WO2016189578A1 - 通信装置、及び電力変換装置 - Google Patents
通信装置、及び電力変換装置 Download PDFInfo
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- WO2016189578A1 WO2016189578A1 PCT/JP2015/064702 JP2015064702W WO2016189578A1 WO 2016189578 A1 WO2016189578 A1 WO 2016189578A1 JP 2015064702 W JP2015064702 W JP 2015064702W WO 2016189578 A1 WO2016189578 A1 WO 2016189578A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
- G06F13/362—Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
- G06F13/4291—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus using a clocked protocol
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0421—Multiprocessor system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Definitions
- the present invention relates to a communication apparatus of serial communication method using SPI (Serial Peripheral Interface), and a power conversion apparatus using the communication apparatus.
- SPI Serial Peripheral Interface
- Patent Document 1 a reception unit that serially receives a command and a synchronization identification code different from the command as one set of input data, and a synchronization identification code from the reception unit, the synchronization identification code is predetermined
- a communication circuit has been proposed that includes a determination unit that instructs start of execution of response processing based on the above-mentioned command when the values match, and according to the configuration of this communication circuit, the serial communication terminal is set to 3
- the invention can be applied to any three-wire SPI provided or one four-wire SPI provided with four terminals for serial communication, and a highly reliable serial communication circuit or the like can be realized. .
- the present invention has been made to solve the above-mentioned problems in the conventional communication apparatus, and it shortens communication time, enables communication processing even with a circuit configuration with low processing capacity, and enables each slave It is an object of the present invention to provide a communication device capable of reducing the deviation of the operation timing after communication.
- the present invention uses a plurality of communication devices capable of shortening communication time, enabling communication processing even with a circuit configuration with low processing capacity, and reducing deviation of operation timing after communication for each slave.
- An object of the present invention is to provide a power conversion device capable of reducing a shift in operation timing between power conversion units.
- the communication device is A communication device comprising a master communication unit as a master and a slave communication unit as a slave to the master communication unit, wherein serial communication is performed using SPI.
- a plurality of slave communication units are provided for the master communication unit, The master communication unit simultaneously outputs communication signals to the plurality of slave communication units. It is characterized by
- the power converter according to the present invention is A plurality of phase bridge circuits configured by connecting in series an upper arm and a lower arm each having a power semiconductor switching element are connected in parallel, and both ends of each phase bridge circuit are connected to a chargeable / dischargeable DC power supply
- the connection points connected in series in each phase bridge circuit are respectively connected to an AC terminal of an armature winding of a multiphase rotary electric machine, and power conversion is performed between the DC power supply and the polyphase AC rotary electric machine.
- a power converter that A control unit provided with a master communication unit; A gate drive unit provided in each of the plurality of phase bridge circuits, and provided with a slave communication unit; Equipped with The master communication unit and the slave communication unit communicate using the communication device according to any one of claims 1 to 10, Controlling driving of each phase bridge circuit based on the communication by the communication device; It is characterized by
- the communication time can be shortened, and the communication processing can be performed even with the circuit configuration with low processing capacity, thereby reducing the cost and reducing the deviation of the operation timing after communication for each slave. Can.
- the cost can be reduced by shortening the communication time and thereby enabling communication processing even with a circuit configuration with low processing capacity, and at the operation timing after communication for each slave.
- a power converter capable of reducing deviation can be obtained.
- FIG. 5 is a circuit diagram showing an example of a logical operation unit in the communication device in accordance with Embodiment 1 of the present invention. It is a timing chart explaining operation of a communications device concerning Embodiment 1 of this invention. It is a block diagram which shows the structure of the communication apparatus based on Embodiment 2 of this invention.
- FIG. 7 is a circuit diagram showing an example of a logical operation unit in the communication device in accordance with Embodiment 2 of the present invention. It is a timing chart explaining operation of a communications device concerning Embodiment 2 of this invention.
- FIG. 16 is a circuit diagram showing an example of a logical operation unit in the communication apparatus in accordance with Embodiment 3 of the present invention. It is a timing chart explaining operation of a communications device concerning Embodiment 3 of this invention. It is another timing chart explaining operation
- FIG. 1 is a block diagram showing a configuration of a communication apparatus according to Embodiment 1 of the present invention.
- the communication apparatus 1 has one master communication unit 2 and two slave communication units 31 and 3n, and further, the master communication unit 2 and a plurality of slave communication units 31 and 3n.
- a logic operation unit 4 inserted in the communication path is provided.
- Master communication unit 2 transmits one data output signal line MOSI for transmitting data output signal MOSI to each slave communication unit 3 and one data input signal for receiving data input signal MISO from logic operation unit 4 A line MISO, one synchronous clock signal line MCLK transmitting the synchronous clock signal MCLK to the logic operation unit 4, and two slave selection signals CS_1 and CS_n having the same number as the number 2 of the slave communication units 31 and 3n. , And two slave selection signal lines CS_1 and CS_n for transmitting the signals to the logic operation unit 4, respectively.
- each slave communication unit 31, 3n transmits one data input signal line SDI to which data output signal MOSI from master communication unit 2 is input and data output signal SDO_1, SDO_n to logic operation unit 4.
- Each of the data output signal lines SDO_1 and SDO_n to be input, each synchronous clock signal line CLK to which the synchronous clocks CLK_1 and CLK_n from the logic operation unit 4 are input, and a slave selection signal CS from the logic operation unit 4 Are connected to the master communication unit 2 via the communication path and logic operation unit 4.
- the logic operation unit 4 receives the synchronization clock signal MCLK output from the master communication unit 2 and the two slave selection signals CS_1 and CS_n, and inputs the synchronization clock signals CLK_1 and CLK_n and the slave selection signal CS to the slave communication units 3 and 3n. Output Further, the logic operation unit 4 receives the data output signals SDO_1 and SDO_n output from the slave communication units 3 and 3n, and transmits the data input signal MISO to the master communication unit 2.
- the circuit configuration shown in FIG. 2 can be considered.
- the specific circuit configurations of the master communication unit 2 and the slave communication units 31 and 3n conventionally, various circuits related to serial communication and SPI communication have been proposed and realized, and these techniques can be applied here. The explanation is omitted here.
- FIG. 2 is a circuit diagram showing an example of a logical operation unit in the communication apparatus according to Embodiment 1 of the present invention.
- the logic operation unit 4 is provided with two AND circuits 5 each having the synchronous clock signal MCLK output from the master communication unit 2 and the slave selection signals CS_1 and CS_n as inputs.
- Certain synchronous clock signals CLK_1 and CLK_n are output to the synchronous clock signal line CLK of each slave communication unit 31, 3n.
