Spatial division switch test equipment for all electronic exchanges

摘要

The present invention relates to a circuit for checking the state of a space division switch used in an electronic exchanger, comprising: a clock selector for outputting a selection signal; A CP2D signal of 8KH applied from the clock generator, a CP2 clock of 16.384MHZ, and a CP2D signal delayed by 90from the CP2 clock, selects a CP2 clock or a CP2D clock according to the selection signal, A clock receiving unit for receiving the clock signal; A frequency divider for dividing the clock selected by the clock receiver into a first clock of 8 KHz, a second clock of 8192 KHz, and a third clock of 2048 KHz; Using the first and third clocks applied from the frequency divider, a 2048 Kbps length 2¹⁵A random data generator for generating and outputting random data of-1; A shift register for converting the random data of the random data generator in parallel according to the first load signal and outputting the data in units of 64 Kbps; A first latch for latching random data of the shift register in accordance with the first load signal and outputting the random data; A clock transmission unit receiving the random data of the first latch and applying the random data to the space division switch for testing as a call of the space division switch; A first address generator for receiving a first clock and a second clock from a frequency divider and generating and outputting a memory write address and a second load signal and being initialized by a second load signal; A second address generator for receiving a first clock and a second clock from a frequency divider and generating and outputting a read address and a second load signal; A memory for storing random data of the first latch by the first and second address signals; A data transmission unit for transmitting the random data of the shift register to the space division switch; A data receiving unit receiving the loopback data via the space division switch communication path; A comparison unit for comparing the random data, which is made available through the data receiving unit, with the random data stored in the memory, and outputting a comparison value; A latch for detecting an abnormality according to a value compared to the comparator and outputting the resu An alarm receiving unit for receiving an alarm state of the space division switch; A serial / parallel converter converting the output of the latch and alarm receiver into a serial state and outputting the serial state; And a processor matching unit for matching the output of the serial / parallel converter to the processor and applying the output to the processor.;Therefore, the random data generator of the present invention transmits random data of a plurality of channels to a space division switch, stores the random data in a memory, compares the data stored in the space division switch with data stored in the memory, The communication path of the space division switch can be accurately checked by checking the communication path of the switch.