Systems and methods of phase frequency detection with clock edge overriding reset, extending detection range, improvement of cycle slipping and/or other features
Granted: December 26, 2017
Patent Number:
9853634
Systems and methods associated with phase frequency detection are disclosed. In one illustrative implementation, a phase frequency detection (PFD) circuit device may comprise first circuitry and second circuitry having a set input, a reset input, and an output, wherein the set input has a higher priority than the reset input, and additional circuitry arranged and operatively coupled to provide advantageous operation of the PFD circuit device. According to some implementations, for…
Systems and methods of pipelined output latching involving synchronous memory arrays
Granted: December 19, 2017
Patent Number:
9847111
Systems and methods of synchronous memories and synchronous memory operation are disclosed. According to one illustrative implementation, a memory device is disclosed comprising memory circuitry having a memory output, the memory circuitry including a sense amplifier having a first output and a second output, a first data path coupled to the first output of the sense amplifier, the first data path including 2 latches/registers, and a second data path coupled to the second output of the…
Systems and methods involving control-I/O buffer enable circuits and/or features of saving power in standby mode
Granted: October 31, 2017
Patent Number:
9804856
A method of operating a clock frequency detected control I/O buffer enable circuitry and/or features of saving power. In illustrative implementations, the method may be directed to providing low standby power consumption, such as providing low standby power consumption in high-speed synchronous SRAM and RLDRAM devices.
Systems and methods of phase-locked loop involving closed-loop, continuous frequency range, auto calibration and/or other features
Granted: August 8, 2017
Patent Number:
9729159
Systems and methods involving phase-locked-loop (PLL) circuitry are disclosed. In one illustrative implementation, a PLL circuit device may comprise voltage controlled oscillator (VCO) circuitry having a bias signal that sets a frequency range, circuitry that shifts the VCO circuitry to operate in one of the frequency ranges, and other circuitry to compare/calibrate signals and/or set the bias current. According to further implementations, as a function of operation of the circuitry, an…
Systems and methods of phase-locked loop involving closed-loop, continuous frequency range, auto calibration and/or other features
Granted: August 1, 2017
Patent Number:
9722618
Systems and methods involving phase-locked-loop (PLL) circuitry are disclosed. In one illustrative implementation, a PLL circuit device may comprise voltage controlled oscillator (VCO) circuitry having a bias signal that sets a frequency range, circuitry that shifts the VCO circuitry to operate in one of the frequency ranges, and other circuitry to compare/calibrate signals and/or set the bias current. According to further implementations, as a function of operation of the circuitry, an…
Systems and methods involving fast-acquisition lock features associated with phase locked loop circuitry
Granted: June 27, 2017
Patent Number:
9692429
Systems and methods are disclosed relating to fields of clock/data acquisition or handling, such as clock/data locking and the like. In one exemplary implementation, phase lock loop (PLL) circuitry may comprise voltage controlled oscillator (VCO) circuitry, phase frequency detector, converting circuitry, and frequency detector (FD) circuitry that outputs a frequency difference signal proportional to frequency difference between frequencies of a feedback clock signal and a reference clock…
Systems and methods involving multi-bank, dual- or multi-pipe SRAMs
Granted: June 13, 2017
Patent Number:
9679631
Systems and methods are disclosed for increasing the performance of static random access memory (SRAM). Various systems herein, for example, may include or involve dual- or multi-pipe, multi-bank SRAMs, such as Quad-B2 SRAMs. In one illustrative implementation, there is provided an SRAM memory device including a memory array comprising a plurality of SRAM banks and pairs of separate and distinct pipes associated with each of the SRAM banks, wherein each pair of pipes may provide…
In-memory computational device
Granted: May 16, 2017
Patent Number:
9653166
A computing device includes a memory array built of several sections having memory cells arranged in rows and column, at least one cell in each column of the memory array being connected to a bit line; and at least one multiplexer to connect a bit line in a first column of a first section to a bit line in a second column in a second section different from the first section, where the second column is not continuous with the first column ; and a decoder to activate at least two word lines…
Memory systems and methods involving high speed local address circuitry
Granted: April 4, 2017
Patent Number:
9613670
Systems and methods of memory and memory operation are disclosed, such as providing a circuit including a local address driver voltage source for memory decoding. In one exemplary implementation, an illustrative circuit may comprise a first buffer and a capacitor. The first buffer may comprise a power input and a ground input. The capacitor may comprise a first terminal connected to the power input of the first buffer and a second terminal connected to the ground input of the first…
Systems and methods involving propagating read and write address and data through multi-bank memory circuitry
Granted: April 4, 2017
Patent Number:
9613684
Multi-bank SRAM devices, systems, methods of operating multi-bank SRAMs, and/or methods of fabricating multi-bank SRAM systems are disclosed. For example, illustrative multi-bank SRAMs and methods may include or involve features for capturing read and write addresses at a particular frequency, splitting and/or combining them via one or more splitting/combining processes, and bussing them to each SRAM bank, where they may be split and/or combined via one or more splitting/combining…
Systems and methods of phase-locked loop involving closed-loop, continuous frequency range, auto calibration and/or other features
