SU1179352A1 - Interface for linking input/output channels with peripheral equipment - Google Patents

Abstract

A DEVICE FOR PAIRING INPUT-OUTPUT CHANNELS WITH EXTERNAL DEVICES, containing To communication units with a channel and a communication unit with external devices, each communication unit with a channel containing a receiver node, a transmitter node, and a sample signal broadcasting node, and with external devices contains a node of transmitters and a node of receivers, while the inputs of the nodes of the receivers of each communication unit with the channel form the information inputs of the device from the I / O channels, and the input of the node of the receivers of the communication unit with external devices Forms the information input of the device from external devices, the outputs of the transmitter nodes of each communication unit with the channel form the information outputs of the device to the input and output channels, and the output of the transmitter node of the communication unit with external devices forms the information output of the device to external devices connection with external devices is connected to a group of information inputs of transmitter nodes in K communication units with channels and with a corresponding group of inputs of a sample of translation nodes of C drove the samples in the Q. communication units with the channel, the output groups of the receiver nodes in the / C communication units with the channel are connected to the group of information inputs of the transmitter node in the communication unit with external devices, and in each communication unit with the channel the corresponding output of the node the receivers are connected to the sample input of the sample signal translation node, the first output of which is connected to the corresponding input of the transmitter node, characterized in that, in order to improve performance by increasing the number of external devices connected With no increase in the propagation time of the sampling signal, M-1 (M is the number of external devices) of communication units with external devices are entered into it, and in each communication unit with a channel a sample signal generation unit, a switching node and a sample control node are entered, The inputs of the receiver nodes and the outputs of the transmitter nodes in M-1 blocks of communication with external devices form the M-1 information inputs and outputs of the device from external devices, respectively, the output groups of the receiver nodes in M-1 blocks of communication with external devices by devices connected to groups of information inputs of transmitter nodes in K blocks of communication with a channel and with corresponding groups of inputs of a sample of nodes of broadcast signal of a sample of I / C blocks of communication with a channel; groups of outputs of nodes of receivers of I / C communication blocks with channels a group of information inputs of transmitters in M-1 communication units with external devices, groups that allow connecting inputs of transmitter nodes in M communication units with external devices and K. communication channels with channels connected to the corresponding outputs Sample control nodes / C of communication units with a channel, groups of control outputs of signal sequencing units K of communication blocks with channels connected to the corresponding inputs of transmitter nodes M of communication blocks with external devices, groups of corresponding outputs of receiver nodes M of communication blocks with external devices are connected to groups of control inputs of sampling control nodes / C of communication units with channels, with in each communication unit with a channel a group of outputs of a com

Description

the mutation is connected to the group of permitting inputs of the sampling control node, the output group of which is connected to the enabling inputs of the broadcast node of the sampling signal, the second output of which is connected to the enabling input of the signal sequencer node, the group of control inputs of which is connected to the corresponding outputs of the receiver node, the corresponding outputs which is connected to the group of address inputs of the sampling control node, while the sampling control node contains an address decryptor, M sampling nodes and an M-1 node priority, each sample node contains two OR elements and four AND elements, and each priority node contains an AND element and an OR NONE element, and the addresses of the address decoder and the first inputs of the first AND elements of the sample nodes form the group of address inputs of the sample control node , the first inputs of the second elements I of each sample node are connected to the first inputs of the AND element of the corresponding priority node, up to (M-1) -th, and together with the first input of the second element AND the M-th sample node and the first inputs of the first elements OR M y Evil samples form a group of control inputs of the sample control node; the first inputs of the third element AND of each sample node are connected to the second inputs of the AND element of the corresponding priority node, up to (M-1) -th, and together with the first input

of the third element and the Mth sample node form a group of permitting inputs of the sample control node, M-1 inputs of the fourth element AND each sample node are connected to the outputs of the third element AND all other M-1 sample nodes and together with the outputs of the third element And their sample node form a group of outputs of the sampling control node, the outputs of the address decoder are connected to the corresponding inputs of the second OR elements, and M in each sampling node, each output node of the second OR element is connected to the second input of the first element a AND, the output of which is connected to the second input of the first element OR, the output of which is connected to the second input of the third element AND, the output of the fourth element AND connected to the second input of the second element AND, the output of which is connected to the third input of the first element OR, the output of the element OR NOT each rth (/, ..., M-1) priority node is connected to the third input of the second element AND each (/ + 1) -th sample node and the first input of the OR OR NOT element of each () -ro priority node, the output of the element OR NOT (M-1) -th priority node is connected to the third input of the second element And the M-th node of the sample, while in each priority node the output of the element AND is connected to the second input of the element OR NOT, the first input of which in the first priority node is connected to the pin of the unit potential of the device.

one

The invention relates to computing and can be used in multi-machine computing systems for interfacing external devices (IUs) with input / output channels.