- one OR circuit 6 is provided which receives each slave selection signal CS_1 and CS_n output from the master communication unit 2, and the slave selection signal CS which is the output thereof is branched to be each slave communication unit 31, It is output to the 3n slave selection signal line CS.
- the logic operation unit 4 includes two three-state buffers 71 and 7n for inputting data output signals SDO_1 and SDO_n output from the slave communication units 31 and 3n, and the outputs of the three-state buffers 71 and 7n are mutually different. After being connected, the data input signal MISO of the master communication unit 2 is connected.
- control signals C1 and Cn for switching the outputs of the three-state buffers 71 and 7n to high impedance according to the logical operation unit 4 are slave selection signals in accordance with the predetermined communication priorities of the two slave communication units 31 and 3n.
- the logical operation process is performed using CS_1 and CS_n.
- the slave selection signal with the highest priority is set as slave selection signal CS_1
- control of three-state buffer 71 is input data output signal SDO_1 of slave communication unit 31 corresponding to slave selection signal CS_1.
- the slave selection signal CS_1 is connected to the signal C1.
- an output signal Cn of an AND circuit 50 to which a signal obtained by inverting the signal level of the slave selection signal CS_1 and the slave selection signal CS_n are input is connected.
- FIG. 3 is a timing chart for explaining the operation of the communication apparatus according to Embodiment 1 of the present invention, where the horizontal axis is time, the vertical axis is slave selection signals CS_1 and CS_n from master communication unit 2, and master communication unit 2, synchronous clock signal MCLK, synchronous clocks CLK_1 and CLK_n from the logic operation unit 4, data output signal MOSI from the master communication unit 2, slave selection signal CS from the logic operation unit 4, data input from the logic operation unit 4
- the signals MISO are shown respectively.
- the master communication unit 2 sets all slave selection signals CS_1 and CS_n to a high level which is significant, and outputs the synchronous clock signal MCLK and the data output signal MOSI.
- the slave selection signal CS of the slave communication unit 3 is made significant, and the synchronous clock signal MCLK output from the master communication unit 2 is used as it is. It simultaneously outputs to the slave communication units 31, 3n.
- the data output signal MOSI of the master communication unit 2 is output as the write command and the data of the address for implementing it, and is subsequently output as the write data.
- data indicating a state such as a failure of the slave communication units 31 and 3n is output on the data output signals SDO_1 and SDO_n, so the data output signals SDO_1 and SDO_n have logic Only data of the slave communication unit 31 corresponding to the slave selection signal CS_1 having the highest priority is selected by the operation unit 4, and is output from the logic operation unit 4 to the master communication unit 2 as the data input signal MISO.
- the data output signal SDO_1 is selected and connected to the data input signal MISO.
- the data output signal MOSI of the master communication unit 2 is output as a read command and data of an address for implementing it, and the period from time T1 to time T2 described above.
- the logic operation unit 4 only the data output signal SDO_ 1 of the slave communication unit 31 corresponding to the slave selection signal CS_ 1 with the highest priority is selected and connected to the data input signal MISO of the master communication unit 2.
- the master communication unit 2 makes only the slave selection signal CS_1 to read data significant.
- Slave selection signal CS_n is set unintentionally.
- the data output signal MOSI of the master communication unit 2 becomes a low level or high level fixed output of a predetermined data bit length (in the example shown in FIG. 3, it becomes a low level fixed output).
- the slaves set by the master communication unit 2 are significant while the slave selection signals CS of all the slave communication units 31, 3n are made significant in the period from time T3 to T4 in FIG.
- the synchronization clock signal CLK_1 is continuously output only to the slave communication unit 31 corresponding to the selection signal CS_1, and the output of the synchronization clock signal CLK_n to the slave communication unit 3n corresponding to the slave selection signal CS_n set unintentionally is stopped, ie, , Fixed at high level or low level (in the example shown in FIG. 3, it becomes fixed output at low level).
- the master communication unit 2 makes the slave selection signal CS_1 which has been set significantly so far as meaningless, and switches the slave selection signal CS_n which has been set so far as significant. Then, in the period from time T4 to T5 in FIG. 3, the slave corresponding to the slave selection signal CS_n significantly set by the master communication unit 2 while keeping the slave selection signal CS of all the slave communication units 31 and 3n significant.
- the synchronization clock signal CLK_n is continuously output only to the communication unit 3n, and the output of the synchronization clock signal CLK_1 is stopped to the slave communication unit 31 corresponding to the slave selection signal CS_1 set unintentionally, that is, fixed to high level or low level. (In the example shown in FIG. 3, it becomes a fixed output at low level).
- the data output signal SDO_n output from the unit 3 is connected to the data input signal MISO of the master communication unit 2.
- FIG. 3 describes the case where the same data is simultaneously written to all the slave communication units 31 and 3n
- the communication device according to the present invention is not limited to this, and the figure also shows the case where the data are different.
- This can be performed in the same manner as the aforementioned data reading which starts from time T2 of 3. That is, the master communication unit 2 simultaneously outputs only the write command from the data output signal MOSI to all the slave communication units 31 and 3n at the same time with all the slave selection signals CS_1 and CS_n set significantly, The slave communication unit to communicate with is selected by the selection signal, and different data is output for each of the slave communication units 31 and 3n. Then, since the synchronous clock signal is individually output to each of the slave communication units 31 and 3n according to the slave selection signal of the master communication unit 2 in the logic operation unit 4, data different for each of the slave communication units 31 and 3n Can be written continuously.
- master communication unit 2 significantly sets all slave selection signals, and outputs synchronous clock signal MCLK and data output signal MOSI.
- Write command and write data, and read command can be simultaneously output to all slave communication units 31 and 3n, and communication processing can be performed even with a circuit configuration with low processing capacity and shortening of communication time.
- the cost can be reduced, and the deviation in operation timing after communication for each slave can be reduced.
- the slave communication unit since the master communication unit 2 simultaneously outputs the write command or the read command to all the slave communication units 31 and 3n, the slave communication unit significantly sets the slave selection signal only to the slave communication unit that performs communication.
- a synchronous clock signal is output only to the slave communication unit performing communication via the logic operation unit 4, and data different from each slave communication unit 3 is continuously written, or data is continuously transmitted individually from the slave communication unit 3. Can be read.
- each slave communication unit 31 since the logic operation unit 4 keeps setting the slave selection signal CS of each slave communication unit 31, 3n significantly if any slave selection signal is significant, as described above, each slave communication unit 31 Also, while the data is continuously written individually for every 3n, or while the data is continuously read, the contents of the command from the master communication unit 2 can be maintained in all the slave communication units 31, 3n. Therefore, only one command can be issued to all the slave communication units 31, 3n, and communication time can be shortened, that is, communication efficiency can be improved.
