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公开(公告)号:US20190089314A1
公开(公告)日:2019-03-21
申请号:US15706242
申请日:2017-09-15
Applicant: QUALCOMM Incorporated
Inventor: Yanjie SUN , Jing-Hwa CHEN , Zhenying LUO , Yan Kit Gary HAU , Jisun RYU , Ashwin DUGGAL , Kihun CHANG , ZhenQi CHEN , Xinwei WANG , Xiangdong ZHANG
CPC classification number: H03F1/52 , H03F1/0205 , H03F1/565 , H03F3/195 , H03F3/245 , H03F2200/171 , H03F2200/225 , H03F2200/318 , H03F2200/387 , H03F2200/391 , H03F2200/411 , H03F2200/426 , H03F2200/451 , H04B1/04 , H04B1/48 , H04B1/52 , H04B2001/0408
Abstract: Certain aspects of the present disclosure provide methods and apparatus for operating a power amplifier. In one example, the apparatus includes a power amplifier configured to amplify an input signal having a frequency to produce a radio frequency (RF) output signal at an output and a harmonic tuning circuit coupled between a power supply and the power amplifier output, the harmonic tuning circuit configured to reduce a current or voltage provided to the power amplifier via a resonance at one or more harmonics of the frequency of the input signal.
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公开(公告)号:US20190163649A1
公开(公告)日:2019-05-30
申请号:US16155554
申请日:2018-10-09
Applicant: QUALCOMM Incorporated
Inventor: Lalan Jee MISHRA , Helena Deirdre O'SHEA , Richard Dominic WIETFELDT , ZhenQi CHEN
Abstract: Systems, methods, and apparatus for functionally extending a capability of a write datagram for RFFE and SPMI devices are provided. A sending device sets a configuration register to indicate an operation mode of a write command and generates a command code field in the write command. A most significant bit of the command code field has a value of 1 and remaining bits of the command code field are defined based on the operation mode. The sending device further includes payload bytes in a payload field of the write command based on the operation mode and sends the write command to a receiver via a bus interface. The sending device may also set a page-address register to include a page-address to be used if page segmented access (PSA) is enabled for the write command and set the configuration register to indicate whether the PSA for the write command is enabled.
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公开(公告)号:US20180287835A1
公开(公告)日:2018-10-04
申请号:US15920270
申请日:2018-03-13
Applicant: QUALCOMM Incorporated
Inventor: Lalan Jee MISHRA , Helena Deirdre O'SHEA , Chiew-Guan TAN , ZhenQi CHEN , Wilson Jianbo CHEN , Richard Dominic WIETFELDT
Abstract: Systems, methods, and apparatus for managing digital communication interfaces coupled to data communication links are disclosed. In one example, the digital communication interfaces provide methods, protocols and techniques that may be used to provide a common slew rate for signals transmitted on a communication link that may be operated at multiple different voltage ranges. A method may include determining a first voltage range defined for transmitting signals over the communication link when the over the communication link is operated in a first mode of operation, configuring a line driver to operate within the first voltage range with a common slew rate that applies to each of a plurality of modes of operation, and transmitting first data over the communication link in one or more signals that switch within the first voltage range with the common slew rate. Each mode of operation may define a different voltage range for transmitting signals.
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公开(公告)号:US20210081348A1
公开(公告)日:2021-03-18
申请号:US17003724
申请日:2020-08-26
Applicant: QUALCOMM Incorporated
Inventor: Reza RODD , Scott DAVENPORT , Umesh SRIKANTIAH , ZhenQi CHEN
Abstract: Systems, methods, and apparatus for improving bus latency and reducing bus congestion are described. A data communication apparatus has a first interface circuit configured to couple the data communication apparatus to a primary serial bus, a second interface circuit configured to couple the data communication apparatus to a plurality of secondary serial buses, and a sequencer configured to respond to a first command received from the primary serial bus by initiating execution of a preconfigured sequence that causes a sequence of commands to be transmitted through the second interface circuit. The sequence of commands may be configured or selected to access registers in at least one device that is coupled to one of the secondary serial buses.
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公开(公告)号:US20210081340A1
公开(公告)日:2021-03-18
申请号:US17003697
申请日:2020-08-26
Applicant: QUALCOMM Incorporated
Inventor: Reza RODD , Scott DAVENPORT , Umesh SRIKANTIAH , ZhenQi CHEN
Abstract: Systems, methods, and apparatus for improving bus latency are described. A data communication method includes receiving a trigger actuation command from a bus master coupled to the serial bus, determining that a sequence is being executed in the slave device, and providing a trigger actuation signal corresponding to the trigger actuation command when execution of the sequence has been completed. A sequence initiation command may be received before the trigger actuation command, and the sequence may be initiated in response to the sequence initiation command. The trigger actuation command may be queued in a first queue, the sequence initiation command in may be queued in a second queue. Trigger actuation commands in the first queue may be associated with sequence initiation commands in the second queue. The sequence may be initiated in response to a sequence initiation command associated with the trigger actuation command corresponding to the trigger actuation signal.
