| 摘要 |
Various embodiments of the present invention relate to systems, devices and methods of employing a single-wire data interface to program, debug and test a programmable element. A 1-WireLoader system comprises a programming entity, a physical-layer interface device, a single signal wire and the programmable element. The programming entity generates a command sequence comprising a plurality of commands. Each command in the plurality of commands is associated with a data in a plurality of data. The physical-layer interface device is coupled directly to the programming entity, and indirectly to the programmable element via a single signal wire. A single pin is involved at the interface of the programmable element single pin to receive commands from and exchange data with the programming entity. Commands and associated data are time-multiplexed to a serial signal according to a data sequence protocol, and communicated between the programming entity and the programmable element via the single-wire data interface, efficiently reducing the pin count at an interface of the programmable element. In some embodiments of the 1-WireLoader system, this single pin is multiplexed with a reset I/O pin while not interfering with normal operation of the system reset signal. |
