JP3625232B2 - Communication path device access method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speech path device access method for accessing each speech path device from a central processing unit in an electronic exchange having a plurality of speech path devices and a central processing unit that controls each speech path device.
[0002]
[Prior art]
FIG. 3 shows a configuration of a conventional speech path device access method.
[0003]
In FIG. 3, 2 is a plurality of speech path devices (MDL), 3 is a central processing unit (CPE) that controls the speech path device 2, and 4 is an access to the speech path device 2 by the central processing unit 3. It is a speech path control device (SPC) that relays, that is, relays orders from the central processing unit 3 to the speech path device 2 and relays data transmitted and received between both devices.
[0004]
Each speech path device 2 has a plurality of speech path packages (PCG) 31 mounted thereon, and each speech path device 2 is assigned a module number (MDL0 to MDLn). Package numbers (PCG0 to PCG4) are assigned.
[0005]
In the speech path control device 4, 41 is a serial data transmission unit that converts the access address and transmission data from the central processing unit 3 into serial data and sends it to the speech path package 31, and 42 is the access address from the central processing unit 3. A serial data control unit 14 for receiving and controlling the serial data transmission unit 41 and a transmission data buffer (BUF) for temporarily storing transmission data from the central processing unit 3 are shown.
[0006]
Reference numeral 15 denotes a serial data receiving unit that receives serial data from the speech path package 31, and 16 denotes a reception data buffer (BUF) that temporarily stores data received by the serial data receiving unit 15.
[0007]
Reference numeral 17 denotes a central processing unit 3 connected to the serial data control unit 42 and serial data transmission unit 41. The central processing unit 3 sends an access address to the parallel bus for addressing, 18 denotes the central processing unit 3 and the transmission data buffer 14 and A parallel bus for data connecting the reception data buffer 16, 43 a serial bus for data transmission connecting the serial data transmission unit 41 and each speech path device 2, and 22 connecting the serial data reception unit 15 and each speech path device 2. A serial bus for data reception is shown.
[0008]
Next, FIG. 4 shows a data write access operation in the conventional speech path device access method.
[0009]
4, the central processing unit 3, a speech path package 31 with a channel device 2 is the time _{T 1,} starts access to, for example, the speech path package PCG1 the channel device MDL0, showing the PCG1 this MDL0 access The address and data (transmission data) to be written to PCG1 of MDL0 are sent to address parallel bus 17 and data parallel bus 18, respectively, and the transmission data is temporarily stored in transmission data buffer 14 of speech path control device 4.
[0010]
In the communication path control device 4, when the serial data control unit 42 receives the access address, the serial data transmission unit 41 is operated by transmitting a control signal, and the serial data transmission unit 41 is accessed from the address parallel bus 17. the address, also converted into serial data capture each transmission data from the transmission data buffer 14, and starts sending at time T _2, the data transmission serial bus 43 of the serial data, the transmission time T _2' finish.
[0011]
Speech path package PCG1 the channel device MDL0 starts receiving serial data from the data transmission serial bus 43 at time T _3, the reception ends at time T _3', access time T ₄ by the central processing unit 3 A response signal (ACK signal) is sent to the data receiving serial bus 22.
[0012]
Speech path control device 4 receives an ACK signal from the data receiving serial bus 22, and sends an ACK signal at time T ₅ to the central processing unit 3.
[0013]
That is, the serial data receiving unit 15 receives an ACK signal from the data receiving serial bus 22 and converts it into parallel data, and sends this ACK signal to the data parallel bus 18 via the received data buffer 16.
[0014]
The central processing unit 3 by receiving the ACK signal from the data parallel bus 18, and terminates the access to the speech path package 31 at time T _6.
[0015]
As a result, the central processing unit 3 can start the same access as described above with respect to the speech path package 31 of another package number or the speech path apparatus 2 (the speech path package 31) of another module number. .
[0016]
As described above, in the conventional speech path device access method, data reception in the accessed speech path package (for example, PCG1 of MDL0) is completed, and after receiving an ACK signal from the speech path package, the next speech path package (for example, Access to PCG2) of MDL2.
[0017]
[Problems to be solved by the invention]
However, in the above-described conventional speech path device access method, the central processing unit starts accessing the next speech path package after ending access to one speech path package. When the number of road packages increases, there is a problem that the access capability of the central processing unit decreases.
[0018]
The present invention solves such a conventional problem and aims to improve the access capability of a central processing unit to a speech path device.
