INTERFACE METHOD FOR PROCESSING FREQUENCY SHIFT KEYING PROTOCOL IN TDX

摘要

PURPOSE: An interface method for processing an FSK(Frequency Shift Keying) protocol in a TDX is provided to enable interface between an FSKA board and a PP(Peripheral Processor) via a TD-bus, by using a running flag in a DRRAM and a signal of an interrupt area. CONSTITUTION: A status of the FSKA board is read periodically in order to enable interface between the PP and FSKA, and thereby it is determined whether the PP can read data from an FSK device. If the data can be read from the FSK device, it is checked whether an interrupt is generated, wherein the interrupt informs that the data can be read and written. When the interrupt is generated, FSK data are transmitted to the TD-bus.