The purpose of the invention is to increase productivity by increasing the number of external devices without increasing the propagation time of the sample signal.

FIG. 1 shows a block diagram of the device; in fig. 2 shows connection options for a device in a computing system; in fig. 3 is a diagram of the sample control node; in fig. 4 shows a sample signal translation scheme; in fig. 5 is a diagram of a signal sequencing assembly; in fig. 6 is a diagram of a node of data transmitters to a channel; in fig. 7 is a diagram of the node of data transmitters in the IT; in fig. 8 is a timing diagram of the operation of the sample signal generation unit.

The proposed device (Fig. 1) consists of K communication units 1 with a channel and M communication units 2 with external devices. Each block 1 contains a node 3 of receivers, a node 4 of transmitters, a node 5 of broadcasting a signal of a sample, a node 6 of forming a sequence of signals of a sample, a node 7 of switching, a node 8 of controlling a sample. Each unit 2 contains a node of 9 transmitters

and node 10 receivers. In addition, the device has a group of channel I / O 11, a group of I / O 12 external devices, the communication line 13-18. With help in the moves-outputs 11 (fig. 1) the device is connected to the corresponding input-output channels. Inputs-outputs 12 are used to connect the slaves of the respective directions of the additional input-output interface (Fig. 2).

Sampling control node 8 (FIG. 3) contains M sampling nodes 19, decipher

20 addresses, (M-1) priority nodes 21. Each priority node 21 contains AND 22 and OR-NOT 23 elements. Each sampling node 19 contains an OR element 24 for identifying the addresses of the slaves of an additional I / O interface, to the inputs of which are those of the decoder 20 that correspond to the addresses of the slaves connected to this direction , And 25, having (M-1) inverse inputs, to which signals of connecting the channel to WU directions from AND elements of the remaining nodes 19 are received, as well as elements 26, and 27, OR 28 and And 29.

The node 5 of the broadcast signal sampling (Fig. 4) contains the element OR 30 on the M inputs, which receive signals connecting all directions WU from all the nodes 19 of the node 8, the element NOT 31, the M elements And 32, the element 33 and the element OR 34 on (Af-4-l) inputs.

The node 6 of the formation of the sequence of signals of the sample (Fig. 5) contains the first, second and third elements 35-37 delay, the first 38, the second 39 and the third 40 elements I.

The node 4 of the data transmitters in the channel (Fig. 6) contains a group of amplifier nodes 41 (by the number of I / O interface signals from the subscriber). Each node 41 contains M elements And 42, the element OR 43 on the M inputs and the amplifier-transmitter 44.

Node 9 of data transmitters in the direction of WU (Fig. 7) contains a group of nodes of amplifiers 45 (by the number of I / O interface signals from the channel). Each node 45 contains / C elements And 46, the element OR 47 on the K inputs and the amplifier transmitter 48.

Nodes 3 and 10 are the I / O interface signal receiver amplifiers from the channel and from the WU direction (by the number of I / O interface signals from the channel and from the subscriber).

Each switching unit 7 of block 1 contains a switching field according to the number of directions of the VU in additional input-output interfaces, each switching element has two states: one and zero. A single state means the resolution, zero - prohibiting the operation of this ESC with the corresponding direction of the slave of additional input / output interfaces.

The device works as follows.

In the initial state, all channels are unmuted, i.e., there is no resolution of the I / O interface signal transmission between the I / O channels and the slaves of the additional I / O interfaces.

The connection of the SSC to the VU of any direction of the additional input / output interface is carried out in two stages.

At the first stage, additional I / O interfaces (WU directions) are distributed between the EBC using the switches of node 7 (Fig. 1). Any KVV connected to the device can distribute one, two or more WU directions, and the same WU direction should not be simultaneously distributed to two or more KVV.

The signal from the switch output permits or denies the connection of the SSC to the corresponding additional I / O interface depending on the distribution made. This signal arrives at the first input of the element AND 29 (Fig. 3). At the second stage, the channel is directly connected to the slave of additional interfaces distributed at the 5th first stage.