[0019]
[Means for Solving the Problems]
In order to achieve the above object, a speech path device access method according to the present invention is an electronic exchange comprising a plurality of speech path devices and a central processing unit that controls each speech path device. A speech path device access method for accessing a speech path device, wherein the plurality of speech path devices are grouped to be provided for each speech path block configured by speech path devices of the same group, from the central processing unit The access address and data sent out are fetched and sent to the corresponding speech path block, and a data transmission means for setting a flag indicating that the speech path block is in operation, and the speech path block corresponding to the access address are accessible whether determined on the basis of the flag setting, if accessible, this call path block Together operate by selecting the data transmission means to respond, characterized in that the control means for returning a response signal to said central processing unit provided in the speech path equipment.
[0020]
Therefore, according to the speech path device access method of the present invention, when the access address and data are transmitted from the central processing unit, the control means determines whether the speech path block corresponding to this access address is accessible, If it is accessible, the data transmission means corresponding to this block block is selected and operated, and a response signal is returned to the central processing unit, and sent from the central processing unit by the selected data transmission unit. The central processing unit receives the response signal from the control means without waiting for the completion of data reception of the speech path block, that is, the selected access address and data, and sends it to the corresponding speech path block. When the data transmission means starts operation, access to another block block is changed to another data block. Since it can be started by the transmission means, it is possible to reduce the waiting time of the central processing unit from the transmission of the access address and data to the start of the next access, and the access capability of the central processing unit to the speech path device Can be improved.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0022]
FIG. 1 is a block diagram showing the configuration of the embodiment of the present invention.
[0023]
In the present embodiment, one speech path block is constituted by two speech path devices, and there are three speech path blocks.
[0024]
1, 2 channel device which is provided a plurality (MDL), 3 is a central processing unit for controlling the channel device 2 (CPE), 1 is the access against the channel device 2 by the central processing unit 3 It is a speech path control device (SPC) that relays, that is, relays orders from the central processing unit 3 to the speech path device 2 and relays data transmitted and received between both devices.
[0025]
Each speech path device 2 is equipped with a plurality of speech path packages (PCG) 31, and each of the two speech path devices 2 constitutes one speech path block 32.
[0026]
Module numbers (MDL0 to MDL5) are assigned to each speech path device 2, blocks (BLK0 to BLK2) are assigned to each speech path block 32, and each speech path package 31 has a package. Numbers (PCG0 to PCG4) are assigned.
[0027]
In the speech path control device 1, 11 is provided corresponding to each speech path block 32, converts the access address and transmission data from the central processing unit 3 into serial data, and the speech path of the corresponding speech path block 32. The serial data transmission unit 12 to be sent to the package 31 receives and expands the access address from the central processing unit 3, determines whether or not the speech path block 32 corresponding to this access address is accessible, and is accessible. If there is, a serial data control unit 13 for selecting and operating the serial data transmission unit 11 corresponding to the communication path block 32 and returning a response signal (ACK signal) to the central processing unit 3. A flag setting unit for setting a flag indicating the operation state of the block 32, 14 is provided from the central processing unit 3. Transmission data buffer for storing signal data temporarily (BUF) respectively show.
[0028]
Reference numeral 15 denotes a serial data receiving unit that receives serial data from the channel package 31 of each channel block 32, and 16 denotes a reception data buffer (BUF) that temporarily stores data received by the serial data receiving unit 15. .
[0029]
Reference numeral 17 denotes a central processing unit 3 connected to the serial data control unit 14 and the serial data transmission unit 11, and the central processing unit 3 sends an access address to the parallel bus for addressing. 18 denotes the central processing unit 3, the transmission data buffer 14 and A parallel bus for data connecting the reception data buffer 16, 19 to 21 are serial buses for data transmission connecting the serial data transmission unit 11 and each speech path block 32, and 22 is a serial data reception unit 15 and each speech path device 2. Each of the serial buses for data reception to be connected is shown.
[0030]
Next, FIG. 2 shows a data write access operation in the present embodiment.
[0031]
FIG. 2 shows access to the speech path block 32 with block numbers BLK0 and BLK1.
[0032]
2, the central processing unit 3, a speech path package 31 with a channel device 2 at time _{T 10} a speech channel block BLK0, starts access to, for example, the speech path package PCG1 the channel device MDL0, this MDL0 The access address indicating PCG1 and data (transmission data) to be written to PCG1 of MDL0 are sent to address parallel bus 17 and data parallel bus 18, respectively, and the transmission data is temporarily stored in transmission data buffer 14 of speech path control device 1. Stored in
[0033]
In the speech path control device 1, the serial data control unit 12, receives and expand access address at time T _11, recognizes that the block number of the data transmission destination is BLK0.
