KR100555700B1 - Booting control device to be included a DSP using an USB cable and controlling method therefore - Google Patents

Abstract

The present invention is connected to a USB port of the downloading device is connected to a USB cable for transmitting a download program, an interface unit for interfacing the download program data input via the USB cable, and a download program interfaced by the interface unit DSP which processes data into digital memory and stores it in flash memory and outputs boot control information after the corresponding download operation is finished, and FPGA (flexible programmable gate array) which resets and boots DSP according to the boot control information of the DSP. Provides a boot control device and a control method of a device equipped with a DSP using a USB cable.

As described above, the present invention includes an FPGA in a boot interface device equipped with a DSP, stores boot information transmitted through a USB cable in the FPGA, downloads all upgrade programs, and then the FPGA uses the boot information to install the DSP. By resetting, not only does an expensive JTAG device need to be used to boot the DSP, but anyone can easily reset the DSP and use the FPGA with the boot information. There is no need to use it every time.

USB cable, DSP, FPGA, boot control information, reset, register, reset block

Description

Booting control device to be included a DSP using an USB cable and controlling method therefore}

BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing explaining the apparatus with DSP which uses the conventional JTAG method.

2 is an explanatory diagram illustrating a device equipped with a DSP using a USB cable of the present invention.

3 is a flowchart of the present invention.

<Detailed Description of Codes>

1: PC 2: USB Cable

3: interface unit 4: flash memory

5: DSP 6: FPGA

7: Register 8: Reset Block

9: boot interface device

The present invention relates to a boot control device for a device equipped with a DSP using a USB cable and a control method thereof. In particular, the present invention provides an FPGA in a boot interface device equipped with a DSP and provides boot information transmitted through a USB cable in the FPGA. It is about boot control device and control method of DSP equipped equipment using USB cable that this FPGA resets DSP by using boot information after downloading all upgrade programs.

In general, MTS (Universal Mobile Telecommunication System) networks can transmit "third generation", broadband packet-based text, digitized voice or video and multimedia data at high speeds of 2 Mbps or higher, regardless of where mobile or computer users are in the world. Provide consistent service. This UMTS network allows computer and telephone users to continue to access the Internet while traveling and have the same performance no matter where they are traveling. Users will use this UMTS service through a combination of terrestrial radio and satellite transmission technology. In addition, the UMTS network includes a base station (Node-B), a base station controller (RNC), a core network (Core network), and the like, which are generally configured in a network form to process radio signals transmitted and received from mobile terminals. Doing. By the way, it is necessary to upgrade the built-in program in the node-B or RNC as necessary, such as, usually between these devices and the user download equipment, such as a PC to download the download signal A boot interface device having a plurality of digital signal processors (DSPs) for processing is used.

Then, referring to FIG. 1, a boot interface device equipped with a DSP of a conventional communication system as described above, a PC 72 converting and transferring a downloading program to a JTAG method through a Joint Test Action Group (JTAG) cable 70. JTAG interface card 73 for interfacing a JTAG PCI card 71, a JTAG-type downloading signal input from the JTAG PCI card 71 via a JTAG cable 70, and the JTAG interface part 73 Digital processing of the downloading signal outputted by the digital signal, stored in the flash memory 74 and re-executing the program by the stored downloading data and the reset operation of the DSP (75) push button ( And a reset management circuit portion 77 for processing by the switching signal of 76.

Here, the JTAG may check hardware test or connection status, and the JTAG is a standard 1149.1-1990, Institute of Electrical and Electronics Engineers (IEEE) standard test access port and boundary-test structure. IEEE Technical Subcommittee that developed the Test Capability Standards as a complement to Scan Architecture. In the mid-70s, we used a technique called "bed-of-nails" to test the boards by directly touching the printed circuit boards (although we still use the same test equipment). However, as the distance between the terminals of the board became narrower, the test became very difficult, and as the multi-layer board appeared crucially, the above method was impossible, and the test could cause damage to the hardware. Many problems have arisen, including high costs and high costs. To address this, an organization called the Joint European Test Access Group was formed in the mid-80s, and they developed the concept of a serial shift register around the boundary of the device. Instead of using the term JTAG, the term boundary-scan is also used. JTAG has a boundary cell inside the chip that connects one-to-one with an external pin to intermediate the processor's actions. All operations can be performed artificially through the cell, allowing you to check various hardware tests or connection statuses.

