H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
354/232, 344/29
H04Q 3/54 (2006.01) G06F 9/22 (2006.01) H04Q 3/545 (2006.01)
Patent
CA 1052463
ABSTRACT OF THE DISCLOSURE A Stored Program Controlled telecommunication system comprises test points, operating points,data storage registers connected to each other through a data bus, a phase generator and an access signal generator. The registers include instruction registers for storage of instructions, and an address register for storage of address numbers identifying the instructions. The address register is provided with a stepping input for raising its content with one unit. The phase generator produces phase signals by which the processing cycles of the instructions are divided into phases. The access signal generator is controlled by the phase signal, the address numbers and the instructions. For producing access signals in order to control the test points, operating points and registers, the access signal generator includes logic arrangements. A first logic decodes the content of the address register during the beginning phase of the respective cycle and accesses the instruction register associated with the respective address number during the other phases of the cycle. A second logic activates the stepping input during a middle phase of each cycle. A third logic allows transfer of an address number from one of the registers to the address register only during the end phase of the respective cycle. A fourth logic carrying out an AND-function has its inputs activated during the end phase of a cycle for accessing one of the test points and by the one binary state of this test point, and its output connected to the stepping input.
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