Nxp B.v.

Koninklijke Philips Corporation N.v.

Hartmut Habben

Matthias Berthold Muth

Clemens De Haas

Anthony Adamson

Neil Edward Birns

William J Silvkoff

Peter Hank

A circuit is provide comprising a first input coupled to a transmit data input of a bus transceiver; and a first output coupled to a bus. The circuit is configured to be coupled in parallel with the bus transceiver. The circuit is further configured to, in response to a dominant to recessive transition on the transmit data input, lower an impedance of the bus.

Push pull ringing suppression circuit

A circuit is provided for ringing suppression. The circuit comprises a termination resistor coupled to a bus via a switch; and a control circuit. The control circuit comprises an input coupled to a data input pin of a bus transceiver and an output coupled to control the termination resistor. The circuit is configured to selectively couple the resistor to the bus in response to a transition on the input bit stream.

Feedforward ringing suppression circuit

A data memory for storing elements, which data memory stores the data of the elements and at least a chained list which contains, for each stored element, at least its element address, its element number and a pointer to the address of the stored element having the next-higher element number. There are also provided an element status table, in which the element numbers of the elements present in the data memory are taken up, and also an address reference table which contains the element addresses for all element numbers.

Fast search algorithm for data sorting in chained lists

A method for conserving power in a CAN microcontroller that includes a processor core and a CAN/CAL module that includes a plurality of sub-blocks that cooperatively function to process incoming CAL/CAN messages, which method includes the steps of placing the processor core in a power-reduction mode of operation (e.g., a sleep or idle mode of operation), placing the CAN/CAL module in a power-reduction mode of operation, and activating the CAN/CAL module to process an incoming CAL/CAN message (e.g., to perform automatic hardware assembly of a multi-frame, fragmented CAL/CAN message), thereby terminating the power-reduction mode of operation thereof, while the processor core is in its power-reduction mode of operation. In a preferred embodiment, the CAN/CAL module automatically assembles incoming, multi-frame, fragmented messages while the processor core remains in its power-reduction mode of operation, and the CAN/CAL module generates a message-complete interrupt in response to completion of assembly of the multi-frame, fragmented message, whereby the terminating step is executed in response to the message-complete interrupt. In another embodiment, the method includes the steps of placing the entire CAN microcontroller, including both the processor core and the CAN/CAL module in a power-down mode of operation, detecting receipt of an incoming message, and activating the CAN/CAL module in response to the detecting step to process the incoming message (e.g., to perform automatic hardware assembly of a multi-frame, fragmented CAL/CAN message), thereby terminating the power-down mode of operation of the CAN/CAL module, without terminating the power-down mode of operation of the processor core.

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Hamburg, Germany

Hartmut Habben