[0034]
Next, the serial data control unit 12 determines whether or not the speech path block BLK0 is accessible based on the flag of the speech path block BLK0 set in the flag setting unit 13, and if it is accessible, the time It is operated to select the serial data transmission unit 11 corresponding to the speech path block BLK0 by transmitting a control signal in T _12, the serial data transmission unit 11 corresponding to the speech path block BLK0 is from the serial data controller 12 in accordance with the control signals, sent from the address for the parallel bus 17 to access the address, also to serial converted data to, the serial data at time T ₁₃ for data transmission serial bus 19 takes in each transmission data from the transmission data buffer 14 To start.
[0035]
At the same time the serial data controller 12 during the operation flag of the speech path block BLK0 of the flag portion 13 at time T ₁₂ to change to a value indicating (inaccessible), the data parallel bus 18 via the receive data buffer 16 A response signal (ACK signal) is transmitted.
[0036]
In the speech path block BLK0, the speech path package PCG1 the channel device MDL0 starts receiving serial data from the data transmission for serial bus 19 at time _{T 14.}
[0037]
The central processing unit 3 by receiving the ACK signal from the serial data control unit 12 at time T _15, and ends the data write access to the speech path block BLK0.
[0038]
Next, in the speech path control device 1, the serial data control unit 12 recognizes that the serial data transmission unit 11 corresponding to the speech path block BLK0 is completed the transmission of all the serial data at time T _16, the flag setting unit 13 The flag of the communication path block BLK0 is returned to a value indicating non-operation (accessible).
[0039]
In the data write access to the speech path block BLK0 described above, the serial data transmission unit 11 corresponding to the speech path blocks BLK1 and BLK2 does not transmit serial data.
[0040]
Next, the operation when accessing another speech path block BLK1 following access to the speech path block BLK0 will be described.
[0041]
The central processing apparatus 3 ends the data write access at time _{T 15} to the speech channel block BLK0, the speech path package 31 with a channel device 2 with a communication path blocks BLK1 at time _{T 17,} for example of a channel device MDL3 Access to the speech path package PCG0 is started, and the access address and transmission data are sent to the address parallel bus 17 and the data parallel bus 18, respectively.
[0042]
In the speech path control device 1, the serial data control unit 12, in the same manner as described above, to recognize that the block number of the data transmission destination is BLK1 at time T _18, the speech path block BLK1 is whether accessible judgment, if accessible, at time T ₁₉ is operated to select the serial data transmission unit 11 corresponding to BLK1, serial data transmission unit 11 corresponding to BLK1 takes in the access address and the transmission data respectively serially is converted into data, at time T ₂₀ starts sending the data transmission serial bus 20 of the serial data.
[0043]
At the same time the serial data controller 12, the flag of the speech path block BLK1 changed to a value indicating that the operation (inaccessible) at time T _19, and sends a response signal (ACK signal) to the central processing unit 3.
[0044]
In the speech path block BLK1, a speech path package PCG0 the channel device MDL3 starts receiving serial data from the data transmission for serial bus 20 at time _{T 21,} also a central processing unit 3, the serial data at time _{T 22} By receiving the ACK signal from the control unit 12, the data write access to the speech path block BLK1 is terminated.
[0045]
Next, in the speech path control device 1, the serial data control unit 12 recognizes that the serial data transmission unit 11 corresponding to the speech path block BLK1 has finished the transmission of all the serial data at time T _23, a speech path block BLK1 Is returned to a value indicating non-operation (accessible).
[0046]
Next, an operation when the speech path block 32 corresponding to the access address is not accessible (operating) will be described.
[0047]
The central processing apparatus 3 ends the data write access at time _{T 22} to the speech channel block BLK1, a speech path package 31 with a channel device 2 at time _{T 30} a speech channel block BLK0, for example of a channel device MDL0 Access to the speech path package PCG2 is started, and the access address and transmission data are sent to the address parallel bus 17 and the data parallel bus 18, respectively.
[0048]
In the speech path control device 1, the serial data control unit 12, in the same manner as described above, to recognize that the block number of the data transmission destination is the BLK0 at time T _31, the speech path block BLK0 whether accessible In this case, since the transmission of the previous serial data has not ended, the flag of the speech path block BLK0 indicates that it is operating (access is impossible), and therefore it is determined that access is impossible.
[0049]
In this case, the serial data control unit 12, after recognizing that the previous transmission of the serial data is completed at time T _16, the return flag of the speech path blocks BLK0 to a value indicating a non-operation (accessible), time the serial data transmission unit 11 corresponding to T ₃₂ in BLK0 is operated to select the same manner as described above, and change in value at the same time indicating that the operation flag of the speech path block BLK0 (inaccessible), to the central processing unit 3 Response signal (ACK signal).
