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US 2016/0098373 A1Published application
Control of tx/rx mode in serial half-duplex transceiver separately from communicating host
AssigneeTexas Instruments Incorporated
InventorsSchuyler T. Patton, JR., Punya Prakash, Melissa Marie Watkins, Saqib Nadeem Mohammad, Bradley James Griffis
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Abstract
Signaling to control transmit/receive mode transitions of a serial half-duplex transceiver coupled externally to an integrated circuit is provided by the integrated circuit separately from a host processor of the integrated circuit with which the transceiver communicates. This can avoid slow transceiver turn-around times that may be associated with host processor control of the mode transitions.
Claims7
A process of operating an integrated circuit comprising:
- monitoring, in logic circuitry separate from host processor circuitry, a transmit data output of a UART for a start bit;
- starting a timer in the logic circuitry and selecting a transmit mode output from the logic circuitry upon monitoring a start bit on the transmit data output;
- and
- selecting a receive mode output from the logic circuitry upon expiration of the timer.
1 more element
A process of operating an integrated circuit comprising:
- first monitoring, in logic circuitry separate from host processor circuitry, a line status register of a UART for a start bit;
- selecting a transmit mode output from the logic circuitry upon monitoring a start bit in the line status register;
- second monitoring in the logic circuitry the line status register for a start bit or an end of a transmission;
- and
- selecting a receive mode output from the logic circuitry upon monitoring an end of transmission in the line status register.
2 more elements
Dependencies are inferred from the claim text.