- the present invention is not limited to this, and the number of slave communication units may be three or more.
- the number of slave communication units may be three or more.
- FIG. 4 is a block diagram showing a configuration of a communication apparatus according to Embodiment 2 of the present invention.
- the master communication unit 2 has one slave selection signal line CS for transmitting the slave selection signal CS as compared with the communication apparatus according to the second embodiment shown in FIG.
- the signal is directly connected to the slave selection signal line CS of each slave communication unit 31, 3n without passing through the logic operation unit 4.
- the data output signal MOSI from the master communication unit 2 is input to the data input signal line SDI of each slave communication unit 31, 3n.
- the master communication unit 2 includes two synchronous clock signal lines CLK_1 and CLK_n as the number of the two slave communication units 31 and 3n, and each synchronous clock signal line CLK_1 and CLK_n is branched to form the logic operation unit 4 , And each slave communication unit 3.
- the logic operation unit 4 receives the two synchronous clock signals CLK_1 and CLK_n output from the master communication unit 2 and the data output signal SDO output from each of the slave communication units 31 and 3n, performs logic operation, and executes the master operation. Output to the data input signal line MISO of the communication unit 2.
- a specific circuit configuration of the logic operation unit 4 for example, a circuit configuration shown in FIG. 5 can be considered.
- FIG. 5 is a circuit diagram showing an example of a logical operation unit in the communication apparatus according to Embodiment 2 of the present invention.
- the logic operation unit 4 is provided with one XOR circuit 8 having two synchronous clock signals CLK_1 and CLK_n output from the master communication unit 2 as input, and an output thereof and two synchronous clock signals.
- Two AND circuits 51 and 5n are provided, each of which receives CLK_1 and CLK_n.
- the output of each of the AND circuits 51 and 5n is input as a set signal S of the two RS latch circuits 91 and 9n.
- One NOR circuit 10 is provided which receives the outputs Q of the RS latch circuits 91 and 9n and the output of the XOR circuit 8 described above.
- OR circuits 61 and 6n are provided, each having the output of the NOR circuit 10 and the output Q of each RS latch circuit 91 and 9n as an input.
- the outputs of the OR circuits 61 and 6n are, as shown in FIG. 2, each slave through logic operation processing for preventing interference of the data output signal SDO output from each slave communication unit 31 and 3n.
- the data output signals of the communication units 31, 3n are input as control signals of the three-state buffers 71, 7n.
- the outputs of the three-state buffers 71 and 7n are connected to the data input signal line MISO of the master communication unit 2 after the outputs are connected to each other as in FIG. 2 described above.
- the OR circuits 61 and 6n, the RS latch circuits 91 and 9n, and the AND circuits 51 and 5n have logics corresponding to the slave communication units 31 and 3n to which the synchronous clock signals CLK_1 and CLK_n to be input are connected.
- the outputs of the OR circuits 61 and 6n are connected to the three-state buffers 71 and 7n to which the data output signals SDO_1 and SDO_n of the corresponding slave communication units 31 and 3n are input.
- the slave communication unit 31 to which the synchronous clock signal CLK_1 is input is regarded as the one with the highest communication priority, and the data output signal SDO_1
- the output is directly input to the control signal C1 of the three-state buffer 71, and the signal output level of the NOR circuit 10 is inverted with respect to the data output signal SDO_n of the slave communication unit 3n having low priority, and the OR circuit 6n.
- an output of the three-state buffer 7n is connected to the control signal Cn of the three-state buffer 7n.
- logic operation unit 4 shown in FIG. 5 is provided with counter circuits 111 and 11n for counting a predetermined data bit length based on synchronous clock signals CLK_1 and CLK_n, as many as slave communication units 31 and 3n. ing. Then, after counting the predetermined data bit length, each of the counter circuits 111 and 11 n sets the signal level significantly and outputs it.
- the signals output from the counter circuits 111 and 11n are subjected to delay processing and input as reset signals R of the RS latch circuits 91 and 9n corresponding to the synchronous clock signals CLK_1 and CLK_n.
- the output signal Q of each RS latch circuit 91, 9n is input to the NOR circuit 10 and the OR circuits 61, 6n, and also as a reset signal CLR of each counter circuit 111, 11n.
- FIG. 6 is a timing chart for explaining the operation of the communication apparatus according to the second embodiment of the present invention.
- the horizontal axis represents time, and the vertical axis represents the slave selection signal CS from the master communication unit 2 and the master communication unit 2.
- master communication unit 2 sets slave selection signal CS to a high level which is significant, and synchronously outputs each synchronous clock signal CLK_1, CLK_n at the same signal level.
- the data output signal MOSI is output to each slave communication unit 31, 3n. According to the above-described operation, as in the first embodiment described above, the write command and the write data can be simultaneously output to all the slave communication units 31, 3n.
- the output of the XOR circuit 8 becomes low level, and the output of each RS latch circuit 91, 9n also becomes low level. , 11n are set significantly, and each counter circuit 111, 11n does not count. Then, since all the input signals of the NOR circuit 10 are at low level, the output is set to high level, and the outputs of the respective OR circuits 61 and 6n in the subsequent stage are also set to high level.
- the data output signal SDO_1 of the slave communication unit 31 having the highest priority is selected by the above-described interference prevention circuit at the rear stage of the OR circuits 61 and 6n, and the selected data output signal SDO_1 is used as data of the master communication unit 2.
- Each three-state buffer 71, 7n is controlled to output to the input signal MISO.
- the data output signal MOSI of the master communication unit 2 outputs a read command and data of an address for implementing it, and the period from time T1 to time T2 described above.
- the logic operation unit 4 only the data of the slave communication unit 31 corresponding to the slave selection signal SDO_ 1 with the highest priority is selected and output to the data input signal MISO of the master communication unit 2.
- the master communication unit 2 synchronizes the clock to the slave communication unit 31 to read data. Only the signal CLK_1 is output, and the other synchronous clock signal CLK_n stops the output, ie, fixes it to low level.
- the data output signal MOSI of the master communication unit 2 is set to a low level or a high level fixed output of a predetermined data bit length (in the example shown in FIG. 6, it becomes a low level fixed output).
- the synchronous clock signal CLK_1 is synchronized with the set signal S of the RS latch circuit 91 corresponding to the synchronous clock signal CLK_1 output by the master communication unit 2. Since the output signal Q of the RS latch circuit 91 which is input is set to the high level, the reset signal CLR of the counter circuit 111 to which the output signal Q is connected is set unintentionally, and the counter circuit 111 The counting is started in synchronization with the synchronous clock signal CLK_1. Further, since the output signal Q of the counter circuit 111 is set to the high level, the output of the NOR circuit 10 becomes the low level.
