CN102750243A - Easily-debugged embedded system of complex SD (secure digital) interface - Google Patents

Easily-debugged embedded system of complex SD (secure digital) interface Download PDF

Info

Publication number
CN102750243A
CN102750243A CN2012102322034A CN201210232203A CN102750243A CN 102750243 A CN102750243 A CN 102750243A CN 2012102322034 A CN2012102322034 A CN 2012102322034A CN 201210232203 A CN201210232203 A CN 201210232203A CN 102750243 A CN102750243 A CN 102750243A
Authority
CN
China
Prior art keywords
debugging
interface
jtag
embedded system
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2012102322034A
Other languages
Chinese (zh)
Other versions
CN102750243B (en
Inventor
余为国
张钦
张震生
王磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SINO WEALTH ELECTRONIC CO Ltd
Original Assignee
SINO WEALTH ELECTRONIC CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SINO WEALTH ELECTRONIC CO Ltd filed Critical SINO WEALTH ELECTRONIC CO Ltd
Priority to CN201210232203.4A priority Critical patent/CN102750243B/en
Publication of CN102750243A publication Critical patent/CN102750243A/en
Application granted granted Critical
Publication of CN102750243B publication Critical patent/CN102750243B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Tests Of Electronic Circuits (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Debugging And Monitoring (AREA)

Abstract

The invention provides an easily-debugged embedded system of a complex SD (secure digital) interface. The easily-debugged embedded system comprises a system main frame and an SD/debugging patch panel, wherein the system main frame comprises a main control chip and an SD interface, the main control chip is internally provided with an SD/debugging inner circuit; one end of the SD interface is connected with the SD/debugging inner circuit; and the SD/debugging patch panel is respectively connected with the other end of the SD interface and a debugging tool and is used for converting the SD interface into a debugging interface. The invention solves the problem that the debugging interface is guided out inconveniently, and a shell needs to be disassembled so that the efficiency is low and the shell is easy to break during disassembly in products of a main frame of a relatively applied embedded system when problem debugging or program updating is carried out through the debugging interface by utilizing a design method of multiplexing signal lines of the SD interface and the debugging interface, so that the great convenience can be provided for a product repair debugging and program updating process, and influences on the use experience of a user and the cost of a whole machine can be avoided.

