SU1476453A1 - Asynchronous signal reception synchronizer - Google Patents

Abstract

The invention relates to computing and can be used in devices for coupling external asynchronous signals to clock pulses. A distinctive feature of the device is that there is no limit on the duration of the input and synchronous pulses. The aim of the invention is to increase speed. The goal is achieved by introducing an asynchronous signal of delay element 6 into each receiving unit 2, connecting trigger 5 to trigger 7, and connecting block 2 to the distributor 1 pulses. 1 il.

Description

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The invention relates to computing and can be used in devices for coupling external asynchronous pulses to sync pulses.

The aim of the invention is to increase speed.

The drawing shows a diagram of the proposed device.

The device contains a distributor of 1 pulses, blocks 2.1, ..., 2.p of receiving an asynchronous signal, inputs 3.1, ..., Z.p of asynchronous signals, you

moves 4.14.p devices. Each

the asynchronous signal receiving unit 2 comprises a trigger 5, a delay element 6, a trigger 7.

The device works as follows.

In the initial state, the triggers 5 and 7 of all blocks 2.1.2.2, ..., 2.n. are in the zero position. The magnitude of the delay I of elements 6 must be equal to the duration of the front of the pulses delivered by the distributor 1 of the pulses such that by the time of the appearance of the pulse at the output of element 6 trigger 7 is unlocked at the reset input in O.

The drawing shows an example of the device, in which the triggers 5 and 7 on synchronous inputs operate from the drops of 0-1 pulses arriving at these inputs, on asynchronous inputs the reset is set to the zero position by the zero signal.

When an asynchronous signal arrives at one of the inputs 3.1, ..., 3.p

for example 3.1 on the leading edge it

pulse is set to one position trigger 5 of the first block 2.1.

When the first pulse emerges from the output of the pulse distributor 1, the operation of the trigger 7 is enabled in synchronization and the delay element 6 of this block 2.1 is started.

After time and on the leading edge of the pulse from the output of the delay element 6, the trigger 7 of the block 2.1 is set to one. At output 4.1, a signal appears from the direct output of flip-flop 7, simultaneously due to the appearance of a zero signal at the inverse output of flip-flop 7, the flip-flop 5 of block 2.1 is set to zero. At the end of the pulse at the first output of the

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limiter 1 pulse trigger 7 is set to the zero position. Input 4.1 terminates a pulse. The device is installed in its original state.

Thus, at the output 4.1 (corresponding to the input 3.1), a pulse is issued, synchronous to the pulse issued by the distributor 1 pulses

and equal in duration t

Where

t v - the duration of the pulses delivered to the outputs of the distributor 1 pulses.

When pulses are received at other Inputs, the device operates in the same way.

When pulses are received at the inputs 3.1.3.2, .., 3.p simultaneously or with an interval shorter than, where T0 1 / f0, the triggers of 5 blocks 2.1, 2.2 are set to one position

2, n at the inputs 3.1, 3.2, ..., Z. p which received pulses. The device, however, successively in time, gives pulses to the output 4.1,4.2, ..., 4.p.

Thus, if, when the power is turned on, the triggers 5 and 7 of any blocks 2 are set to a single position, then the device is reset to the initial state without a special impulse.

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Claims (1)

Invention Formula A device for synchronizing reception of asynchronous signals containing a pulse distributor, n blocks of receiving asynchronous signals, where n is the number of channels, each block of receiving asynchronous signals contains two flip-flops, a direct output of the first flip-flop is connected to an information input of the second flip-flop, the inverse output of which is connected to the reset input of the first trigger 0, characterized in that, in order to increase the speed of the device, in each block of receiving asynchronous signals a delay element is inserted, which synchronizes the inputs the first trip blocks of the first to the nth asynchronous signaling receive units are respectively the inputs from the first to the nth asynchronous signals of the device, the information inputs of the first triggers of all the receiving blocks of the asynchronous signals are combined and connected to the bus of the unit potential of the pulse distributor from 314764534 the first to the nth is connected to the inputs connected to the synchronous input of the second delay elements and reset-trigger inputs, direct outputs of the second trigger in O of the second trigger of the corresponding blocks from the first to the n-th reception of the asynchronous sig-asynchronous signals are the ratios, the output of the delay element in each output from the first to home unit receiving asynchronous signal-n-th device.