Suitable for spacecraft telemetry encryption system ctu

Encryption system suitable for use in spacecraft telemetry CTU, comprising interface processing module, a telemetry information processing module, a telemetry encryption module. Interface processing module is used for internal and external switching signal, a parallel address from the external CPU, the write control signal according to adjust the bidirectional parallel data signal for data writing and reading. Telemetry encryption module in accordance with the input synchronizing signal, the data format parsing, generating encrypted data, the encrypted data framing and telemetry information and outputs it to the serial conversion processing module. Telemetry information processing module according to the state of the timer, the telemetry timing generating an interrupt signal; parallel data input spliced ​​data is adjusted to the other modules can accept data format; clear state to the parallel data to serial conversion outputted; The telemetry data setting signal selects the output of the plain and clear state output density data or state data, a serial output telemetry data and output to the outside after encoding.