Description

Easy the to be debugging embedded system of multiplexing SD interface
Technical field
The present invention relates to the embedded system technology field, specifically, the present invention relates to a kind of easy to be debugging embedded system of multiplexing SD interface.
Background technology
In existing embedded system (Embedded System), no matter be the early development of main control chip, the still maintenance of follow-up machine system, the use of debugging acid is all extremely important.Usually all leave debugging interface during the main control chip design, be used for the application development debugging.Machine system confirm can volume production after, actual product can't be drawn debugging interface, because the user need not use, also can not stay corresponding interface in order to avoid influence attractive in appearance on the mould of product.But product volume postpartum if go wrong in the time of need searching reason through debugging acid, often need be opened product casing, the debugging interface bonding wire is drawn debug, and the obviously not only loaded down with trivial details inconvenience of process might destroy the outer casing mold of product simultaneously.
In addition, the debugging interface that before had been mainly used in chip internal test and programmable chip online programming all is to draw separately, not only take printed circuit board (PCB) (PCB) area, and spill process is also pretty troublesome.On complete machine was used, this interface only kept on PCB and draws solder joint usually, and follow-up will drawing must be opened casing, and soldered wires is so very inconvenient.
Summary of the invention
Technical matters to be solved by this invention provides a kind of easy to be debugging embedded system of multiplexing SD interface, can solve the embedded product debugging interface and draw inconvenient problem, is very easy to product and reprocesses debugging and program upgrade.
For solving the problems of the technologies described above, the present invention provides a kind of easy to be debugging embedded system of multiplexing SD interface, comprising:
System host comprises:
Main control chip includes SD/ debugging internal circuit in it;
The SD interface, an end is connected with said SD/ debugging internal circuit;
SD/ debugs card extender, is connected with a debugging acid with the other end of said SD interface respectively, and being used for said SD interface conversion is debugging interface.
Alternatively, said debugging interface is a jtag interface, and then said SD/ debugging card extender, said debugging acid and said SD/ debugging internal circuit are respectively SD/JTAG card extender, JTAG debugging acid and SD/JTAG internal circuit.
Alternatively, said SD interface is connected with said SD/ debugging internal circuit with 6 line connected modes of standard, and said 6 lines comprise the data line of clock line, order wire and 4 bit wides.
Alternatively, said jtag interface is 4 line connected modes of standard, and said 4 lines comprise model selection line, clock line, Data In-Line and DOL Data Output Line.
Alternatively, said system host is insertion-card MP 3 player or card reader.
Alternatively, said main control chip is MCU, DSP or FPGA device.
Compared with prior art, the present invention has the following advantages:
The present invention adopts the multiplexing method for designing of the signal wire of SD interface and debugging interface; The embedded system main computer boxes that has solved related application is when needs carry out problem debugging or program upgrade through debugging interface; Debugging interface is drawn inconvenience; Need take the poor efficiency of shell and the problem of destructible apart, be very easy to product and reprocess debugging and program upgrade process, and user's experience and complete machine cost had no influence fully.
Description of drawings
Above-mentioned and other characteristic, character and advantage of the present invention will become more obvious through the description below in conjunction with accompanying drawing and embodiment, wherein:
Fig. 1 is a modular structure synoptic diagram that has the embedded system of SD interface of the prior art;
Fig. 2-a is easy the to be debugging embedded system of the multiplexing SD interface of one embodiment of the invention connects the JTAG debugging acid through the SD/JTAG card extender a modular structure synoptic diagram;
Fig. 2-b is the modular structure synoptic diagram that easy the to be debugging embedded system of the multiplexing SD interface of one embodiment of the invention connects SD equipment;
Fig. 3 is the PCB wiring diagram of SD/JTAG card extender of easy debugging embedded system of the multiplexing SD interface of one embodiment of the invention.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing the present invention is described further; Set forth more details in the following description so that make much of the present invention; But the present invention obviously can implement with the multiple alternate manner that is different from this description; Those skilled in the art can do similar popularization, deduction according to practical situations under the situation of intension of the present invention, therefore should be with content constraints protection scope of the present invention of this specific embodiment.
The most frequently used debugging interface of embedded system is the jtag interface of standard, below be example just with the jtag interface, specifically set forth.JTAG is alphabetical the writing a Chinese character in simplified form of prefix of English " Joint Test Action Group (joint test behavior tissue) ", and this is organized into and stands on 1985, is PCB and the IC testing standard of being initiated formulation by the main electronics manufacturer of several families.JTAG advises being IEEE1149.1-1990 test access port and boundary-scan architecture standard in nineteen ninety by the IEEE approval.This standard code carry out the needed hardware and software of boundary scan, be mainly used in chip internal test.Most now high-grade device are all supported the JTAG agreement, like MCU, DSP, FPGA device etc.The jtag interface of standard is 4 lines: TMS, TCK, TDI, TDO, is respectively model selection line, clock line, Data In-Line and DOL Data Output Line.
For digital equipments such as common insertion-card MP 3 player, card reader, the SD card that all has standard is used for the SD that inserts is sticked into row storage, read and write access operation.And its inner main control chip all can be useful on the jtag interface of debugging or program upgrade usually.
