UART support for address bit on seven bit frames
AssigneeAdvanced Micro Devices, Inc.
InventorMelanie D. Typaldos
Life of this patent
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Abstract
An asynchronous serial port provides increased serial throughput. In data frames comprising eight data bits, at least one bit may be disabled. The status and communication bits within the frame are moved into the locations of the disabled bits. The number of bits in the transmission data frame is thus reduced by the number of disabled data bits.
Claims25
A microcontroller comprising:
- an execution unit for executing instructions;
- and
- an asynchronous serial port for communicating asynchronous frames having a frame length, each frame comprising at least one data bit and an address bit, wherein the asynchronous serial port is selectably configurable by the execution unit to communicate either n or n−1 data bits, for n greater than 1, prior to an address bit, the placement of the address bit being independent of frame length.
An asynchronous serial port for communicating asynchronous frames having a frame length, each frame comprising at least one data bit and an address bit, wherein the asynchronous serial port is selectably configurable by the execution unit to communicate either n or n−1 data bits, for n greater than 1, prior to an address bit the placement of the address bit being independent of frame length.
Dependencies are inferred from the claim text.