- the reset signal R of the RS latch circuits 91 and 9n is set significantly to release the latch and also the counter circuit. Since the reset signals (CLR) of 111 and 11n are set significantly, the RS latch circuits 91 and 9n do not latch up, and slave communication is performed to the master communication unit 2 by switching the synchronous clock signal described later.
- the data output signals of the units 31, 3n can be appropriately selected according to the synchronous clock signal.
- the delay circuits Delay_1 and Delay_n provided between the reset circuits R of the counter circuits 111 and 11n to the RS latch circuits 91 and 9n are set signals S of the RS latch circuits 91 and 9n.
- reset signal R simultaneously go high to prevent the outputs of the RS latch circuits 91 and 9n from becoming undefined.
- the delay time by the delay circuits Delay_1 and Delay_n is set from the propagation time of each signal. can do.
- the delay time may be set to a half cycle of the synchronous clock signals CLK_1 and CLK_n.
- the master communication unit 2 switches the synchronous clock signal, and the same operation is repeated, so that the data input signal MISO of the master communication unit 2 is processed through the logical operation processing of the logical operation unit 4.
- the data signal output SDO_n of the slave communication unit 3n is input.
- FIG. 6 describes the case where the same data is simultaneously written to all slave communication units 31 and 3n
- the present invention is not limited to this, and the time T2 in FIG. It can be done in the same way as when reading data starting from. That is, while the master communication unit 2 outputs the synchronous clock signals CLK_1 and CLK_n at the same signal level and simultaneously outputs only the write command from the data output signal MOSI to all the slave communication units 3, communication is performed.
- the slave communication units 31 and 3n output only synchronous clock signals connected thereto, and the slave communication units 31 and 3n output different data.
- the logic operation unit 4 outputs only the data output signal SDO of the slave communication unit 3 in communication to the data input signal MISO of the master communication unit 2 according to the synchronous clock signal of the master communication unit 2.
- the master communication unit 2 may also read data indicating a state such as fail at the same time as writing data to the slave communication units 31 and 3 n performing communication without interference of the data output signal SDO of each slave communication unit 3. it can.
- master communication unit 2 sets slave selection signal CS significantly and simultaneously outputs synchronization clock signals CLK_1 and CLK_n at the same signal level.
- the data output signal MOSI since the data output signal MOSI is output, the write command and write data and the read command can be simultaneously output to all the slave communication units 31, 3n, thereby shortening the communication time and thereby the circuit configuration with low processing capacity.
- the cost can be reduced by enabling the communication processing, and the deviation of the operation timing after communication for each slave can be reduced.
- the master communication unit 2 After the master communication unit 2 simultaneously outputs the write command to all the slave communication units 31 and 3n, the master communication unit 2 outputs the synchronous clock signal only to the slave communication unit performing communication, and writes from the data output signal MOSI Since data is output, only one command can be issued to all the slave communication units 31, 3n, and communication time can be shortened, that is, communication efficiency can be improved.
- the logic operation unit 4 is configured to transmit each slave communication unit 31 while the master communication unit 2 is simultaneously outputting a write command and write data and a read command to all slave communication units 31 and 3n. Since the data output signal SDO of only the slave communication unit with the highest priority among the data output signals SDO output from 3n is output to the master communication unit 2, interference between the data output signals SDO can be prevented.
- the logic operation unit 4 is a slave communication unit 3 in which the synchronous clock signal is output by a predetermined data bit length based on the synchronous clock signal output only to the slave communication unit that the master communication unit 2 wants to read data. Since logical operation processing is performed to output the data output signal SDO output from the data communication circuit to the data input signal MISO of the master communication unit 2, data can be continuously read individually from the slave communication units 3 or 1 3n. it can.
- the case of two slave communication units is shown, but the present invention is not limited to this, and the number of slave communication units may be three or more. . In that case, the same operation and effect can be obtained by modifying the number of synchronous clock signals of the master communication unit 2 and the circuit configuration of the logic operation unit 4 in accordance with the number of slave communication units.
- FIG. 7 is a block diagram showing a configuration of a communication apparatus according to Embodiment 3 of the present invention.
- the master communication unit 2 has only one slave selection signal CS, and this slave The selection signal CS branches and is directly connected to the logic operation unit 4 and the slave selection signal CS of each slave communication unit 31, 3n.
- the master communication unit 2 includes two data output signal lines MOSI_1 and MOSI_n as in the slave communication units 31 and 3n, and each data output signal line is branched to form the logic operation unit 4 and each slave communication unit 31. , 3n are connected.
- the logic operation unit 4 performs logic operation with all signals output from the master communication unit 2 and each slave communication unit 31 3n as input, and performs synchronous clock signals for each slave communication unit 31 3n, and the master communication unit Output the data input signal MISO of 2.
- a specific circuit configuration of the logic operation unit 4 for example, one as shown in FIG. 8 can be considered.
- FIG. 8 is a circuit diagram showing an example of a logical operation unit in the communication apparatus according to Embodiment 3 of the present invention.
- the logic operation unit 4 is provided with three counter circuits of a first counter circuit 12, a second counter circuit 13, and a third counter circuit 14.
- the first counter circuit 12 has a purpose to count the synchronous clock signal MCLK output from the master communication unit 2 and to measure a turning point of a read command or a write command of a predetermined bit length determined in advance.
- the latch signal SF latched at the high level which is significant and the latch signal NSF latched at the low level are outputted.
- the first counter circuit 12 has a circuit for extracting the signal level of a bit at a predetermined position of the command signal, and determining whether the extracted command signal is a read command signal or a write command signal, as shown in FIG.
- the bit (the 7th bit) of the predetermined position of each command signal is high level, it is judged that it is a write command, and then the high level signal is latched and the command detection output CMOSI_1 and CMOSI_n are logically operated. Output to other circuits in section 4.
- the first counter circuit 12 is configured to reset the count of the synchronous clock signal MCLK when the slave selection signal CS is involuntary, and release the latch signal SF and the command detection signals CMOSI_1 and CMOSI_n from being latched to the high level. It has become.
- the second counter circuit 13 has a purpose to count a synchronous clock signal MCLK output from the master communication unit 2 and to measure a node of a data output signal having a predetermined bit length determined in advance. However, in response to the latch signal SF outputted at the timing when the output of the command signal ends, the reset is released and the counting operation is started.
