SU970372A1

SU970372A1 - Multi-channel priority device

Info

Publication number: SU970372A1
Application number: SU813268828A
Authority: SU
Inventors: Эдуард Викторович Лысенко; Анатолий Леонидович Литвинов; Евгений Федорович Дикмаров
Original assignee: Харьковский Ордена Ленина Авиационный Институт Им.Н.Е.Жуковского
Priority date: 1981-04-02
Filing date: 1981-04-02
Publication date: 1982-10-30

Description

(54) МНОГОКАНАЛЬНОЕ ПРИОРИТЕТНОЕ УСТРОЙСТВО(54) MULTI-CHANNEL PRIORITY DEVICE

Изобретение относитс квычислительной технике и может быть использовано в системах с распределенной обработкой информации обмена ЦВМ с абонентс1Ми системы по общей магистрали .The invention relates to computing technology and can be used in systems with distributed information processing of the exchange of digital computers with subscriber systems in a common trunk.

Известно многоканальное устройство дл подключени отдельных уст« ройств к общей магистрали, состо щее из N каналов анализа запросов, каждый из которых содержит триггер запроса, выполненный на двух элементах И-НБ, элемент передачи управл ющего .сигнала , выполненный на элементе НЕ, и элемент подтверждени запроса, Btaionненный на элементе И 11.A multi-channel device is known for connecting individual devices to a common trunk consisting of N request analysis channels, each of which contains a request trigger executed on two I-NB elements, a control signal transmitting element executed on the NO element, and request confirmation, Btaionnny on the element And 11.

У этого устройства низка помехозащищенность , обусловленна по влеНИ0М ложных кратковременных импульсов На входах каналов во врем про хождени импулБса опроса и возможностью в отдельных сл рча х одновременного выхода на магистраль двух каналов.This device has low noise immunity due to false short-duration pulses. At the channel inputs during the impulse response and the possibility of simultaneous output of two channels to the trunk in separate cases.

Наиболее близким по выполн емли функци м решением к предлагаемому вл етс многоканальное устройство приоритета, содержащее.в каждом кайёше триггер запроса, триггер подтверждени запроса, линию задержки, элемент И-НЕ и элемент И f2.The closest solution to the proposed solution is a multichannel priority device, which contains in each kayoshe a request trigger, a request confirmation trigger, a delay line, an AND-HE element and an AND f2 element.

Недостатком этого устройства вл етс двухтактный режим работы, св занный с необходимостью предварительного формировани специальных сигналов дл подготовки устройства к работе перед его опросом и св занные с этим потери по быстродей10 ствию, а Факже сложность устройства.A disadvantage of this device is the push-pull mode of operation, which is associated with the need to pre-form special signals to prepare the device for operation before its interrogation and the associated loss of speed, and also the complexity of the device.

Цель изобретени - повышение быстродействи устройства и сокращение оборудовани при достаточной помехозащищенности.The purpose of the invention is to increase the speed of the device and reduce the equipment with sufficient noise immunity.

1515

Поставленна цель достигаетс тем, что в многоканальном устройстве , содержащем Nканалов каждый из которых содержит элемент ИЛИ-НЕ,элемент ИЛИ, элемент НЕ и элемент И, The goal is achieved by the fact that in a multichannel device containing N channels each of which contains an OR-NOT element, an OR element, an NOT element and an AND element,

20 вход опроса устройства соединен с первыми входами элемента ИЛИ-НЕ и элемента ИЛИ первого канала,первый вход элемента И каждого канала соединен с соответствующим информационным 20 the polling input of the device is connected to the first inputs of the OR-NOT element and the OR element of the first channel, the first input of the AND element of each channel is connected to the corresponding information

25 входом устройства, в каждом канале выход элемента И соединен с вторым входом элемента ИЛИ и через элемент НЕ с вторым входом элемента ИЛИ-НЕ своего канала, выход элемента ИЛИ-НЕ 25 input device, in each channel the output element AND is connected to the second input element OR through the element NOT to the second input element OR NOT your channel, the output element OR NOT

Claims

30 of each channel is connected to the corresponding output of the device, the output of the OR element i-ro (... N-1) of the channel is connected to the second input of the element AND the i-ro channel and to the first inputs of the OR element NOT and the element OR Ci + 1) - ro channel, the output element OR the N-ro channel is connected to the second input element AND its channel. The goal is achieved through a one-shot mode of operation, with the OR-NOT element being used as an element to confirm a request. The drawing shows a functional diagram of the device, containing the element AND 1, the element NOT 2, the element OR-NOT 3, the element OR 4, the information input 5 of the channel, the output 6 of the channel input 7 polling the device, channels 8 ... 8 (device vi. Device works as follows: In the initial state, at the input of the polling circuit there is a signal of a logical unit, at outputs 6 there is a logical zero signal. When a signal from the i-ro source arrives, the output of the And .1 element generates a signal L the second input of the element OR 4 and in one element NOT 2, on the trick of which a signal zero is generated, arriving at the second input of the element OR NOT 3. When a polling signal arrives at input 7 as a logical zero, it n spreads along the oprbs circuit to the i-ro channel through the elements OR 4, at the same time prohibiting the passage of newly received requests from sources with a higher priority, by sending a logical zero signal to the second input of the AND-1 element, which ensures noise immunity. With the filing of a polling signal at the first input of the element OR-NOT 3 in the i-M channel, a logical unit signal appears on the output channel b of the channel. Removing the polling signal from input 7 i brings the device back to its original state. If several informational signals are received at the same time, the signal with the highest priority through the AND 1 element and the OR 4 element blocks the passage of the polling pulse to the low priority channels. In this device, the survey is performed in one cycle, so it is at least twice as fast as the prototype. The device has the same complexity with the prototype on the combinational component, but simpler in terms of the trigger, and as a result, the complexity of this device is simpler than the prototype. Multi-channel priority device containing N channels, each of which contains an OR-NOT element, an OR element, an NOT element, and an AND element, different from the fact that, in order to improve speed and reduce equipment, the device's polling input is connected to the first inputs the element OR NOT and the element OR of the first channel, the first input of the element AND of each channel is connected to the corresponding information input of the device, in each channel the output of the element AND is connected to the second input of the element OR and through the element NOT to the second the input of an OR-NOT element of its own channel, the output of the OR-NOT element of each channel is connected to the corresponding output of the device, the output of the OR element of the i-ro (i-1 ... N-1) channel is connected to the second input of the AND element of the i-ro channel and with the first inputs of the element OR-NOT and the element () -ro of the channel, the output of the element OR the N-ro channel is connected to the second input of the element AND of its channel. Sources of information taken into account in the examination 1. The author's certificate of the USSR 544967, cl. G About F 9/46, 1974.

2. USSR author's certificate number 746519, cl. G About F 9/46, 1977 (prototype).