It is possible to connect KVV either at the initiative of KVV (during the initial sampling signal sequence) or at the initiative of the VU with additional I / O interfaces if there is a requirement to service the TRB-A signal during the sequence of signals input by the external device control unit.

During the sequence of signals 5 of the initial sample, the address of the slave from the KVV along the circuit: input line 11 - node 3 - line 13 (Fig. 1) is fed to the address input of node 8 of the same block, in which it is decrypted by decoder 20 (Fig. 3) . The decoder 20 has as many outputs as WU 0 is connected to additional I / O interfaces. The outputs of the decoder 20 in accordance with the addresses of the WU is fed to the inputs of the elements OR 24 node 19, and the inputs of the elements OR 24 of the first node 19 receives those outputs of the decoder 20, 5 which correspond to the addresses of the WU connected to the first direction. The inputs of the OR 24 of the second node 19 receive those outputs of the decoder 20, which correspond to the addresses of the slave connected to the Q second direction, etc. The output of the OR element 24 of each node 19 is vented by the address identification signal from the channel (ADR-K). As a result, at the output of the element AND 26 of only one node 19, there is a single potential, which 5 along the circuit OR 28-I 29 generates a signal to enable the connection of the KVV to the corresponding additional input-output interface. In this case, it is necessary to fulfill the condition according to which, at the first distribution stage, work with this additional interface is allowed (input signals from the outputs of the switches of the node 7 to the first inputs of the And 29 element of the node 19).

In the presence of a signal for enabling the connection of an ISC to any additional input / output interface (a signal from an output of an element OR 30 of node 5), the node 6 of block 1 (Fig. 1) forms a timing diagram of the ADR-K signals (output of element 38, fig. 5) , RVB-K (output of the element I 39, fig. 5) and VBR-K (output of the element I 40, fig. 5). FIG. 8 shows a time diagram of the operation of node 6. Signals from the outputs of elements 38-40 (fig. 5) of node 6, together with signals from the output of node 3 of block 1 (fig. 1), go to nodes 9 of all blocks 2 to the first inputs of the corresponding elements And 46 (Fig. 7); from the first KVV to the first element And 46; from the second KVV to the second element I 46, etc., from the K-th KVV to the / C-th element I 46. However, these signals are directed only to the direction of the VU of the additional I / O interface, for which broadcast resolution signals are generated. These signals arrive at the first inputs of the respective nodes 9 of the blocks 2 (Fig. 1), at the second inputs of the elements And 46 of the nodes 45 (Fig. 7). From this point on, the initial sample signal sequence begins to be translated into the corresponding additional interface of the VU, to which the VU responds by generating a subscriber operation signal (RAB-A), which, like all subsequent signals from the VU, along the circuit: Input line 12 - node 10 of block 2, on line 16, they go to the inputs of nodes 4 of all blocks 1 to the first inputs of the corresponding elements AND 42 from the first-order control unit to the first element 42 and from the second-direction control unit to the second element 42 and so on, from the control unit yW-ro Directions - on the M-th element And 42. These signals are sent only to the EIR for which the broadcast resolution signal is generated. The resolution signal is fed to the first input of the corresponding node 4 of block 1 (Fig. 1), to the second input of the And element 42 of groups 41 (Fig. 6), and the signal to enable the transmission of signals between the EBC and the first direction input goes to the second input of the first element And 42, between KVV and VU of the second direction - to the second input of the second element I 42, etc. between the KVV and VU yVf-ro direction - to the second input of the M-th element 42. In addition, the signal RAB-A from VU of the selected the direction arrives at the first input of the element OR 28 of the corresponding node 19 (FIG. 3), and Aleny - to the input of the element OR 28 of the first node 19, from the secondary substation WU to the input of the element OR 28 of the second node 19, etc., from the MU of the Mth direction to the input of the element OR 28 Mth node 19. As a result This signal for transmitting signals from the corresponding KVV to the selected direction is maintained by the signal RAB-A at the inputs of the corresponding nodes 4 of block 1 and 9 and block 2 (fig. 1) until the input-output operation initiated by the KVV is completed.