- the third counter circuit 14 has the purpose of counting the number of data output signals output from the master communication unit 2 by counting the pulse signal output from the second counter circuit 13 at the node of the data output signal. 31 and 3n can be counted, and the counted number is output to another circuit in the logic operation unit 4 as a data number count signal DCnt.
- the slave selection signal CS is indifferent, the count of the pulse signal is reset.
- control signals C1 and Cn are selected from the three-state buffers 71 and 7n so as to prioritize the communication priority of the slave communication units 31 and 3n determined in advance and the slave communication unit outputting the write command.
- the output is switched to high impedance, and the logic operation unit 4 performs logic operation using the command detection signal CMOSI_1 and CMOSI_n output from the first counter circuit 12 and the data count signal DCnt output from the third counter circuit 14. It is configured to do.
- the data output signal SDO_1 of the slave communication unit 31 is prioritized.
- the logic operation unit 4 outputs the first counter circuit 12 for the purpose of successively and continuously outputting the data output signals SDO_1 and SDO_n output from the slave communication units 31 and 3n to the master communication unit 2.
- a logic operation circuit is configured to perform logic operation using command detection signal CMOSI_1, CMOSI_n, and latch signal NSF, control signals C1 and Cn of three-state buffers 71 and 7n, and synchronous clock signal MCLK of master communication unit 2, Synchronous clock signals CLK_1 and CLK_n of the slave communication units 31 and 3n are generated.
- the synchronous clock signals CLK_1 and CLK_n are output to all the slave communication units 31 and 3n. Then, in the case of the write command, following the write command signal, the synchronous clock signal is output to the corresponding slave communication units 31 and 3 n during a period in which the master communication unit 2 is outputting data.
- the synchronous clock signal is output in the descending order of the communication priority determined in advance, and the data output signals output from the slave communication units 31 and 3 n are individually and continuously transmitted by the master communication unit 2. Make it readable.
- FIG. 9A is a timing chart explaining the operation of the communication apparatus according to the third embodiment of the present invention
- FIG. 9B is another timing chart explaining the operation of the communication apparatus according to the third embodiment of the present invention
- FIG. 9D is still another timing chart for explaining the operation of the communication apparatus according to the third embodiment of the present invention
- FIG. 9D is another timing chart for explaining the operation of the communication apparatus according to the third embodiment of the present invention.
- the horizontal axis represents time
- the vertical axis represents the slave selection signal CS from the master communication unit 2, the synchronous clock signal MCLK from the master communication unit 2, the synchronous clock signal CLK_1 from the logic operation unit, CLK_n, data output signal MOSI_1 from the master communication unit 2, MOSI_n, command detection signal CMOSI_1 from the first counter circuit 12, CMOSI_n, latch signal SF from the first counter circuit 12, and the third counter circuit 14
- a data count signal DCnt, a control signal C1 from the OR circuit 6, a control signal Cn from the AND circuit 5, and a data input signal MISO from the logic operation unit 4 are shown.
- master communication unit 2 sets slave selection signal CS to a high level which is significant, and also outputs synchronous clock signal MCLK, and a read command signal or a write command signal to each data. It outputs to the signals MOSI_1 and MOSI_n.
- the logic operation unit 4 sets the first counter circuit 12 as each command detection output CMOSI_1, CMOSI_n. A high level signal is output, and the synchronous signal clock output from the master communication unit 2 is output as it is as the synchronous clock signals CLK_1 and CLK_n of the slave communication units 31 and 3n. Following the write command, the master communication unit 2 outputs the write data to each data output signal MOSI_1, MOSI_n.
- master communication unit 2 sets slave selection signal CS to a low level, which is meaningless, and ends communication. According to the above-described operation, as in the first embodiment described above, the write command and the write data can be simultaneously output to all the slave communication units 31, 3n.
- each data output signal MOSI_1, MOSI_n is a write command, among the data output signals output from each slave communication unit 31, 3n.
- the three-state buffers 71 and 7n are controlled by the control signals C1 and Cn so as to select the data output signal SDO_1 having a predetermined high communication priority, and are output to the data input signal MISO of the master communication unit 2.
- each data output signal MOSI_1 and MOSI_n output from the master communication unit 2 is a read command. Therefore, first, the master communication unit 2 sets the slave selection signal CS to a high level which is significant, and outputs the synchronous clock signal MCLK and the read command to the respective data output signals MOSI_1 and MOSI_n.
- the logic operation unit 4 detects a read command in the first counter circuit 12, outputs a low level signal of each command detection output CMOSI_1, CMOSI_n, and determines a predetermined communication priority.
- the synchronization signal clock output from the master communication unit 2 is output to the synchronization clock signal CLK of the slave communication unit 31 from the high slave communication unit 31 first, and then the synchronization signal output from the master communication unit 2 to the slave communication unit 3 n.
- the clock is output to the synchronous clock signal CLK of the slave communication unit 3n.
- the priority of the synchronous clock signal CLK_1 output from the logic operation unit 4 is set high, first, the synchronous clock signal CLK_1 is output to the slave communication unit 31. At this time, the control signals C1 and Cn of the three-state buffers 71 and 7n are controlled such that the data output signal SDO_1 of the slave communication unit 31 with high priority is selected, and the data input signal MISO of the master communication unit 2 is It is output.
- the second counter circuit 13 counts the synchronous clock signal MCLK from the master communication unit 2 and synchronizes with the time when a predetermined data bit length is output or the falling of the synchronous clock signal MCLK thereafter.
- the pulse signal is output to the third counter circuit 14.
- the third counter circuit 14 increments the data count signal DCnt by one, and controls the three-state buffers 71 and 7n and the synchronization clock signals accordingly, and this time, the priority of The low synchronous clock signal CLK_n is output to the slave communication unit 7n and controlled so that the data output signal SDO_n of the slave communication unit 3n with low priority is selected, and is output to the data input signal MISO of the master communication unit 2.
- master communication unit 2 sets slave selection signal CS to a low level, which is meaningless, and ends communication. According to the above-described operation, as in the first embodiment described above, the write command and the write data can be simultaneously output to all the slave communication units 31, 3n.
- either one of the data output signals MOSI_1 and MOSI_n output from the master communication unit 2 is a write command. ing. That is, first, the master communication unit 2 sets the slave selection signal CS to a high level that is significant during the period from time T5 to time T6 in FIG. 9C and the period from time T7 to time T8 in FIG. 9D.
- the synchronous clock signal MCLK and the read command or the write command signal are output to the data output signals MOSI_1 and MOSI_n.
- the logic operation unit 4 detects a read command or a write command in the first counter circuit 12 and outputs a high level or low level signal as each command detection output CMOSI_1, CMOSI_n,
- the synchronization signal clock output from the master communication unit 2 is sequentially output to the synchronization clock signal of each of the slave communication units 31 and 3n as a slave communication unit having a high communication priority as the write command.
