Specifications

PL 3120/PL 3150/ PL 3170 Power Line Smart Transceiver Data Book 79
Up to 255 bytes can be bi-directionally transferred at a time. This I/O model depends on interrupts to process data at
high speed and does not use the io_in() and io_out() function calls. Once transfer is initiated, control will be
returned to the application immediately and the application will need to poll the I/O model for completion. Transfers can
be suspended and resumed by disabling and enabling interrupts. Turning off interrupts might be required when going
off-line, or for assuring that other time-critical application execution is not disturbed by background interrupts.
Additionally, transfers can also be aborted.