Abstract: The present invention relates to a system for network-on-chip power management. The system comprising a primary network-on-chip comprises multiple components, each component having a power controller, characterized by a secondary network-on-chip comprises a secondary network-on-chip master node and a plurality of secondary network-on-chip nodes connected thereto, the plurality of secondary network-on-chip nodes associated to the components of the primary network-on-chip for power managing individual and link components of the primary network-on-chip, and a power management unit connected to the secondary network-on-chip master node, configured to polling status registers of the components of the primary network-on-chip for accessing power states of each component, accessing routing information of the components of the primary network-on-chip and sending request to the secondary network-on-chip nodes for powering on or off the associated components of the primary network-chip through the power controller.

Abstract: The invention relates to a computer-implemented method (100) of generating and assigning identifier information to each router in a network-on-chip for arbitrating data packets. The method (100) comprises the steps of: generating and assigning a planar-axis coordinate, Z, for each router; generating and assigning an ascending value to each router link layer for every link between two routers of the same coordinate; selecting the origin router with the smallest value; assigning a coordinate comprising a horizontal-axis (X) and a vertical-axis (Y); calculating the distance of the coordinates; generating and assigning coordinates to adjacent routers; applying coordinate shrinking to get all coordinates in positive integer numbers with optimized ascending order; and repeating the steps to complete the generation and assignment of coordinates to all planar-axis routers.

Abstract: A memory controller for improving data integrity and providing data security. The memory controller including a transmit data path to transmit write data to a memory device, the transmit data path comprising a scrambling component, wherein the scrambling component includes a scrambling logic and an exclusive OR logic, wherein the write data is divided into a first portion and a second portion, wherein input of the scrambling logic comprises the first portion of the write data and an address associated with the write data to generate a pseudo-random output, and wherein input of the exclusive OR logic comprises the second portion of the write data, the pseudo-random output and a fixed seed corresponding to the first portion of the write data to generate a scrambled data.

Abstract: A method comprises the steps of receiving input from a user via user interface and selecting a plurality of flits from a plurality of ingress into a plurality of virtual channels followed by selecting the flits from the virtual channels into a plurality of egress based on the input from the user. The selection of the flits into the virtual channels and the egress characterized by the steps of computing default and elevated bandwidths of the virtual channels, computing default and elevated weights of the virtual channels based on the default and elevated bandwidths and generating a weightage lookup table using the default and elevated weights to perform arbitration weightage lookup for the flits with default and elevated priority levels for selecting the flits into the virtual channels and the egress, wherein the flits from the different ingress comprise different default and elevated weight.

Abstract: The present invention relates to a system and method for transferring configuration, management, debug information and asynchronous events between network-on-chip (NOC) and external interface, wherein said system, referred to as secondary network (101), comprises of a plurality of configuration bus (CBUS) network elements such as a master network element (103) and a plurality of basic network elements (105); whereby said secondary network (101) is capable to convey events such as request, acknowledge assertions or de-assertions, saving the need for numerous wires connecting between main NOC elements such as nodes or routers.

Abstract: The present invention relates to a method and apparatus of calibrating memory interface, wherein said method and apparatus is able to periodically re-adjust the placement of the receive enable signal in order to have said receive enable signal to be in an optimum position in relation to the DQS signal from an external memory device to achieve maximum timing margin regardless of voltage or temperature drift and/or process aging to the integrated circuit.

Abstract: The present invention discloses a computer-implemented method of data transmission for a Network-on-Chip to allow high performance routing through dynamic allocated buffer. The method comprises the steps of transferring command or data in a form of plurality of flits from a source node to a router and further to a destination node, and transmitting the flits from the destination node back to the router, wherein the flits are packetized for transmission according to channel width and transaction width, sequence, and priority routing through physical and virtual channels.