- the command detection output CMOSI_1 is a write command is shown, and the logic operation unit 4 first outputs the corresponding synchronous clock signal CLK_1.
- the control signals C1 and Cn of the three-state buffers 71 and 7n are also controlled so that the data output signal SDO_1 of the slave communication unit 31 to which the write command is issued is selected.
- the signal SDO_1 is output to the data input signal MISO of the master communication unit 2.
- the second counter circuit 13 counts the synchronous clock signal MCLK from the master communication unit 2 and synchronizes with the time when the predetermined data bit length is output or the falling of the synchronous clock signal thereafter.
- the pulse signal is output to the third counter circuit 14.
- the third counter circuit 14 increments the data count signal DCnt by one, and controls the three-state buffers 71 and 7n and the synchronization clock signals accordingly, and this time the read command Is output and is controlled so that the data output signal SDO_n of the slave communication unit 3 n corresponding thereto is selected, and is output to the data input signal MISO of the master communication unit 2.
- Ru At time T6, which is the end of the period from time T5 to time T6, master communication unit 2 sets slave selection signal CS to a low level, which is meaningless, and ends communication.
- the second counter circuit 13 counts the synchronous clock signal MCLK from the master communication unit 2 and synchronizes with the time when the predetermined data bit length is output or the falling of the synchronous clock signal thereafter.
- the pulse signal is output to the third counter circuit 14.
- the third counter circuit 14 increments the data count signal DCnt by one, and controls the three-state buffers 71 and 7n and the synchronization clock signals accordingly, and this time the read command Is controlled so that the corresponding data output signal SDO_1 of the slave communication unit 31 is selected, and is output to the data input signal MISO of the master communication unit 2.
- Ru At time T8, which is the end of the period from time T7 to time T8, master communication unit 2 sets slave selection signal CS to a low level, which is meaningless, and ends communication.
- master communication unit 2 sets slave selection signal CS significantly, synchronization clock signal MCLK, and each data output signal MOSI_1, MOSI_n. And write command and write data and read command can be simultaneously output to all slave communication units 31 and 3n, thereby shortening communication time and thereby enabling communication processing even with a circuit configuration with low processing capacity. As a result, the cost can be reduced and the deviation of the operation timing after communication for each slave can be reduced.
- master communication unit 2 since master communication unit 2 has the same number of data output signals MOSI_1 and MOSI_n as slave communication units 31 and 3n, different commands and different data can be simultaneously written to slave communication units 31 and 3n.
- the communication time can be shortened, that is, the communication efficiency can be improved.
- the slave communication units 31, 3n since the data output signal SDO is output to the master communication unit 2 only for the slave communication unit with the highest priority with respect to the data output signal SDO to be output, interference between the data output signals can be prevented.
- the logic operation unit 4 transmits the synchronous clock signals to the slave communication units 31 and 3n in the order of high communication priority.
- the data output signal SDO output from the slave communication units 31 and 3n is output to the data input signal MISO of the master communication unit 2, so that the slave communication units 31 and 3n individually Data can be read continuously.
- the logic operation unit 4 synchronizes individually by giving priority to the slave communication unit that has output the write command. Since communication is performed by outputting a clock signal, data indicating a state such as fail output from the slave communication unit during data writing interferes with the data output signal SDO output from the slave communication unit receiving the read command. Instead, the master communication unit 2 can read the data from each slave communication unit 31, 3n successively and individually.
- the present invention is not limited to this, and the number of slave communication units may be three or more. .
- similar operations and effects can be obtained by modifying the number of data output signals of the master communication unit 2 and the circuit configuration of the logic operation unit 4 in accordance with the number of slave communication units.
- FIG. 10 is a block diagram showing a configuration of a communication apparatus according to Embodiment 4 of the present invention.
- master communication unit 2 has only one slave selection signal CS, and slave communication units 31 and 3n
- slave communication units 31 and 3n The same two data input signal lines MISO_1 and MISO_n as the number are provided, and each data input signal line is connected to the data output signal SDO of the slave communication units 31 and 3n, respectively.
- FIG. 11 is a timing chart for explaining the operation of the communication apparatus according to the fourth embodiment of the present invention.
- the horizontal axis represents time
- the vertical axis represents slave selection signal CS from master communication unit 2
- synchronous clock signal CLK from master communication unit 2
- data output signal MOSI from master communication unit 2
- slave communication Data output signals MISO_1 and MISO_n from the units 31 and 3n are shown, respectively.
- the master communication unit 2 sets the slave selection signal CS to a high level which is significant, outputs the synchronous clock signal CLK, and outputs the data output signal MOSI.
- the write command and the write data and the read command can be simultaneously output to all the slave communication units 31 and 3n.
- each slave communication unit 31, 3n outputs data indicating a state such as failure of the slave communication unit 31, 3n to the master communication unit 2 in the data output signal SDO. Because the master communication unit 2 inputs the data output signal to the data input signals MISO_1 and MISO_n in synchronization with the synchronous clock signal, the master communication unit 2 prepares a predetermined data bit length prepared in the master communication unit 2. It has a number and is stored in a register with the same bit data length as the number of slave communication units. Then, at time T2 in FIG. 11, the state of each of the slave communication units 31 and 3n can be read by restoring data from the stored register.
- master communication unit 2 significantly sets slave selection signal CS and outputs synchronous clock signal CLK and data output signal MOSI.
- Write command and write data and read command can be output simultaneously to all slave communication units 31 and 3n, and the communication time can be shortened, thereby enabling communication processing even with a circuit configuration with low processing capacity. As a result, it is possible to reduce the deviation of the operation timing after communication for each slave.
- master communication unit 2 since master communication unit 2 has the same number of data input signals MISO_1 and MISO_n as the number of slave communication units 31 and 3n, data can be read simultaneously from each slave communication unit 31 and 3n, shortening the communication time, ie, Communication efficiency can be improved.
- the logic operation unit 4 can be omitted, and the circuit scale can be reduced and the cost can be reduced. it can.
- FIG. 12 is a block diagram showing a configuration of a power converter according to Embodiment 5 of the present invention.
- power converter 15 has a U-phase bridge circuit as a U-phase arm in which a U-phase upper arm consisting of power semiconductor switching element 161 and a U-phase lower arm consisting of power semiconductor switching element 162 are connected in series. It has 191.