Fig. 1 is a modular structure synoptic diagram that has the embedded system of SD interface of the prior art.The debugging interface that adopts is that example is specifically set forth with the jtag interface.As shown in Figure 1, the critical piece of this embedded system 100 is exactly a system host 101.These system host 101 inside comprise main control chip 104, jtag interface 102 and SD interface 106.Certain system host 101 inside can also comprise some and main control chip 104 carries out all kinds of other module 1~n that signal transmits.Main control chip 104 can be MCU, DSP or FPGA device etc., includes SD internal circuit 1051 and JTAG internal circuit 1052 in it.Jtag interface 102 1 ends are connected with JTAG internal circuit 1052 with 4 line connected modes of standard, and jtag interface 102 other ends are connected with a JTAG debugging acid 103.SD interface 106 1 ends are connected with SD internal circuit 1051 with 6 line connected modes of standard, and SD interface 106 other ends are connected with SD equipment 107.
In above-mentioned embedded system 100, JTAG debugging acid 103 is through jtag interface 102, is connected to that system host 101 is debugged, programming or ROMPaq.Main control chip 104 carries out read-write operation through 106 pairs of SD equipment of SD interface 107.
But it is following not enough that above-mentioned embedded system 100 also exists: debug system, programming or ROMPaq, all need open the shell of system host 101, and bonding wire is drawn jtag interface 102 in addition, could carry out corresponding operating to it.For example, an insertion-card MP 3 player in application if found the defective on some programs, in the time of need upgrading to program, must be by JTAG debugging acid 103.At first need open host housing, on PCB, find JTAG coherent signal line bonding wire to draw then, very inconvenience.Especially in the time of need upgrading to large-tonnage product, not only efficient is low, and possibly cause damage to outward appearance.
Fig. 2-a is easy the to be debugging embedded system of the multiplexing SD interface of one embodiment of the invention connects the JTAG debugging acid through the SD/JTAG card extender a modular structure synoptic diagram.It should be noted that these and follow-up other accompanying drawing all only as an example, it is not to be to draw according to the condition of equal proportion, and should not limit as the protection domain formation to the actual requirement of the present invention with this.
Shown in Fig. 2-a, this embedded system 200 mainly comprises system host 201 and SD/JTAG card extender 202.Wherein, this system host 201 can be digital equipments such as insertion-card MP 3 player or card reader, mainly comprises main control chip 204 and SD interface 206.Certain system host 201 can also comprise some and main control chip 104 carries out all kinds of other module 1~n that signal transmits.Main control chip 204 can include SD/JTAG internal circuit 205 for MCU, DSP or FPGA device etc. in it.SD interface 206 1 ends are connected with SD/JTAG internal circuit 205 (data line DAT0, DAT1, DAT2 and DAT3 that 6 lines comprise clock line CLK, order wire CMD and 4 bit wides) with 6 line connected modes of standard, and the other end is connected with SD/JTAG card extender 202.SD/JTAG card extender 202 is connected with a JTAG instrument 203, is used for converting SD interface 206 into jtag interface.
The present invention is through revising main control chip 204 indoor designs; Part signal pin multiplexing with JTAG signal and SD; Because the SD interface 206 of standard is 6 lines: CLK, CMD, DAT0, DAT1, DAT2, DAT3, promptly be respectively the data line of clock, order and 4 bit wides.Multiplexing scheme can be shown in Fig. 2-a, 2-b; TDI, TCK, TDO, the TMS line of jtag interface 102 is multiplexing with CMD, DAT0, DAT1, the DAT2 line of SD interface 206 respectively; Therefore the JTAG signal can be directly from 206 outputs of SD interface; Through SD/JTAG card extender 202 as shown in Figure 3, realization is connected with JTAG debugging acid 203.
A concrete application implementation example can be shown in Fig. 2-a, and when JTAG debugging acid 203 was connected to system host 201 through SD/JTAG card extender 202, JTAG debugging acid 203 sent specific sequence and gives main control chip 204.After main control chip 204 detects this particular sequence, automatically operate in the JTAG debugging mode, the SD/JTAG multiplex interface 206 of this moment is used as jtag interface and is used.JTAG debugging acid 203 is through this interface 206, realize to system host 201 debug, program burn writing or program upgrade.
When system host 201 directly connects SD equipment 207, shown in Fig. 2-b.Fig. 2-b is the modular structure synoptic diagram that easy the to be debugging embedded system of the multiplexing SD interface of one embodiment of the invention connects SD equipment.At this moment, main control chip 204 detects less than the particular sequence that gets into the JTAG pattern, so system host 201 can not get into the JTAG debugging mode, this moment, multiplexing SD interface 206 promptly was used as the use of SD interface, and SD equipment 207 is carried out conventional read-write operation.
In sum, easy the to be debugging embedded system of multiplexing SD interface of the present invention is with respect to the main improvement of the embedded system that has the SD interface of prior art:
1) inner at main control chip, some signal multiplexing of design debug interface signal and SD interface goes out pin;
2) on the PCB cabling, the debugging interface signal is drawn by the SD interface;
3) card extender that adopts the modulation of SD interface to try mouthful is realized being connected with the smooth of debugging acid.
Obviously, the debugging interface that embedded system existed before easy the to be debugging embedded system of the multiplexing SD interface after the improvement can perfectly solve is drawn inconvenient problem.
The present invention adopts the multiplexing method for designing of the signal wire of SD interface and debugging interface; The embedded system main computer boxes that has solved related application is when needs carry out problem debugging or program upgrade through debugging interface; Debugging interface is drawn inconvenience; Need take the poor efficiency of shell and the problem of destructible apart, be very easy to product and reprocess debugging and program upgrade process, and user's experience and complete machine cost had no influence fully.
In addition, to adopting other to adopt the embedded system of the debugging interface of non-JTAG mode, also can application class like mode and SD interface duplex, the realization above-mentioned functions.
Though the present invention with preferred embodiment openly as above, it is not to be used for limiting the present invention, and any those skilled in the art are not breaking away from the spirit and scope of the present invention, can make possible change and modification.Therefore, every content that does not break away from technical scheme of the present invention, according to technical spirit of the present invention to any modification, equivalent variations and modification that above embodiment did, within the protection domain that all falls into claim of the present invention and defined.

