SU1462329A1 - Device for interfacing two trunk lines - Google Patents

Abstract

) The invention relates to computing TextMKe and can be used to expand the number of external devices connected to computers in distributed computing systems. The aim of the invention is to expand the scope. The device contains a group of information and trunk transceivers, three synchronization transceivers, a switch, three NOT elements, And element, a block of terminating resistors. 2 Il.

Description

I

The invention relates to computing and can be used to expand the number of external devices connected to computers in distributed computing systems.

The aim of the invention is to expand the scope.

Figure 1 shows the functional diagram of the device; Fig. 2 illustrates an example of the use of the proposed device in a distributed computing system when using a backbone parallel interface.

The device contains a group of information trunk transceivers 1-4 connected to information buses 5 of the first highway and information buses 6 of the second highway, trunk transceivers 7–9 of synchronization connected to buses 10 of synchronization of the first highway and buses 11 of synchronization of the second highway. The device also includes a switch 12, elements NOT 13-15, element AND 16, block 17 terminating resistors. Fig. 1 denotes an input 18 for selecting the direction of operation of the device. Depending on the . the location of the device in the system (Fig. 2), the input 18 can be supplied with a zero or a single signal. If the computer is located on the side of the first highway (P), then a single signal is fed to the input 18. If the computer is located on the side of the second highway (Q), then zero signal is fed to the input 18.

Consider the operation of the device when the computer is connected to the first line.

When information is transmitted from a computer to external devices (WU), a passive single signal Input is received via the first synchronization bus of the first highway, which is transmitted to input B1 of switch 12 and then through element 16 to the first inputs of control

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3 1462329

(VC) transceivers 1–4, allowing the transmission direction from the inputs to work, are enabled. In addition, the signal from V-V to the outputs C of transceivers of travel B of switch 12 is fed at 1-4. Since the switching of the transceiver input C and output C appears from the transmitter -4, occurs from a certain single signal, coming to the second delay relative to the front ry control inputs (SW) of the transceiver-edge of the response synchronization signal, sensors 1-4 , determine the direction of the signal passing through the transmission of information from the inputs A to the switch 12, the element is NOT 13, the element moves B, i.e. information by device-I 16 and switching time is received from the computer via information transmitters 1-4, while the signals (address, data) are first magistrate, the response is synchronized from WU to computer rali (P5) through transceivers 1 -4 passes only through the transceiver, the information pshny second magist-chik 9, then there may be a violation (Q6). In this way, the address VU15 of the time relationship between the signals or data transmitted from the computer to the VU. Therefore, for reliable operation. When you enter data: x, the first delay of the synchronous computer signal is generated on the first response synchronization bus by means of transceiving and reshaping the input signal that has a sensor 9. The synchronization signal is the remote level. This signal passes through 20 veta passes through three channels receiving transceiver 7 of synchronization-transmitter 9 of the computer, having received the signal on the first bus for auto-synchronization of the response from the slave and the data of the trunk (Q.11), as well as the post from it , removes the input signal, goes off to the B1 input of the switch 12, so that WU removes the synchronization signal leads to the formation of a response at its output25. The device goes to the output- In a single signal. In this moment state. When the computer is located, the response signal on the second bus is synchronous with respect to the device from the side of the nization (the CIP signal) has a single second line to the control zero level, so the output of Avkhit 18 is zero, when the zero signal is generated, and This changes the direction of the transfer of the HE 13 element to the unit. Ta signals on synchronization pins, in particular, on both inputs, the mutant 12 transmits signals, supplied 16 and two single signals, input to A2, B2, C2, are changed, therefore, at the control input, the transceiver transceiver control signals - one-to-one transmitter 1-4

a single signal translating transceiver-A table shows the state

Sensors in high impedance state - control signals, as well as signaling at the outputs. At the same time, the signals generated to control the gain of output B of switch 12 are transmitted by transmitters 1-4 and directed before its input CI to output C and the post-to-Redaci information.