Granted: March 28, 2017
Patent Number:
9608651
Systems and methods involving phase-locked-loop (PLL) circuitry are disclosed. In one illustrative implementation, a PLL circuit device may comprise voltage controlled oscillator (VCO) circuitry having a bias signal that sets a frequency range, circuitry that shifts the VCO circuitry to operate in one of the frequency ranges, and other circuitry to compare/calibrate signals and/or set the bias current. According to further implementations, as a function of operation of the circuitry, an…
SRAM multi-cell operations
Granted: January 31, 2017
Patent Number:
9558812
A multi-memory cell operator includes a non-destructive memory array, an activation unit and a multiple column decoder. The non-destructive memory array has first and second bit lines per column. The activation unit activates at least two cells in a column of the memory array at the same time thereby to generate multiple Boolean function outputs of the data and of complementary data of the at least two cells on the first bit line and different multiple Boolean function outputs of the…
Systems and methods of phase frequency detection involving features such as improved clock edge handling circuitry/aspects
Granted: November 29, 2016
Patent Number:
9509296
Systems and methods herein may include or involve control circuitry that detects missing edges of reference and/or feedback clocks and may block the next N rising edges of the feedback clock or reference clock, respectively. In some implementations, a phase frequency detector (PFD) circuit comprises first circuitry including an output that outputs a missing edge signal. The first circuitry may include components arranged to detect a missing rising edge of one or both of a reference clock…
Systems and methods involving data inversion devices, circuitry, schemes and/or related aspects
Granted: November 15, 2016
Patent Number:
9494647
Systems and methods of data inversion, circuitry, detection and/or schemes are disclosed. According to illustrative implementations, exemplary circuitry may include static detection or detection circuitry such as those involving static current sources to detect a threshold for data inversion, pre-conditioning of detection circuitry, and/or active detection circuitry or schemes. In some implementations, exemplary memory or data inversion circuitry may comprise a transistor array, a bias…
Systems and methods of double/quad data rate memory involving input latching, self-timing and/or other features
Granted: November 1, 2016
Patent Number:
9484076
Systems and methods relating to memory and/or memory latching are disclosed. In one exemplary implementation, an illustrative memory device may include self-timed pulse generator circuitry, first input latch circuitry, read/write control circuitry, and second input latch circuitry. According to further implementations herein, fast address access for read and write may be provided in the same cycle via a self-timed pulse in the input latch circuit and/or via associated control/scheme from…
Systems and methods of memory and memory operation involving input latching, self-timing and/or other features
Granted: August 30, 2016
Patent Number:
9431079
Systems and methods relating to memory and/or memory latching are disclosed. In one exemplary implementation, an illustrative memory device may include self-timed pulse generator circuitry, first input latch circuitry, read/write control circuitry, and second input latch circuitry. According to further implementations herein, fast address access for read and write may be provided in the same cycle via a self-timed pulse in the input latch circuit and/or via associated control/scheme from…
In-memory computational device
Granted: August 16, 2016
Patent Number:
9418719
A computing device comprising includes a memory array having a plurality of sections with memory cells arranged in rows and column, at least one cell in each column of the memory array connected to a bit line having a bit line voltage associated with a logical 1 or a logical 0. The computing device additionally includes at least one multiplexer to connect a bit line in a column of a first section to a bit line in a column in a second section different from the first section and a decoder…
Systems and methods of phase frequency detection with clock edge overriding reset, extending detection range, improvement of cycle slipping and/or other features
Granted: August 9, 2016
Patent Number:
9413295
Systems and methods associated with phase frequency detection are disclosed. In one illustrative implementation, a phase frequency detection (PFD) circuit device may comprise first circuitry and second circuitry having a set input, a reset input, and an output, wherein the set input has a higher priority than the reset input, and additional circuitry arranged and operatively coupled to provide advantageous operation of the PFD circuit device. According to some implementations, for…
Systems and methods of pipelined output latching involving synchronous memory arrays
Granted: August 9, 2016
Patent Number:
9412440
Systems and methods of synchronous memories and synchronous memory operation are disclosed. According to one illustrative implementation, a memory device is disclosed comprising memory circuitry having a memory output, the memory circuitry including a sense amplifier having a first output and a second output, a first data path coupled to the first output of the sense amplifier, the first data path including 2 latches/registers, and a second data path coupled to the second output of the…
TCAM search unit including a distributor TCAM and DRAM and a method for dividing a database of TCAM rules
Granted: August 2, 2016
Patent Number:
9406381
A search unit including a distributor TCAM and a DRAM search unit and a method to divide a database of TCAM rules is disclosed. The method includes selecting a rule having multiple “don't care” values and selecting a bit of the rule having a “don't care” value, generating two distributor rules based on the selected rule, associating rules of the database which match each of the distributor rules with the distributor rule they match to create subset databases, and repeating the…