Claims (6)

1. easy the to be debugging embedded system (200) of a multiplexing SD interface comprises:
System host (201) comprising:
Main control chip (204) includes SD/ debugging internal circuit (205) in it;
SD interface (206), an end is connected with said SD/ debugging internal circuit (205);
SD/ debugs card extender (202), is connected with a debugging acid (203) with the other end of said SD interface (206) respectively, is used for converting said SD interface (206) into debugging interface.
2. the debugging embedded system (200) that is prone to according to claim 1; It is characterized in that; Said debugging interface is a jtag interface, and then said SD/ debugging card extender (202), said debugging acid (203) and said SD/ debugging internal circuit (205) are respectively SD/JTAG card extender, JTAG debugging acid and SD/JTAG internal circuit.
3. the debugging embedded system (200) that is prone to according to claim 1 and 2; It is characterized in that; Said SD interface (206) is connected with said SD/ debugging internal circuit (205) with 6 line connected modes of standard, and said 6 lines comprise the data line of clock line, order wire and 4 bit wides.
4. the debugging embedded system (200) that is prone to according to claim 3 is characterized in that said jtag interface is 4 line connected modes of standard, and said 4 lines comprise model selection line, clock line, Data In-Line and DOL Data Output Line.
5. the debugging embedded system (200) that is prone to according to claim 1 is characterized in that said system host (201) is insertion-card MP 3 player or card reader.
6. according to claim 1 or the 5 described debugging embedded systems (200) that are prone to, it is characterized in that said main control chip (204) is MCU, DSP or FPGA device.
CN201210232203.4A 2012-07-05 2012-07-05 Easily-debugged embedded system of complex SD (secure digital) interface Expired - Fee Related CN102750243B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210232203.4A CN102750243B (en) 2012-07-05 2012-07-05 Easily-debugged embedded system of complex SD (secure digital) interface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210232203.4A CN102750243B (en) 2012-07-05 2012-07-05 Easily-debugged embedded system of complex SD (secure digital) interface

Publications (2)