[0050]
The central processing unit 3 by receiving the ACK signal from the serial data control unit 12 at time T _33, and ends the second time data write access to the speech path block BLK0.
[0051]
The write access to the speech path block BLK2 also operates in the same manner as described above.
[0052]
The data read access operation for the speech path package 31 from the final central processing unit 3 will be described.
[0053]
In this case, the serial data controller 12 check by the flag that the call path block 32 corresponding to the access address in the same manner as the write access is accessible, the operation to select the corresponding serial data transmission unit 11 However, the ACK signal is not sent to the central processing unit 3.
[0054]
The corresponding communication path block 32 that has received the serial data from the serial data transmission unit 11 converts the read data (response data) into serial data and sends it to the data receiving serial bus 22, and then sends an ACK signal.
[0055]
The serial data receiving unit 15 receives this read serial data and converts it into parallel data, transmits this read data to the central processing unit 3, subsequently receives an ACK signal and transmits it to the central processing unit 3.
[0056]
The central processing unit 3 receives the read data and then receives the ACK signal, thereby completing the data read access.
[0057]
As described above, according to the embodiment of the present invention, when the access address and data are transmitted from the central processing unit 3, whether or not the speech path block 32 corresponding to the access address can be accessed by the serial data control unit 12 is determined. Is determined based on the flag indicating the operation state of the corresponding speech path block 32 set in the flag setting section 13, and if accessible, the serial data transmission section 11 corresponding to the speech path block 32 is determined. This is selected and operated, and an ACK signal is returned to the central processing unit 3, and the access address and data sent from the central processing unit 3 are taken in by the selected serial data transmission unit 11 and converted into serial data. Then, by sending it to the corresponding speech path block 32, the central processing unit 3 causes the speech path block. Without waiting for the completion of data reception of the network 32, when the ACK signal is received from the serial data control unit 12, that is, when the selected serial data transmission unit starts operation, the access to another speech path block 32 is performed. Since it can be started by another serial data transmission unit 11, the waiting time of the central processing unit 3 from the transmission of the access address and data to the start of the next access can be shortened. It is possible to improve the access capability of the communication path device 2.
[0058]
In the present embodiment, the case where two speech path devices are divided into three speech path blocks is shown. However, when the number of speech path devices is increased, the speech path devices are accordingly increased. By increasing the number of blocks, serial buses for data transmission, and serial data transmission units, the access capability can be improved as in the present embodiment.
[0059]
【The invention's effect】
Therefore, according to the speech path device access method of the present invention, when the access address and data are transmitted from the central processing unit, the control means causes the data transmission means corresponding to the speech path block corresponding to the access address of the central processing unit to be sent. This is selected and operated, and a response signal is sent back to the central processing unit, and the access address and data sent from the central processing unit are taken in by the selected data transmission means and sent to the corresponding speech path block. As a result, the central processing unit does not wait for the completion of data reception of the speech path block, and starts access to another speech path block by another data transmission means when the selected data transmission means starts operating. Since the access address and data are sent, the next access is started. It is possible to shorten the waiting time of the central processing unit until the has the effect that it is possible to improve the access capability for a channel device of the central processing unit.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.
FIG. 2 is a diagram showing a data write access operation in the embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of a conventional speech path device access method.
FIG. 4 is a diagram showing a data write access operation in a conventional speech path device access method.
[Explanation of symbols]
1. Communication path control device (SPC)
2 Call path device (MDL)
3 Central processing unit (CPE)
11 Serial Data Transmission Unit 12 Serial Data Control Unit 13 Flag Setting Unit 14 Transmission Data Buffer (BUF)
15 Serial data receiver 16 Received data buffer (BUF)
17 Parallel bus for address 18 Parallel bus for data 19-21 Serial bus for data transmission 22 Serial bus for data reception

Claims (1)

In an electronic exchange comprising a plurality of speech path devices and a central processing unit for controlling each speech path device, a speech path device access method for accessing each speech path device by the central processing unit,
A plurality of speech path devices are grouped to provide a speech path block that is provided for each speech path block constituted by speech path devices in the same group and takes in an access address and data sent from the central processing unit. And a data transmission means for setting a flag indicating that the speech path block is in operation ,
Whether or not the speech path block corresponding to the access address is accessible is determined based on the flag setting, and if accessible, the data transmission unit corresponding to the speech path block is selected and operated, and channel device access method is characterized by providing a control means for returning a response signal to the central processing unit to the speech path equipment.

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