Standard Microsystems Corporation

Freescale Semiconductor,inc.

David E Haglan

Morgan H Monks

Reporting a faulty charging device. A mobile device may determine if a charging device is a faulty charging device. The determination may be performed after coupling the charging device to a power source and to the mobile device. If the charging device is a faulty charging device, the mobile device may report a location of the faulty charging device over a network.

Reporting a faulty charging device

A protocol may enable support of the USB 2.0 LPM (Link Power Management) Addendum by a ULPI PHY (Universal Serial Bus Transceiver Macrocell Low-Pin Interface Physical Layer Device), facilitating transmitting the reserved PID (Physical Interface Device) token, used in the LPM Extended Transaction, through a ULPI bus. Bits [] of a ULPI Tx Cmd (Transmit Command) byte may be reused, with the value of those bits being 4'b0 for a transmission (normally indicating a No PID transmission), by configuring the ULPI PHY to qualify the selected four Tx Cmd bits (bits [] of the Tx Cmd) with the Opmode code. The ULPI PHY may thereby interpret bits [] of the Tx Cmd byte based on the value of the Opmode, and may not transmit the Extended PID when the Opmode is set to 2&#x2032;b10, that is, when the Opmode is indicative of bit-stuffing and NRZI encoding being disabled, for example during a Chirp transmission. When the Opmode code is set to 2&#x2032;b0, indicative of normal bit-stuffing, and the Tx Cmd bits [] are set to 4&#x2032;b0 during a transmission (Tx Cmd bits[]=2&#x2032;b01), then the PHY may transmit the Extended PID, followed by the rest of the extended transaction onto a USB.

Physical device (PHY) support of the USB2.0 link power management addendum using a ULPI PHY interface standard

A method includes providing an in-phase signal and a quadrature-phase signal (I/Q signals), processing the in-phase and quadrature phase signals to produce a magnitude signal and a phase signal, conditioning the phase signal to produce a conditioned phase signal, filtering the magnitude signal to produce a filtered magnitude signal, and amplifying the conditioned phase signal as a function of the filtered magnitude signal to produce a polar modulated signal. An apparatus includes a pair of I/Q channels, an I/Q to magnitude/phase circuit coupled to the pair of I/Q channels, a magnitude conditioning circuit coupled to the I/Q to magnitude/phase circuit; the magnitude conditioning circuit embodying a magnitude filter; a phase conditioning circuit coupled to the I/Q to magnitude/phase circuit, and an amplifier circuit coupled to the magnitude conditioning circuit and the phase conditioning circuit.

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Chandler, AZ, United States of America

David E Haglan