Publication Number Publication Date
CN102750243A true CN102750243A (en) 2012-10-24
CN102750243B CN102750243B (en) 2015-05-27

Family

ID=47030445

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210232203.4A Expired - Fee Related CN102750243B (en) 2012-07-05 2012-07-05 Easily-debugged embedded system of complex SD (secure digital) interface

Country Status (1)

Country Link
CN (1) CN102750243B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103746877A (en) * 2013-12-31 2014-04-23 迈普通信技术股份有限公司 Communication equipment interface device and converter
CN105095041A (en) * 2015-09-08 2015-11-25 福州瑞芯微电子股份有限公司 Chip debugging method
CN105224431A (en) * 2015-09-08 2016-01-06 福州瑞芯微电子股份有限公司 The adjustment method of the multiplexing SD interface of a kind of embedded chip
CN105528270A (en) * 2015-12-30 2016-04-27 东风商用车有限公司 JTAG (Joint test action group) and BDM (brain-based data model) integrated debugging interface and using method thereof
WO2016078288A1 (en) * 2014-11-19 2016-05-26 中兴通讯股份有限公司 Method, communication interface and debugging system for multiplexing port resource
CN105701011A (en) * 2015-12-31 2016-06-22 上海盈方微电子有限公司 Debugging method, electronic product applying debugging method and debugging card
WO2017128181A1 (en) * 2016-01-28 2017-08-03 华为技术有限公司 Single board, electronic apparatus and method for channel selection
CN108196989A (en) * 2017-12-13 2018-06-22 苏州长风航空电子有限公司 A kind of universal debugging interface based on i.MX6 series processors platforms
CN113868070A (en) * 2021-09-23 2021-12-31 山东云海国创云计算装备产业创新中心有限公司 Debugging method, system, storage medium and equipment for SD card controller

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1326172A2 (en) * 2001-12-28 2003-07-09 Texas Instruments Incorporated Communication Method and Apparatus for Assigning Device Identifier
CN101021824A (en) * 2006-09-01 2007-08-22 炬力集成电路设计有限公司 HDD and SDRAM data transmitting controller and data transmitting method
CN101078746A (en) * 2007-07-11 2007-11-28 凤凰微电子(中国)有限公司 Border scanning test structure of multiple chip package internal connection and test method
CN101566980A (en) * 2008-04-23 2009-10-28 凤凰微电子(中国)有限公司 Method for multiplexing interface of SD card and SD card with expanded function
CN202217264U (en) * 2011-07-29 2012-05-09 青岛海信移动通信技术股份有限公司 Entire machine debugging system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1326172A2 (en) * 2001-12-28 2003-07-09 Texas Instruments Incorporated Communication Method and Apparatus for Assigning Device Identifier
CN101021824A (en) * 2006-09-01 2007-08-22 炬力集成电路设计有限公司 HDD and SDRAM data transmitting controller and data transmitting method
CN101078746A (en) * 2007-07-11 2007-11-28 凤凰微电子(中国)有限公司 Border scanning test structure of multiple chip package internal connection and test method
CN101566980A (en) * 2008-04-23 2009-10-28 凤凰微电子(中国)有限公司 Method for multiplexing interface of SD card and SD card with expanded function
CN202217264U (en) * 2011-07-29 2012-05-09 青岛海信移动通信技术股份有限公司 Entire machine debugging system