On the other hand, referring to the operation of the boot interface device equipped with the DSP of the conventional communication system as described above, first, if the administrator needs to upgrade the embedded program of the DSP connected to any system, for example, node-B or RNC The JTAG PCI card 71 of the PC 72 having the loading program is connected to the JTAG interface 73 of the boot interface device 78 provided in the opposite system via the JTAG cable 70. When the PC 72 loads the downloading data into the JTAG PCI card 71, the JTAG PCI card 71 converts the downloading program into the JTAG method, and then JTAG interface through the JTAG cable 70. Transfer to section 73. Then, the JTAG interface unit 73 interfaces the JTAG type downloading signal inputted from the JTAG PCI card 71 through the JTAG cable 70 and inputs it to the DSP 75. The DSP 75 digitally processes the downloading signal output by the JTAG interface unit 73 and stores the digital signal in the flash memory 74.

At this time, after the above process, the DSP 75 should be reset. In this reset method, the user pushes the push button 76 or turns on / off the power to cause the reset management circuitry 77 to reset the DSP 75. ) Is a way to reset. Then, after the DSP 75 reset process, the DSP 75 boots using the newly upgraded boot information from the flash memory 74 and then executes a new program.

However, the boot interface device provided with the DSP of the conventional communication system as described above

In order to download the program and to have a large amount of expensive JTAG equipment to boot the DSP, the download cost of the equipment has increased considerably. Also, each time you download the upgrade program, you must use the JTAG equipment every time. There was also a problem that the download convenience of the equipment is also significantly reduced.

Accordingly, the present invention has been invented to solve the above-mentioned conventional problems, and anyone can easily reset the DSP without having to use expensive JTAG equipment for booting the DSP, thereby reducing the download cost of the equipment. It is an object of the present invention to provide a boot control device and a control method for a device equipped with a DSP using a USB cable that can be significantly reduced.

Another object of the present invention is to use the FPGA with the boot information is stored so that you do not have to use the JTAG device every time you download the upgrade program, according to the DSP is equipped with a USB cable that significantly improves the download convenience of the device accordingly The present invention provides a boot control device and a control method thereof.

The present invention for achieving the above object is a USB cable connected to the USB port of the download device for transmitting a download program, an interface unit for interfacing the download program data input via the USB cable, and the interface Digital processing of downloading program data interfaced by the bus, storing it in flash memory, and outputting boot control information after the corresponding download operation is finished, and resetting and booting the DSP according to the boot control information of the DSP. Provides a boot control device for a device equipped with a DSP using a USB cable consisting of an FPGA.

In another aspect of the present invention, when the boot command signal is input from the downloading device in a device equipped with a DSP, a downloading execution step of downloading a new program from a PC through a USB cable and storing it in a flash memory; After the execution step, if the download completion check step confirms whether the download operation in progress is completed, and the download completion check operation is confirmed by the downloading completion check step, the DSP controls boot control information in the register of the FPGA. A boot control information input step of inputting a signal, a DSP booting step of resetting and rebooting the DSP by the reset block of the FPGA after the boot control information input step, and a program newly downloaded from the flash memory by the DSP after the DSP booting step. USB cable consisting of DSP drive steps to read and execute It provides a control method of the boot control unit of the equipment provided with the DSP.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the apparatus of the present invention interfaces a USB cable 2 connected to a USB port of a PC 1 to transmit a download program, and a download program data input through the USB cable 2. A DSP for digitally processing the program data interfaced by the interface unit 3 and the download program data interfaced by the interface unit 3 and storing the data in the flash memory 4 and outputting boot control information after the corresponding downloading operation is completed. (5) and the FPGA 6 for resetting and booting the DSP 5 in accordance with the boot control information of the DSP 5 above.

Here, the FPGA 6 stores a register 7 for storing boot control information output after the downloading operation is completed by the DSP 5 and, if the boot control information is stored in the register 7, DSP 5. It is composed of a reset block (8) for resetting and booting.