- a V-phase bridge circuit 192 as a V-phase arm in which a V-phase upper arm consisting of a power semiconductor switching element (not shown) and a V-phase lower arm consisting of a power semiconductor switching element (not shown) are connected in series W phase bridge circuit 193 as a W phase arm in which a W phase upper arm consisting of a power semiconductor switching element (not shown) and a W phase lower arm consisting of a power semiconductor switching element (not shown) are connected in series There is.
- the pair of DC terminals of the three-phase bridge circuit consisting of the bridge circuit of each phase configured as described above is connected to the chargeable / dischargeable DC power supply 17 and the power semiconductor switching element 161 of the upper arm of the bridge circuit of each phase
- the connection point of the power semiconductor switching element 162 of the lower arm is individually connected to the AC terminal of the armature winding of the multiphase rotary electric machine 18.
- the power conversion device 15 configured as described above performs AC-DC power conversion or DC-AC power conversion between the DC power supply 17 and the multiphase rotary electric machine 18.
- the power conversion device 15 since the number of phases of the multiphase rotary electric machine 18 is three, the power conversion device 15 includes a phase bridge circuit 191 as a U phase bridge circuit, a phase bridge circuit 192 as a V phase bridge circuit, and a W phase A phase bridge circuit 193 is provided as a bridge circuit.
- Each phase bridge circuit 191, 192, 193 has a gate drive unit 20 for turning on or off the power semiconductor switching elements 161, 162, and a slave communication unit 3 serving as a slave of SPI communication in the gate drive unit 20. Is equipped.
- the power conversion device 15 controls the respective phase bridge circuits 191, 192, 193 based on various information including the operation state of the multiphase rotary electric machine 18 and the failure information in the power conversion device 15. And sends a command to each phase bridge circuit 191, 192, 193 in the control unit 21, or becomes a master of SPI communication to read data from each phase bridge circuit 191, 192, 193.
- a master communication unit 2 is provided. Incidentally, according to the configuration of the master communication unit 2, as described in the first to third embodiments described above, the logic operation unit 4 is provided in the control unit 21 as needed.
- the master communication unit 2 in the control unit 21 and the slave communication unit 3 in each phase bridge circuit 191, 192, 193 The SPI communication is performed between the control unit 21 and each phase bridge circuit 191, 192, 193.
- the master communication unit 2 is a slave in the bridge circuits 191, 192, 193 of all the phases. Since the write command and the write data and the read command are simultaneously output to the communication unit 3, the cost can be reduced by shortening the communication time and thereby enabling the communication processing even with the circuit configuration with low processing capacity, and at the same time for each slave Deviation in operation timing after communication can be reduced.
- the power converter 15 can be simultaneously stopped without variation in time among the bridge circuits of the respective phases. Can. In addition, it is possible to prevent the secondary failure of the power semiconductor switching elements 161 and 162 due to the power concentration of the phase bridge circuits 191, 192 and 193 caused by the variation of the time taken to stop.
- the master communication unit 2 issues read commands simultaneously from each slave communication unit 3, the data is continuously read individually from each slave communication unit 3, so communication time can be shortened, that is, communication efficiency can be improved. Can.
- the embodiment can be appropriately modified or omitted within the scope of the invention.
- the present invention relates to a communication apparatus performing SPI communication in a full-duplex communication system, in particular, the field of a communication apparatus having at least two slaves for one master, and the field of a power conversion apparatus using the same. It can be used for