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公开(公告)号:US20190286587A1
公开(公告)日:2019-09-19
申请号:US16262267
申请日:2019-01-30
Applicant: QUALCOMM Incorporated
Inventor: Lalan Jee MISHRA , Richard Dominic WIETFELDT , Helena Deirdre O'SHEA , Wolfgang ROETHIG , Christopher Kong Yee CHUN , ZhenQi CHEN , Scott DAVENPORT , Chiew-Guan TAN , Wilson CHEN , Umesh SRIKANTIAH
Abstract: Systems, methods, and apparatus for data communication are provided. A method performed by a bus master includes terminating transmission of a first datagram by signaling a first bus park cycle on a serial bus, causing a driver to enter a high-impedance state, opening an interrupt window by providing a first edge in a clock signal transmitted on a second line of the serial bus, closing the interrupt window by providing a second edge in the clock signal, signaling a second bus park cycle on the serial bus, initiating an arbitration process when an interrupt was received on the first line of the serial bus while the interrupt window was open, and initiating a transmission of a second datagram when an interrupt was not received on the first line of the serial bus while the interrupt window was open.
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公开(公告)号:US20180113834A1
公开(公告)日:2018-04-26
申请号:US15792106
申请日:2017-10-24
Applicant: QUALCOMM Incorporated
Inventor: Helena Deirdre O'SHEA , Ryan Scott Castro SPRING , Satheesha RANGEGOWDA , ZhenQi CHEN , Lalan Jee MISHRA , Richard Dominic Wietfeldt , Kevin Hsi Huai WANG
IPC: G06F13/42
CPC classification number: G06F13/4282 , G06F13/4291 , G06F2213/0012
Abstract: Methods and apparatuses are described that facilitate data communication across a serial bus. In one configuration, a transmitter configures a plurality of devices by assigning one or more trigger registers to each device of the plurality of devices and sends to each device a trigger register assignment command indicating a trigger register assigned to a device and identifying a trigger corresponding to the device. The transmitter then addresses a packet to an assigned trigger register and generates a bit-index field in the packet. Bits in the bit-index field respectively represent triggers corresponding to devices associated with the assigned trigger register, wherein each bit indicates whether one or more corresponding devices are enabled for operation. The transmitter then sends the packet to the plurality of devices via the serial bus.
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公开(公告)号:US20190302830A1
公开(公告)日:2019-10-03
申请号:US15942191
申请日:2018-03-30
Applicant: QUALCOMM Incorporated
Inventor: ZhenQi CHEN , Jianguo YAO , Scott DAVENPORT , Helena Deirdre O'SHEA , Reza MOHAMMADPOURRAD
IPC: G06F1/04
Abstract: Systems, methods, and apparatus for internal on-chip clock calibration for devices coupled to a serial bus are described. A data line of the bus is monitored at a device in order to detect select command signals on the data line, where the select command signals have an accompanying clock signal, such as a burst clock, on a clock line of the serial bus sent concurrently with the command signal. The internal on-chip clock generator in the receiving device utilizes the clock signal occurring with the command signal for calibration, where the select signals are those signals sufficiently long enough for a receiving device to effectively utilize the concurrent clock signal for calibration purposes. In this manner, clock calibration for an internal clock is maintained accurately without the need for an extra clock calibration input.
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公开(公告)号:US20180060272A1
公开(公告)日:2018-03-01
申请号:US15803639
申请日:2017-11-03
Applicant: QUALCOMM Incorporated
Inventor: Lalan Jee MISHRA , Richard Dominic WIETFELDT , Helena Deirdre O'SHEA , ZhenQi CHEN , Wolfgang ROETHIG
IPC: G06F13/42 , G06F13/364 , G06F13/40 , G06F21/85
CPC classification number: G06F13/4286 , G06F13/102 , G06F13/16 , G06F13/28 , G06F13/364 , G06F13/4022 , G06F21/85
Abstract: Methods and apparatuses are described that facilitate data communication between a first slave device and a second slave device across a serial bus interface. In one configuration, a master device receives, from a first slave device, a request to send a masked-write datagram to a second slave device via a bus, wherein the masked-write datagram is addressed to a radio frequency front end (RFFE) register of the second slave device. The masked-write datagram includes a mask field identifying at least one bit to be changed in the RFFE register and a data field providing a value of the at least one bit to be changed in the RFFE register. The master device detects whether the first slave device is authorized to send the masked-write datagram to the second slave device and permits the first slave device to send the masked-write datagram to the second slave device if authorization is detected.
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