During the sequence of signals initiated by the DCU, the signal is the demand for service from the control unit of any direction (TRB-A) along the circuit: input line 12 - node 10 of block 2 - line 16, through all lines 14 is fed to the control input of all nodes 8 of blocks 1 (fig. at the first input of the element AND 27 of the corresponding node 19 (fig. 3), elements OR 28 and AND 29 produce a broadcast resolution signal, and the TRB-A from the first-order slave enters the input of the element And 27 of the first node 19, the TRB-A from the second-largest secondary unit - to the input of the element of the second node 19, and so on. TRB-A from the second-largest unit th direction - to the input of the element of the M-th node 19. The signal of the signal transmission resolution between the EBC and the selected direction is vented by the signal from the output of the node 7. This signal goes to the first input of the And 29 element of the node 19 of the node 8 (Fig. 3) , the output of the switch providing the operation (blocking of operation) of the IWC with the first direction is fed to the input of the element I 29 of the first node 19, the CWB with the second direction to the input of the element I 29 of the second node, etc. to the input element AND 29 M th node (the position of the switch is determined by in the first stage, the allocation of additional interfaces between the ESCs). If there are several TRB-A signals from different directions WU is serviced (signal is generated signal transmission between KVV and WU) WU with the highest priority, which is provided by the signal priority node organized by (M-1) nodes 21 (Fig. 3). The first inputs of elements AND 22 of each node 21 of node 8 (Fig. 3) receive signals from the TRB-A from all additional interfaces (directions), and the signal from the first direction signal goes to element 22 of the first node 21, and element 22 of the second node 21 - from the second-direction control unit of the second direction, etc., to the AND 22 (M-1) node element - from the control unit of the (M-1) -th direction. The second inputs of the elements AND 22 of all priority nodes 21 receive signals from the outputs of the node switch 7 (distribution at the first stage of additional input-output interfaces). In this case, the output of the switch, which ensures the operation (blocking of work) of the IWC with the first direction, enters the input of the element I 22 of the first node 21, the IAC with the second direction - the second node 21, etc. The IAC with the (M-1) th direction - (M-1) -th node 21. The output of the element OR-NOT 23 of the first node 21 enters the third input of the element AND 27 of the second node 19 (FIG. 3) and simultaneously the input of the element 23 of the second node 21. The output of the second node 21 enters the third input of the element And 27 of the third node 19 and the first input of the element 23 of the third node 21, and so on. Before completing the input-output operation of the EBC with The slave of an additional I / O interface signal TRB-A from the slave of any other additional I / O interface is blocked by the signal "Allowing the broadcast from the output of the AND 25 element to the second input of the corresponding element And 27. The appearance of the signal to allow the broadcast of signals between the EBC and WU of the corresponding direction on the signal TRB-A is supported by the signal RAB-A, arriving at the first input of the element OR 28 of the corresponding node 19 of the node 8 (Fig. 3) and further work is no different from the work described above with the sequence of signals of the initial sample. The device is connected to the main input-output interface lines on the rights of a divided group CCT. The functions of the node 5 in the operation of the device (Fig. 4). If KVV addressed to a subscriber whose address is different from the addresses of the slave connected to the directions of the slave, or the addressed subscriber is connected to the direction of the slave that is currently distributed

and

4t

L.J to another KVV, the circuits of node 8 do not generate a signal to allow the connection of KVV to any of the directions of the slave. As a result, the low voltage level from the output of the element OR 30 through the element NOT 31 allows the signal of VBR-K from node 3 along the circuit: AND 33-OR 34 of node 5 - node 4 - line 11, spread further along the lines of the I / O interface corresponding KVV. If during the sequence of the initial sampling signals and the SSC is connected to the direction of the WU, and the addressee is turned off or is working offline, then the VBR-K signal, distributed by external devices of the corresponding direction of the WU, enters node 5 through the chain: line 12 - node 10 of unit 2 - line 16 - AND 32 element (one of the M elements corresponding to the direction of the WU) - OR 34 node 5-node 4 - line 11, and spreads further along the lines of the I / O interface of the corresponding EIR.

