first latching circuit has a reset function controlled by a reset signal and configured to latch a logic state in response to a first edge of a clock signal to generate a first output signal. A second latching circuit has a reset function controlled by that reset signal and configured to latch a logic state in response to a second edge of that clock signal to generate a second output signal. The first and second edges are opposite edges. A combinatorial logic circuit logically combines the first and second output signals to generate a logic output signal. A third latching circuit has a reset function controlled by that reset signal and configured to latch the logic output signal in response to the second edge of that clock signal to generate a reset synchronization control signal.

    METHOD AND ARCHITECTURE FOR SERIAL LINK CHARACTERIZATION BY ARBITRARY SIZE PATTERN GENERATOR

    公开(公告)号:US20220188203A1

    公开(公告)日:2022-06-16

    申请号:US17682167

    申请日:2022-02-28

    Abstract: A serial-connection is tested by transmitting a PRBS generated using a kth-order monic-polynomial from transmission-circuitry to reception-circuitry, and determining operation is proper based upon the PRBS received. The PRBS is formed by generating x intermediate-words of the PRBS, x being a result of an integer-divide between a total number of bits in the PRBS and a bit-width of a serializer that transmits the PRBS, generating a leading-word of the PRBS as having first y-bits of the PRBS as its LSBs, y being based upon a modulo-divide between the total number of bits in the PRBS and x, and generating a trailing-word of the PRBS as having last z-bits of the PRBS as its MSBs, z being based upon a difference between a result of the modulo-divide and y. The PRBS is transmitted sequentially as the leading-word of the PRBS, the intermediate-words of the PRBS, and the trailing-word of the PRBS.

    HIGH SPEED DATA WEIGHTED AVERAGING (DWA) TO BINARY CONVERTER CIRCUIT

    公开(公告)号:US20220069837A1

    公开(公告)日:2022-03-03

    申请号:US17374351

    申请日:2021-07-13

    Abstract: A latch circuit sequentially latches a first data weighted averaging (DWA) data word and then a second DWA data word. A first detector circuit identifies a first bit location in the first DWA data that is associated with an ending of a first string of logic 1 bits in the first DWA data word. A second detector circuit identifies a second bit location in the second DWA data word associated with an ending of a second string of logic 1 bits in the second DWA data word. A DWA-to-binary conversion circuit converts the second DWA data word to a binary word by using the first bit location and second bit location to identify a number of logic 1 bits present in said second DWA data word. A binary value for that binary word that is equal to the identified number is output.

    HIGH THROUGHPUT PARALLEL ARCHITECTURE FOR RECURSIVE SINUSOID SYNTHESIZER

    公开(公告)号:US20210081174A1

    公开(公告)日:2021-03-18

    申请号:US16988912

    申请日:2020-08-10

    Abstract: A first multiplier multiplies a first input with a first coefficient and a first adder sums an output of the first multiplier and a second input to generate a first output. A second multiplier multiplies a third input with a second coefficient, a third multiplier multiplies a fourth input with a third coefficient, and a second adder sums outputs of the second and third multipliers to generate a second output. The second and third inputs are derived from the first output and the first and fourth inputs are derived from the second output. The first and second outputs generate digital values for first and second digital sinusoids, respectively.

    LOW POWER FINITE IMPULSE RESPONSE FILTER

    公开(公告)号:US20230033569A1

    公开(公告)日:2023-02-02

    申请号:US17867496

    申请日:2022-07-18

    Abstract: A finite impulse response (FIR) filter includes a plurality of registers. The data input terminal of each register is directly coupled to the input of the FIR filter. A new data value is passed to each register on each clock cycle of a filter clock signal. Only one of the registers processes the data value on each clock cycle. A ring counter is coupled to the registers and determines which register processes the data value on each dock cycle.

    CLOCK JITTER MEASUREMENT USING SIGNAL-TO-NOISE RATIO DEGRADATION IN A CONTINUOUS TIME DELTA-SIGMA MODULATOR

    公开(公告)号:US20200186162A1

    公开(公告)日:2020-06-11

    申请号:US16702246

    申请日:2019-12-03

    Abstract: A continuous time Delta-Sigma (CT-ΔΣ) modulator has an input node configured to receive an input signal and an output node configured to output a digital output signal. The CT-ΔΣ modulator includes a feedback loop with a summation circuit configured to sum the digital output signal with a jitter perturbed test signal to generate a signal supplied to an input of a digital to analog converter circuit. A single tone signal is injected with a jitter error of a clock signal to generate the jitter perturbed test signal. A processing circuit processes the digital output signal to detect a signal to noise ratio of the CT-ΔΣ modulator. The detected signal to noise ratio is indicative of presence of jitter in the clock signal.

Patent Agency Ranking