公开(公告)号：GB2244404A

公开(公告)日：1991-11-27

申请号：GB9109224

申请日：1991-04-29

Applicant: MOTOROLA INC

Inventor： FELDBAUMER DAVID W ,  VYNE ROBERT L

IPC: G06F13/00 ,  G06F3/00 ,  H03H11/28

Abstract: An active integrated termination circuit for providing a predetermined impedance at an output includes first and second resistors each having one end of which is commonly connected to the output. A first switching element is coupled between the other end of the first resistor and a first power supply conductor and is responsive to control signals for selectively coupling and de-coupling the first resistor to the first power supply conductor. A second switching element is coupled between the other end of the second resistor and a second power supply conductor and is responsive to the control signals for selectively coupling and de-coupling the second resistor to the second power supply conductor. The first and second resistors are polycrystalline silicon resistors and are trimmed to predetermined values by pulsing a high current unilaterally therethrough.

公开(公告)号：AU2002357318A1

公开(公告)日：2003-07-30

申请号：AU2002357318

申请日：2002-12-17

Applicant: MOTOROLA INC

Inventor： FERNANDEZ VIRGILIO A ,  FELDBAUMER DAVID W ,  WENINGER DARREN V

IPC: G01R31/3167 ,  G01R31/3185 ,  H04B17/00

Abstract: An enable propagation controller employed in an integrated circuit operates in either a sequence manager mode or a transparent mode. When operating in the sequence manager mode, the enable propagation controller allows a set of signals intended to enable either a set of transmission or a set of reception signals to pass through to their corresponding transmission or receptions sub-circuits. Each of the signals in the desired set is allowed to pass through in a predetermined sequence and for a predetermined duration that may or may not be influenced by a set of control bits received by the enable propagation controller. When operating in a transparent mode, all enable signals are allowed to pass through to corresponding intended sub-circuits.

公开(公告)号：HK180895A

公开(公告)日：1995-12-08

申请号：HK180895

申请日：1995-11-30

Applicant: MOTOROLA INC

Inventor： FELDBAUMER DAVID W ,  VYNE ROBERT L

IPC: G06F13/00 ,  G06F3/00 ,  H03H11/28 ,  H03H7/38

Abstract: An active integrated termination circuit for providing a predetermined impedance at an output includes first and second resistors each having one end of which is commonly connected to the output. A first switching element is coupled between the other end of the first resistor and a first power supply conductor and is responsive to control signals for selectively coupling and de-coupling the first resistor to the first power supply conductor. A second switching element is coupled between the other end of the second resistor and a second power supply conductor and is responsive to the control signals for selectively coupling and de-coupling the second resistor to the second power supply conductor. The first and second resistors are polycrystalline silicon resistors and are trimmed to predetermined values by pulsing a high current unilaterally therethrough.

公开(公告)号：AU2003279029A1

公开(公告)日：2004-07-29

申请号：AU2003279029

申请日：2003-09-23

Applicant: MOTOROLA INC

Inventor： SOFIANOS PAUL B ,  FELDBAUMER DAVID W ,  WENINGER DARREN K

IPC: H03C3/09

Abstract: A dual-port voltage control oscillator for use in a frequency synthesizer has first and second input ports and an output. The first port is coupled in a phase-locked-loop configuration for receiving input data and a reference frequency. The phase-locked-loop tunes the oscillator in response to a channel selection and trim parameter. The second port of the oscillator has a variable gain characteristic. A multiplier is coupled to the second port for multiplying the input data by a transfer function to alter the input data thereby compensating for the second port variable gain characteristic.

公开(公告)号：GB2244404B

公开(公告)日：1993-07-21

申请号：GB9109224

申请日：1991-04-29

Applicant: MOTOROLA INC

Inventor： FELDBAUMER DAVID W ,  VYNE ROBERT L

IPC: G06F13/00 ,  G06F3/00 ,  H03H11/28

Abstract: An active integrated termination circuit for providing a predetermined impedance at an output includes first and second resistors each having one end of which is commonly connected to the output. A first switching element is coupled between the other end of the first resistor and a first power supply conductor and is responsive to control signals for selectively coupling and de-coupling the first resistor to the first power supply conductor. A second switching element is coupled between the other end of the second resistor and a second power supply conductor and is responsive to the control signals for selectively coupling and de-coupling the second resistor to the second power supply conductor. The first and second resistors are polycrystalline silicon resistors and are trimmed to predetermined values by pulsing a high current unilaterally therethrough.