From KVV

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777 additional and / or termisoV

FIG. 2

From node J

From lines 16

From node 7

45

Claims (1)

A device for interconnecting I / O channels with external devices, comprising K communication units with a channel and a communication unit with external devices, each communication unit with a channel comprising a receiver unit, a transmitter unit and a sampling signal broadcasting unit, and a communication unit with external devices containing a unit transmitters and a receiver node, while the inputs of the receiver nodes of each communication unit with the channel form K information inputs of the device from the input / output channels, and the input of the receiver node of the communication unit with external devices forms the information input of the device from external devices, the outputs of the transmitter nodes of each communication unit with the channel form K information outputs of the device to the input / output channels, and the output of the transmitters node of the communication unit with external devices forms the information output of the device to external devices, the group of outputs of the receiver node of the communication unit with external devices connected to the group of information inputs of the nodes of the transmitters in the K communication units with the channels and with the corresponding group of inputs of the sample of nodes of the broadcast signal of the sample in To the communication units with the channel, the groups of outputs of the receiver nodes in the K communication units with the channel are connected to the group of information inputs of the transmitter node in the communication unit with external devices, while in each communication unit with the channel the corresponding output of the receiver node is connected to the sample input of the broadcast node sampling signal, the first output of which is connected to the corresponding input of the transmitter node, characterized in that, in order to increase productivity by increasing the number of connected external devices without increasing time sampling signal propagation, M-1 (M is the number of external devices) communication units with external devices are introduced, and a sampling signal generation unit, a switching node and a sampling control node are introduced into each communication unit with the channel, while the inputs of the receiver nodes and outputs of transmitter nodes in M — 1 communication units with external devices form M — 1 information inputs and outputs of the device from external devices, respectively, groups of outputs of receiver nodes in M — 1 communication units with external devices are connected groups of information inputs of transmitter nodes in K blocks of communication with a channel and with corresponding groups of inputs of samples of nodes of broadcasting a sample signal in K blocks of communication with a channel, groups of outputs of receiver nodes in K blocks of communication with channels are connected to a group of information inputs of transmitters in M — 1 communication blocks with external devices, groups of permissive inputs of transmitter nodes in M communication units with external devices and K communication units with channels are connected to the corresponding outputs of sample control nodes K communication units with k On the other hand, the groups of control outputs of the nodes of the formation of a sequence of signals K of communication units with channels are connected to the corresponding inputs of the nodes of the transmitters M of communication units with external devices, the groups of the corresponding outputs of the nodes of the receivers of M communication units with external devices are connected to the groups of control inputs of the sampling nodes of the selection K of communication units with channels, while in each block of communication with the channel group of outputs of the node com-> the mutation is connected to the group of enabling inputs of the sampling control node, the group of outputs of which is connected to the allowing inputs of the broadcasting node of the sample signal, the second output of which is connected to the allowing input of the signal sequence generating node, the group of control inputs of which is connected to the corresponding outputs of the receiver node, the corresponding outputs of which are connected with a group of address inputs of the sampling control node, while the sampling control node contains an address decoder, M sample nodes and M — 1 nodes priorities, and each sample node contains two OR elements and four AND elements, and each priority node contains an AND element and an OR — NOT element, while the inputs of the address decoder and the first inputs of the first elements AND M of the sample nodes form a group of address inputs of the sample control node, the first inputs of the second AND elements of each sample node are connected to the first inputs of the AND element of the corresponding priority node, up to the (M – 1) th, and together with the first input of the second element AND Λ4-ΓΟ of the sample node and the first inputs of the first elements OR M knots fishing samples form a group of control inputs of the sampling control node, the first inputs of the third AND element of each sampling node are connected to the second inputs of the AND element of the corresponding priority node, up to the (Λ4—1) th, and together with the first input of the third element AND of the Λίth node the samples form a group of enabling inputs of the sampling control node, M — 1 inputs of the fourth element And each sample node is connected to the outputs of the third elements And of all the remaining M — 1 sampling nodes and together with the outputs of the third element And its sampling node develop a group of outputs of the sampling control node, the outputs of the address decoder are connected to the corresponding inputs of the second elements OR of the sampling nodes, while at each sampling node the output of the second OR element is connected to the second input of the first AND element, the output of which is connected to the second input of the first OR element, the output which is connected to the second input of the third AND element, the output of the fourth AND element is connected to the second input of the second AND element, the output of which is connected to the third input of the first OR element, the output of the OR element — NOT of each the th (r = 1, ..., A4-1) priority node is connected to the third input of the second AND element of each (i + l) -ro sampling node and the first input of the OR element — NOT of each (7 - {- 1) - of the priority node, the output of the OR element — NOT (Λ4—1) of the priority node is connected to the third input of the second element AND of the Mth sample node, while in each priority node the output of the element AND is connected to the second input of the element OR — NOT, the first whose input in the first priority node is connected to the unit potential bus of the device.