- Reference Signs List 1 communication apparatus 2 master communication unit, 3, 31, 3n slave communication unit, 4 logical operation unit, 5, 51, 5n, 50 AND circuit, 6, 61, 6n OR circuit, 71, 7n three-state buffer, 8 XOR Circuit, 91, 9n RS latch circuit, 10 NOR circuit, 111, 11n counter circuit, 12 first counter circuit, 13 second counter circuit, 14 third counter circuit, 15 power converter, 161, 162 power semiconductor Switching elements, 17 DC power supplies, 18 multiphase rotating electric machines, 191, 192, 193 phase bridge circuits, 20 gate drivers, 21 controllers.
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Abstract
Description
マスタとなるマスタ通信部と、前記マスタ通信部に対してスレーブとなるスレーブ通信部とを備え、SPIを用いてシリアル通信を行なう通信装置であって、
前記スレーブ通信部は、前記マスタ通信部に対して複数設けられており、
前記マスタ通信部は、前記複数のスレーブ通信部に対して同時に通信信号を出力する、
ことを特徴とする。
夫々パワー半導体スイッチング素子を備えた上アームと下アームを直列接続して構成された複数個の相ブリッジ回路を並列接続すると共に、前記各相ブリッジ回路の両端が充放電可能な直流電源に接続され、前記各相ブリッジ回路に於ける前記直列接続された接続点が多相回転電機の電機子巻線の交流端子に夫々接続され、前記直流電源と前記多相交流回転電機との間で電力変換を行う電力変換装置であって、
マスタ通信部を備えた制御部と、
前記複数個の相ブリッジ回路に設けられ、夫々スレーブ通信部を備えたゲート駆動部と、
を備え、
前記マスタ通信部と前記スレーブ通信部は、請求項1から10のうちの何れか一項に記載の通信装置を用いて通信を行い、
前記通信装置による前記通信に基づいて前記各相ブリッジ回路の駆動を制御する、
ことを特徴とする。
図1は、この発明の実施の形態1に係る通信装置の構成を示すブロック図である。図1に示すように、通信装置1は、1つのマスタ通信部2と、2つのスレーブ通信部31、3nとを有し、更に、マスタ通信部2と複数のスレーブ通信部31、3nとの通信経路に挿入された論理演算部4を備える。
次に、この発明の実施の形態2による通信装置について説明する。図4は、この発明の実施の形態2に係る通信装置の構成を示すブロック図である。図4に示す実施の形態2による通信装置は、図1に示した実施の形態1による通信装置と比較すると、マスタ通信部2は、スレーブ選択信号CSを送信するスレーブ選択信号線CSが1本のみとなり、論理演算部4を介さず、各スレーブ通信部31、3nのスレーブ選択信号線CSに直接接続されている。マスタ通信部2からのデータ出力信号MOSIは、各スレーブ通信部31、3nのデータ入力信号線SDIに入力される。
次に、この発明の実施の形態3による通信装置について説明する。図7は、この発明の実施の形態3に係る通信装置の構成を示すブロック図である。図1に示した実施の形態1による通信装置と比較すると、図7に示すこの発明の実施の形態3による通信装置では、マスタ通信部2は、スレーブ選択信号CSが1本のみとなり、このスレーブ選択信号CSは分岐して、論理演算部4、及び各スレーブ通信部31、3nのスレーブ選択信号CSに直接接続されている。
次に、この発明の実施の形態4による通信装置について説明する。図10は、この発明の実施の形態4に係る通信装置の構成を示すブロック図である。図1に示した実施の形態1による通信装置と比較すると、図10では、論理演算部4がなく、マスタ通信部2は、スレーブ選択信号CSが1本のみとなり、スレーブ通信部31、3nの数と同じく2本のデータ入力信号線MISO_1、MISO_nを備え、各データ入力信号線は、夫々スレーブ通信部31、3nのデータ出力信号SDOに接続されている。
次に、この発明の実施の形態5による電力変換装置について説明する。図12は、この発明の実施の形態5に係る電力変換装置の構成を示すブロック図である。図12に示すように、電力変換装置15は、パワー半導体スイッチング素子161からなるU相上アームとパワー半導体スイッチング素子162からなるU相下アームとを直列接続したU相アームとしてのU相ブリッジ回路191を備えている。同様に、パワー半導体スイッチング素子(図示せず)からなるV相上アームとパワー半導体スイッチング素子(図示せず)からなるV相下アームとを直列接続したV相アームとしてのV相ブリッジ回路192と、パワー半導体スイッチング素子(図示せず)からなるW相上アームとパワー半導体スイッチング素子(図示せず)からなるW相下アームとを直列接続したW相アームとしてのW相ブリッジ回路193を備えている。
Claims (10)
- マスタとなるマスタ通信部と、前記マスタ通信部に対してスレーブとなるスレーブ通信部とを備え、SPIを用いてシリアル通信を行なう通信装置であって、
前記スレーブ通信部は、前記マスタ通信部に対して複数設けられており、
前記マスタ通信部は、前記複数のスレーブ通信部に対して同時に通信信号を出力する、
ことを特徴とする通信装置。 - 前記マスタ通信部は、前記複数のスレーブ通信部に対して同時に読み込み指令信号を出力し、前記複数のスレーブ通信部が出力するデータ信号を、前記スレーブ通信部毎に順次連続して読み込む、
ことを特徴とする請求項1に記載の通信装置。 - 前記マスタ通信部は、前記複数のスレーブ通信部に対して同時に書き込み指令信号を出力し、前記スレーブ通信部毎に順次連続してデータ信号を書き込む、
ことを特徴とする請求項1に記載の通信装置。 - 前記マスタ通信部と前記スレーブ通信部との通信経路に設置され、入力信号に対して予め定められた論理演算を実施して出力信号を発生する論理演算部を備え、
前記論理演算部は、前記マスタ通信部が通信信号を出力する間、前記論理演算により、予め定められた優先順位に基づいて前記複数のスレーブ通信部のうちの最も優先順位の高いスレーブ通信部の通信信号のみを前記マスタ通信部へ出力する、
ことを特徴とする請求項1から3のうちの何れか一項に記載の通信装置。 - 前記マスタ通信部と前記スレーブ通信部との通信経路に設置され、入力信号に対して予め定められた論理演算を実施して出力信号を発生する論理演算部を備え、
前記マスタ通信部は、前記複数のスレーブ通信部の数と同一の数のスレーブ選択信号線を有し、
前記論理演算部に入力される前記入力信号は、前記マスタ通信部が前記スレーブ選択信号線を介して出力するスレーブ選択信号と、前記マスタ通信部が出力する同期クロック信号とを含み、
前記論理演算部は、前記スレーブ選択信号と前記同期クロック信号に対して前記論理演算を実施し、前記論理演算に基づく同期クロック信号を前記スレーブ通信部へ出力する、
ことを特徴とする請求項1から4のうちの何れかに一項に記載の通信装置。 - 前記マスタ通信部は、前記複数のスレーブ通信部の全てに接続される1本のスレーブ選択信号線と、前記複数のスレーブ通信部の数と同一の数の同期クロック信号線とを有し、前記スレーブ選択信号線により送信するスレーブ選択信号を有意にした状態で、前記複数のスレーブ通信部に個別に前記同期クロック信号線を介して同期クロックを出力する、
ことを特徴とする請求項1から4のうちの何れかに一項に記載の通信装置。 - 前記マスタ通信部と前記スレーブ通信部との通信経路に設置され、入力信号に対して予め定められた論理演算を実施して出力信号を発生する論理演算部を備え、
前記論理演算部は、前記マスタ通信部が出力する前記同期クロック信号と、前記スレーブ通信部が出力するデータ信号とを入力とし、前記複数のスレーブ通信部毎に個別に前記同期クロック信号が出力されている間、前記複数のスレーブ通信部のうち通信対象のスレーブ通信部のデータ信号のみを前記マスタ通信部へ出力するように前記論理演算を実施する、
ことを特徴とする請求項6に記載の通信装置。 - 前記マスタ通信部は、前記複数のスレーブ通信部の数と同一の数のデータ信号線を有し、
前記論理演算部は、前記マスタ通信部と前記スレーブ通信部が出力する全ての信号を入力とし、前記マスタ通信部が出力する指令が書き込み指令であると判断したときは、前記マスタ通信部が出力する同期クロック信号をそのまま前記複数のスレーブ通信部へ出力し、前記マスタ通信部が出力する指令が読み込み指令であると判断したときは、予め決められた優先順位に基づいて通信対象となる前記スレーブ通信部毎に前記マスタ通信部が出力する前記同期クロック信号を出力すると共に、前記スレーブ通信部が出力するデータ信号を前記マスタ通信部へ出力する、
ことを特徴とする請求項4に記載の通信装置。 - 前記マスタ通信部は、前記複数のスレーブ通信部の全てに接続される1本の出力信号線と、前記複数のスレーブ通信部の数と同一の数の入力信号線を備える、
ことを特徴とする請求項1又は2に記載の通信装置。 - 夫々パワー半導体スイッチング素子を備えた上アームと下アームを直列接続して構成された複数個の相ブリッジ回路を並列接続すると共に、前記各相ブリッジ回路の両端が充放電可能な直流電源に接続され、前記各相ブリッジ回路に於ける前記直列接続された接続点が多相回転電機の電機子巻線の交流端子に夫々接続され、前記直流電源と前記多相交流回転電機との間で電力変換を行う電力変換装置であって、
マスタ通信部を備えた制御部と、
前記複数個の相ブリッジ回路に設けられ、夫々スレーブ通信部を備えたゲート駆動部と、
を備え、
前記マスタ通信部と前記スレーブ通信部は、請求項1から10のうちの何れか一項に記載の通信装置を用いて通信を行い、
前記通信装置による前記通信に基づいて前記各相ブリッジ回路の駆動を制御する、
ことを特徴とする電力変換装置。
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US10496576B2 (en) | 2019-12-03 |
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US20180267915A1 (en) | 2018-09-20 |
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