SU960820A2

SU960820A2 - Multi-channel device for priority-based pulse selection

Info

Publication number: SU960820A2
Application number: SU813285478A
Authority: SU
Inventors: Валерий Семенович Чернышев
Original assignee: Предприятие П/Я А-7292
Priority date: 1981-02-25
Filing date: 1981-02-25
Publication date: 1982-09-23

Description

С54У МНОГОКАНАЛЬНОЕ УСТРОЙСТВО ДЛЯ ПРИОРИТЕТНОЙ СЕЛЕКЦИИ ИМПУЛЬСОВS54U MULTICHANNEL DEVICE FOR PRIORITY SELECTION OF PULSES

Изобретение относитс к вычислительной технике, в частности к устройствам приоритетной селекции импульсов, и может быть применено дл управлени доступом к используемому ресурсу.The invention relates to computing, in particular, devices for the priority selection of pulses, and can be applied to control access to a used resource.

По основному авт.св. № 699522 известно многоканальное устройство дл приоритетной селекции импульсов, содержащее элемент НЕ, а в каждом канале - два триггера и четыре элемента И, запросные входы и выходы, тактовый вход и выход 1.According to the main auth. No. 699522, a multichannel device for the priority selection of pulses is known, which contains an element NOT, and in each channel there are two triggers and four elements AND, query inputs and outputs, a clock input and output 1.

Однако данное устройство вырабатывает -один импульс (положительна фаза сигнала из периода т основной синхронизирующей частоты, поступающей на тактовый вход устройства) на каждый импульс запроса.However, this device generates a single pulse (the positive phase of the signal from the period t of the main clock frequency arriving at the clock input of the device) for each request pulse.

Прив зка вспомогательных сигналов управлени к основному положительному сигналу синхронизирующей частоты в пределах одного периода Т требует создани дополнительных схем управлени , что приводит к снижению быстродействи , надежности устройства , а также к непроизводительным затратам оборудовани и времени проектировани .The attachment of auxiliary control signals to the main positive signal of the synchronization frequency within one period T requires the creation of additional control circuits, which leads to a decrease in the speed and reliability of the device, as well as to an overhead of equipment and design time.

Цель изобретени - повышение надежности , расширение функциональныхThe purpose of the invention is to increase reliability, expand functional

возможностей устройства за счет формировани двойных сигналов, а в пределах одного периода тактовой частоты на каждый поступан ций запрос.capabilities of the device due to the formation of double signals, and within one cycle of the clock frequency for each incoming request.

Поставленна цель достигаетс -гек, что в каждый канал дополнительно введены третий триггер, п тый и шестой элементы И, причем в каждом канале единичный вход третьего тригге10 ра соединен с разрешающим выходом устройства, а нулевой вход третьего триггера - с выходом п того элемента И, входы которого соответственно соединены с нулевым выходом второго тригts гера и тактовым входом устройства, а единичный выход третьего триггера с первым входом шестого элемента И, второй вход которого подсоединен к выходу элемента НЕ, нулевой и единич20 ный выходы третьего триггера и выход шестого элемента И вл ютс дополнительными разрешающими выходами устройства соответств ющего канала.The goal is achieved by -heck that a third trigger, the fifth and sixth AND elements are additionally inserted into each channel, and in each channel the single input of the third trigger is connected to the device's resolving output, and the zero input of the third trigger the inputs of which are respectively connected to the zero output of the second trigger and the clock input of the device, and the single output of the third trigger to the first input of the sixth And element, the second input of which is connected to the output of the HE element, zero and one the outputs of the third trigger and the output of the sixth And element are additional enabling outputs of the device of the corresponding channel.

На чертеже представлена структур25 на схема устройства.The drawing shows structures25 on the device diagram.

Многоканальное устройство дл приоритетной селекции импульсов содержит тоиггеры 1 и 2, элементы И 3-8, триггер 9, вход щие в состав каналов A multichannel device for priority pulse selection contains toiggers 1 and 2, elements AND 3-8, trigger 9, which are part of the channels.

Claims

30 10-12, element NO 13, query inputs 14-16, enabling outputs 17-28 clock input 29 and output 30. The device works as follows. Before starting work, the reset inputs (Ike are shown) of the 1.2 and 9 triggers of channels 10-12 receive a reset pulse and sets the triggers 1, 2 and 9 to the initial-zero state. A continuous transfer circuit is formed (if the inputs 14-16 do not enter no impulse request) and synchronization pulses from input 29 through. element 3 of each of channels 1416 to output 30 of the device. If, for example, a request signal arrives at input 14, which ensures reliable flip-flop of trigger 1 of channel 14, then it is paused (before the synchronization pulse) through element And 6 of this channel it is written to the trigger

2. The latter prepares element 4 for opening and blocks elements 3 and 7 of channel 14. Next, the first positive synchronization pulse arrives at output 20, the zero input of trigger 1 and the single input of trigger 9, sets trigger 1 to the zero state, and the trigger 9 - into a single state, which prepares element 8 for opening; 8. In pause, trigger 2 channel-14 and returns to the initial zero & state, preparing elements for opening and opening 7, and at output 19 of the channel 14 device a positive impulse of synchroserie appears, tion phase. The second and subsequent round-up pulses from the output of element I 3 arrive at the inputs of the elements I and 4 of channel 15 as a synchronizing switch which differs from the previous (input) by the absence of only one pulse (first) selected at output 20, and the zero input of trigger 9 through the element And 7 - as reset pulses to the zero state, forming a negative signal (output 17) and a positive (output 18) phase, defining the period T. Thus, the device generates a double for each request pulse. signal within one synchronization period, which expands the functionality and improves the reliability of the device. Claims of the invention. A multichannel device for direct pulse selection according to the author. No. 699522, that is, so that, in order to increase the reliability of the device, a third flip-flop, a sixth and sixth AND elements are added to each channel, and in each channel the single input of the third flip-flop is connected to the output of the device, the zero input of the third trigger - with the output of the fifth element I, whose inputs are respectively connected to the zero output of the second trigger and the clock input of the device, and the single output of the third trigger - with the first input of the sixth element And, the second input of which is connected to the output by the element The NOT, zero and single outputs of the third flip-flop, the output of the sixth And element are additional enabling outputs of the device of the corresponding channel. Sources of information taken into account in the examination 1.. USSR author's certificate number 699522, cl. G 06 F 9/46, 1978 (prototype).

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