Abstract: The present invention relates to a system (100 or 200) for aligning a programmable clock or strobe. The system (100 or 200) comprises a first programmable delay unit (1a) for receiving the programmable clock or strobe, characterized by a second programmable delay unit (1b) connected in parallel to the first programmable delay unit (1a) for receiving the programmable clock or strobe, a switch (2) for switching one of the two programmable delay units (1a or 1b) to service the programmable clock or strobe so as to allow the other programmable delay unit (1a or 1b) to adjust the other programmable clock or strobe, and a control logic component (3) for handling the switching of the switch (2), in which the switch (2) swaps in the adjusted programmable clock or strobe to service a downstream clocktree or strobe path after the programmable clock or strobe is adjusted. The present invention also relates to a method for aligning a programmable clock or strobe.

Abstract: The present invention relates to a method (100) for network-on-chip arbitration. The method (100) comprises the steps of receiving input from a user via user interface and selecting a plurality of flits from a plurality of ingress into a plurality of virtual channels followed by selecting the flits from the virtual channels into a plurality of egress based on the input from the user. The selection of the flits into the virtual channels and the egress characterized by the steps of computing default and elevated bandwidths of the virtual channels, computing default and elevated weights of the virtual channels based on the default and elevated bandwidths and generating a weightage lookup table using the default and elevated weights to perform arbitration weightage lookup for the flits with default and elevated priority levels for selecting the flits into the virtual channels and the egress, wherein the flits from the different ingress comprise different default and elevated weight.

Abstract: A memory controller system (and method of pre-scheduling memory transaction) for a storage device comprising a linked-list controller; a plurality of command buffers to store read commands or write commands, and an arbiter to issue command. Each command buffer containing variables set by the linked-list controller. The linked-list controller is configured to execute commands in sequence independent of logical command buffer sequence. The command buffer is configured to support read commands with maximum number of write commands. The linked-list controller is configured to merge multiple write commands that are going to the same address and snarfs read commands from write commands if both commands are going to the same address and the read commands that are snarfed are loaded into a separate command buffer. The variables contained in each of the command buffer indicates status and dependency of the command buffer to create a link forming a command sequence.

Abstract: A memory controller system (and method of pre-scheduling memory transaction) for a storage device comprising a linked-list controller; a plurality of command buffers to store read commands or write commands, and an arbiter to issue command. Each command buffer containing variables set by the linked-list controller. The linked-list controller is configured to execute commands in sequence independent of logical command buffer sequence. The command buffer is configured to support read commands with maximum number of write commands. The linked-list controller is configured to merge multiple write commands that are going to the same address and snarfs read commands from write commands if both commands are going to the same address and the read commands that are snarfed are loaded into a separate command buffer. The variables contained in each of the command buffer indicates status and dependency of the command buffer to create a link forming a command sequence.

Abstract: A memory controller system comprising a scheduling module, a data buffer module, a global order buffer module and a linked-list controlling module. The linked-list controlling module is configured to receive and process a first command comprising a write command or a read command. The linked-list controlling module constructs at least one linked-list head based on scheduling dependencies and determines whether the first command is dependency-hit by comparing the first command with the existing commands buffered in the global order buffer module. If the first command is dependency-hit, the linked-list controlling module is configured to trigger a write merging process or a read snarfing process.

Abstract: A device and method of clock synchronization for external memory interface. The device, and method, generating a clock output from a phase lock loop block via a sub-module clocking component; multiplexing the clock output through a global clock into different clock domains; clocking the data and an address or a command path by each clock domain; clocking the phase compensation FIFO by clock domain and clock phase alignment clock; generating the pointer for the phase compensation FIFO from central pointer generator block; and synchronizing the pointer of the adjacent intellectual property module with a parent intellectual property module.

Abstract: An apparatus and a method for synchronizing output clock signals across a plurality of phase-locked loops (PLLs). The apparatus coupled within each PLL comprises: a local counter configured to provide a count when receiving a reference clock signal; a comparator configured to compare the count from the local counter with a predetermined or preconfigured value; wherein a multiplexor connected to the local counter and counters of adjacent PLLs, configured to select the count from the local counter or a count from the counters of the adjacent PLLs; wherein the selected count from the multiplexor is incremented and directed to the local counter; wherein an output clock divider enable is asserted to the PLL to start an output clock divider to generate the output clock signal when the count from the local counter reaches the predetermined or preconfigured value.