Next, the control method of the present invention as described above will be described.

The method of the present invention proceeds to the initialization step S1 as shown in FIG. 3 to reset and initialize the DSP having the flash memory in which the initial program is stored. Then, after the initialization step (S2) proceeds to the boot command input determination step (S2) to determine whether the boot command signal is input from the PC. At this time, if the boot command signal is not input from the PC as a result of the determination during the boot command input determination step (S2), the current step ends and proceeds to the standby state. However, if the boot command signal is input from the PC as a result of the determination during the boot command input determination step (S2), the process proceeds to the downloading execution step (S3) and the DSP downloads a new program from the PC through the USB cable and stores it in the flash memory. Let's do it. Then, after the downloading execution step (S3) proceeds to the download completion determination step (S4) to determine whether the download operation in progress is completed. At this time, if the downloading complete operation is not completed in step S4, the process returns to the previous step S3 and repeats the loop. However, when the downloading completion operation is completed by the downloading completion determination step (S4), the process proceeds to the boot control information input step (S5) and the DSP inputs the boot control information into the register of the FPGA. In addition, after the boot control information input step S5, the process proceeds to the DSP booting step S6, and the reset block of the FPGA resets and reboots the DSP. After the DSP booting step S6, the process proceeds to the DSP driving step S7, where the DSP reads and executes the newly downloaded program from the flash memory.

In other words, if the administrator needs to upgrade the built-in program of the DSP (5) connected to any system, such as node-B or RNC, via the USB cable (2) in the PC (1) with the download program embedded It is connected to the interface unit 3 of the boot interface device 9 provided in the opposing system. Then, the PC 1 transmits the download data to the interface unit 3 via the USB cable 2 after transmitting the boot command. Then, the interface unit 3 interfaces the downloading program data input through the USB cable 2 and inputs it to the DSP 5. The DSP 5 digitally processes the downloading signal output by the interface unit 3 and stores the digital signal in the flash memory 4. At this time, the DSP 5 inputs the boot control information into the register 7 of the FPGA 6 when the ongoing downloading operation is completed. Then, the reset block 8 of the FPGA 6 resets and reboots the DSP 5 according to the boot control information. Therefore, the DSP 5 reads the newly downloaded program from the flash memory 4 and executes it.

As described above, the present invention includes an FPGA in a boot interface device equipped with a DSP, stores boot information transmitted through a USB cable in the FPGA, downloads all upgrade programs, and then uses the FPGA boot information. By resetting the DSP, anyone can easily reset the DSP without having to use expensive JTAG equipment to boot the DSP, which has the advantage of significantly reducing the downloading cost of the equipment.

In addition, according to the present invention, since the FPGA stores the boot information, the JTAG device does not need to be used every time the upgrade program is downloaded, and thus the convenience of downloading the device is also significantly improved.

Claims (3)

A USB cable connected to the USB port of the downloading device to transfer the downloading program, an interface unit for interfacing the download program data input through the USB cable, and a download program data interfaced by the interface unit. A USB cable comprising a DSP which processes a signal, stores it in a flash memory and outputs boot control information after the corresponding download operation is finished, and an FPGA which resets and boots the DSP according to the boot control information of the DSP. Boot control device for equipment equipped with DSP. The method of claim 1, wherein the FPGA has a register for storing the boot control information output after the DSP has finished the download operation, and a reset block for resetting and booting the DSP when the boot control information is stored in the register; Boot control device equipped with a DSP using a USB cable, characterized in that it comprises a. When the boot command signal is input from the downloading device in a device equipped with a DSP, a download execution step in which the DSP downloads a new program from a PC through a USB cable and stores it in a flash memory; and the download currently in progress after the downloading execution step. The booting completion information for checking the completion of the loading operation, and if the downloading is completed by the downloading completion confirmation step, the DSP inputs boot control information into the register of the FPGA. A DSP booting step in which a reset block of the FPGA resets and reboots the DSP after the inputting step and the booting control information inputting step; and a DSP that reads and executes a newly downloaded program from the flash memory after the DSP booting step. Using a USB cable, characterized in that the drive step Control method of boot control device of equipment equipped with DSP.

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