Claims (1)

It is the zero level at the input of the UV control formula of the invention of the transceiver 1-4. Woo to which the device is mapped, the device for conjugating two mothers to the synchronization signal (Input), the trunk that contains the information group sets on the data buses of the 45 Dionny trunk transceivers and generates a synchro- nal signal, two response transceivers (SIPs). The synchronization signal of the synchronization sensor and the response negotiation block informs the computer that the WUT resistors, and the information inputs on the information buses, the third inputs of the information are trunk data. This signal has null-gg transceivers of the group of co-operational levels and, on the second bus, si-nen respectively with its information synchronization of the second highway (Q11), the mapping outputs and are input to the B1 input of the transceiver by the home-output of the device for connecting and transmitting them to the second bus - nor to the information buses of the first mahronization of the first highway (P10), gistrali, informational inputs-outputs also to the input A1 of the switch 12, the informational lines of information highways at the Zero level at the inputs x VK are permitted by the group transmitters The transceivers 1-4 are in operation, the device dami outputs for connecting the zero signal at the control inputs to the information buses of the second highway, the information inputs of the first and second synchronization trunk transceivers are connected to their information outputs and are connecting to the first and second synchronization buses of the first highway, the information inputs / outputs of the first and second synchronization transceivers are input-output devices for connecting to the first and second synchronization buses of the second highway, the first control inputs of the first and second synchronization main transceivers are connected to the zero potential bus of the device, and the terminating resistor unit contains 1462329 the second information input-output of the third synchronization trunk transceiver is the input-output of the device for connecting the second trunk to the interrupt request bus; the first information input of the third synchronization trunk transceiver is combined d with its information output and is the input-output of the device for connecting the first trunk interrupt request bus, the first output of the switch is NOT connected to the first input of the element AND, the second output of the switch is connected to the second input of the element AND the fifth information input of the switch and through the second element is NOT with the sixth ingit pairwise connected in series 2 by the Formational input of the switch, you thirty By the number of information buses and synchronization buses of the second line, each pair of resistors combined leads are connected to the corresponding inputs-outputs of the information trunk group transceivers and two main clock transceivers, and multiple terminals of each pair of resistors are connected respectively to the zero potential bus and a power bus, characterized in that, in order to expand the field of application, a device has been inserted into the device. the third synchronization trunk transceiver, a switch, three NOT elements and an I element are given, with the information outputs of the first and second synchronization transceivers being connected respectively to the first and second information inputs of the switch, the third information input of which is connected to the information input output the first trunk transceiver, synchronization, the fourth information input of the switch is connected to the information input / output of the second trunk synchronization transmitter and with the first information input-output of the third trunk transceiver synchronization. 50 the element stroke I is connected to the first control inputs of the rjiynpy information trunk transceivers, the second control inputs of which are connected to the third, the switch output, the second control inputs of the first and second synchronization trunk transceivers, and the input of the third element are NOT combined and the output of the third element is NOT connected to the first control input of the third synchronization trunk transceiver, the second control input of which is connected En with the zero potential bus, the second information input, the second information output of the third synchronization main transceiver are combined and connected to the combined information input and output of the second synchronization main transceiver, the third information input / output of the third synchronization main transceiver is connected to its third information input and output fourth information input and output of the third synchronization trunk transceiver are connected with the fourth information output of the same transceiver. 1462329 the second information input-output of the third synchronization trunk transceiver is the input-output of the device for connecting the second trunk to the interrupt request bus; the first information input of the third synchronization trunk transceiver is combined with its information output and is the input-output of the device for connecting the first trunk interrupt request bus, the first output of the switch is NOT connected to the first input of the AND element through the first element, the second switch output is connected to the second input of the AND element, the fifth information input of the switch and through the second element is NOT with the sixth in25 thirty lp 0 the element stroke I is connected to the first control inputs of the rjiynpy information trunk transceivers, the second control inputs of which are connected to the third, the switch output, the second control inputs of the first and second synchronization trunk transceivers, and the input of the third element are NOT combined and the output of the third element is NOT connected to the first control input of the third synchronization trunk transceiver, the second control input of which is connected En with the zero potential bus, the second information input, the second information output of the third synchronization main transceiver are combined and connected to the combined information input and output of the second synchronization main transceiver, the third information input / output of the third synchronization main transceiver is connected to its third information input and output fourth information input and output of the third synchronization trunk transceiver are connected with the fourth information output of the same transceiver.  Shine Sh S P Fe / e.2