Abstract: A memory sequencer system for external memory protocols including a control center and a microcontroller; a control center network-on-chip having nodes connected point-to-point to synchronize and co-ordinate communication; whereby a command and address sequencer to generate command, control and address commands for specific memory protocols; and at least one data sequencer to generate pseudo-random or deterministic data patterns for each byte lane of a memory interface; wherein said command and address sequencer and said data sequencer are chained to form complex address and data sequences for memory interface training, calibrating and debugging; wherein said control center network-on-chip interconnecting the control center with said command and address sequencer and data sequencer to provide firmware controllability.

Abstract: A memory controller for improving data integrity and providing data security. The memory controller including a transmit data path to transmit write data to a memory device, the transmit data path comprising a scrambling component, wherein the scrambling component includes a scrambling logic and an exclusive OR logic, wherein the write data is divided into a first portion and a second portion, wherein input of the scrambling logic comprises the first portion of the write data and an address associated with the write data to generate a pseudo-random output, and wherein input of the exclusive OR logic comprises the second portion of the write data, the pseudo-random output and a fixed seed corresponding to the first portion of the write data to generate a scrambled data.

Abstract: A voltage clamping circuit for protecting an internal circuitry comprising an input means for receiving Vin; a p-channel clamping transistor (PCT) coupled to input means for clamping Vin to prevent Vin from falling below a p-channel biasing voltage VbiasP; an n-channel clamping transistor (NCT) coupled to input means for clamping Vin to prevent Vin from rising above an n-channel biasing voltage VbiasN; and a plurality of output means for providing a first output voltage from PCT and a second output voltage from NCT; a p-channel bias circuit including a first, a second and a third bias transistor with each transistor possessing a threshold voltage Vth for providing a p-channel bias voltage to turn on PCT; and an n-channel bias circuit including a fourth, a fifth and a sixth bias transistor with each transistor possessing the threshold voltage Vth for providing an n-channel bias voltage to turn on NCT.

Abstract: A voltage clamping circuit for protecting an internal circuitry comprising an input means for receiving Vin; a p-channel clamping transistor (PCT) coupled to input means for clamping Vin to prevent Vin from falling below a p-channel biasing voltage VbiasP; an n-channel clamping transistor (NCT) coupled to input means for clamping Vin to prevent Vin from rising above an n-channel biasing voltage VbiasN; and a plurality of output means for providing a first output voltage from PCT and a second output voltage from NCT; a p-channel bias circuit including a first, a second and a third bias transistor with each transistor possessing a threshold voltage Vth for providing a p-channel bias voltage to turn on PCT; and an n-channel bias circuit including a fourth, a fifth and a sixth bias transistor with each transistor possessing the threshold voltage Vth for providing an n-channel bias voltage to turn on NCT.

Abstract: A generic physical layer providing a unified architecture for interfacing with an external memory device. The physical layer comprises a transmit data path for transmitting a parallel data to the external memory device and a receive data path for receiving a serial data from the external memory device. The generic physical layer is characterized by a receive enable logic for masking strobe of the serial data, wherein the transmit data path and the receive data path each comprising a FIFO circuit, a data rotator and an adjustable-delay logic for delay tuning and a per-bit-deskew for multi-lane support.

Abstract: A generic physical layer providing a unified architecture for interfacing with an external memory device. The physical layer comprises a transmit data path for transmitting a parallel data to the external memory device and a receive data path for receiving a serial data from the external memory device. The generic physical layer is characterized by a receive enable logic for masking strobe of the serial data, wherein the transmit data path and the receive data path each comprising a FIFO circuit, a data rotator and an adjustable-delay logic for delay tuning and a per-bit-deskew for multi-lane support.