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103746877A (en) * 2013-12-31 2014-04-23 迈普通信技术股份有限公司 Communication equipment interface device and converter
CN105681067B (en) * 2014-11-19 2020-10-16 中兴通讯股份有限公司 Port resource multiplexing method, communication interface and debugging system
WO2016078288A1 (en) * 2014-11-19 2016-05-26 中兴通讯股份有限公司 Method, communication interface and debugging system for multiplexing port resource
CN105681067A (en) * 2014-11-19 2016-06-15 中兴通讯股份有限公司 Port resource reuse method, communication interface and debugging system
CN105095041A (en) * 2015-09-08 2015-11-25 福州瑞芯微电子股份有限公司 Chip debugging method
CN105224431A (en) * 2015-09-08 2016-01-06 福州瑞芯微电子股份有限公司 The adjustment method of the multiplexing SD interface of a kind of embedded chip
CN105095041B (en) * 2015-09-08 2018-07-03 福州瑞芯微电子股份有限公司 The adjustment method of chip
CN105528270B (en) * 2015-12-30 2018-03-30 东风商用车有限公司 JTAG (Joint test action group) and BDM (brain-based data model) integrated debugging interface and using method thereof
CN105528270A (en) * 2015-12-30 2016-04-27 东风商用车有限公司 JTAG (Joint test action group) and BDM (brain-based data model) integrated debugging interface and using method thereof
CN105701011A (en) * 2015-12-31 2016-06-22 上海盈方微电子有限公司 Debugging method, electronic product applying debugging method and debugging card
WO2017128181A1 (en) * 2016-01-28 2017-08-03 华为技术有限公司 Single board, electronic apparatus and method for channel selection
CN108431788A (en) * 2016-01-28 2018-08-21 华为技术有限公司 A kind of method of veneer, electronic equipment and gating
CN108431788B (en) * 2016-01-28 2020-09-25 华为技术有限公司 Single board, electronic equipment and gating method
CN108196989A (en) * 2017-12-13 2018-06-22 苏州长风航空电子有限公司 A kind of universal debugging interface based on i.MX6 series processors platforms
CN113868070A (en) * 2021-09-23 2021-12-31 山东云海国创云计算装备产业创新中心有限公司 Debugging method, system, storage medium and equipment for SD card controller
CN113868070B (en) * 2021-09-23 2023-08-25 山东云海国创云计算装备产业创新中心有限公司 SD card controller debugging method, system, storage medium and device

Also Published As

Publication number Publication date
CN102750243B (en) 2015-05-27

Similar Documents

Publication Publication Date Title
CN102750243B (en) Easily-debugged embedded system of complex SD (secure digital) interface
CN103136138B (en) Chip, chip debugging method and communication method for chip and external devices
US8689063B2 (en) JTAG apparatus and method for implementing JTAG data transmission
CN102289419A (en) Multiplex SOC(system on a chip) integrated circuit for functional interface and debugging interface
CN102759676B (en) Capacitive screen comprehensive testing circuit, testing method and output data switching algorithm of testing method
JPH07507412A (en) Reconfigurable interface between computer and peripherals
CN104090855B (en) The USB mode of USB interface and the compatibility method and device of MHL patterns
CN202217264U (en) Entire machine debugging system
CN106776183B (en) Debugging circuit, debugging device, modulation system and electronic equipment
CN104133705B (en) A kind of serial ports loads the system and method for PowerPC System guides files
US7757029B2 (en) On the fly configuration of electronic device with attachable sub-modules
CN201741410U (en) On-line burning system provided with plurality of EEPROMs
CN103761129A (en) Method of implementing SDIO (secure digital input/output) interface drive in Boot loader layer
CN208207790U (en) A kind of intelligent universal single-chip microcontroller cd-rom recorder
CN201015041Y (en) BIOS chip extended device
CN200990079Y (en) BIOS chip expander
CN101968762B (en) NFC-SIM (Near Field Communication-Subscriber Identity Module) card chip simulator
CN102486939B (en) Method and apparatus for testing joint test action group (JTAG) of memories
CN107526351A (en) A kind of universal fault filling method and its device based on JTAG
CN107147864A (en) A kind of LVDS and USB interface adaptive approach
CN203849370U (en) Boundary scan testing apparatus
CN206532282U (en) A kind of debug circuit, debugging apparatus, debugging system and a kind of electronic equipment
CN103389438B (en) A kind of for the welding detection system with cpu pcb and method
CN105260755A (en) Integrated double-frequency card reader device
CN101329648B (en) Contact smart card emulator capable of debugging ATR

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150527