CN204903978U - Communication signals self -adaptation device between test system and sorting machine - Google Patents
Communication signals self -adaptation device between test system and sorting machine Download PDFInfo
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- CN204903978U CN204903978U CN201520586225.XU CN201520586225U CN204903978U CN 204903978 U CN204903978 U CN 204903978U CN 201520586225 U CN201520586225 U CN 201520586225U CN 204903978 U CN204903978 U CN 204903978U
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Abstract
The utility model discloses a communication signals self -adaptation device between test system and sorting machine, including semiconductor device electrical performance test system and sorting machine, the connection of communicating with each other of system and sorting machine passing signal line, be provided with a sorting machine communication interface signal battery detection circuitry and a switch circuit between system and sorting machine signal line, as the undetected sorting machine communication interface signal battery that arrives of detection circuitry, switch circuit switches on, and the system provides the power to sorting machine communication interface, and it has signal battery to detect sorting machine communication interface as detection circuitry, and switch circuit closes. The utility model discloses signal battery line selection nature connection in the connection, effective logic level of communication signals SOT tests when starting equal self -adaptation in succession at test system and sorting machine and has accomplished the setting, has reduced loaded down with trivial details software interface and has set up, has improved the ease for use of system. Each signal has all adopted optic -coupling parts to carry out detection and control, has improved communication signals's between test system and sorting machine interference killing feature.
Description
Technical field
The utility model belongs to information and transmits field, relates to communication signal self-reacting device between a kind of test macro and sorter, be a kind of be applied to semiconductor device electrical property can test in the Quick Connect Kit of sorter and test macro.
Background technology
It is the link that semiconductor packages testing factory ensures in the semiconductor device electrical property energy quality of producing that semiconductor device electrical property can be tested.In order to the industrialization test realizing semiconductor devices is produced, except using the test macro that can test for semiconductor device electrical property, also use sorter to carry out chip and be connected with the quick of test macro, and controlled by the bus communication between test macro and sorter, ensure the carrying out in order of semiconducter device testing, and after test terminates, carry out semiconductor devices divide gear.The communication control interface of sorter generally has TTL, LAN, RS232, IEE488 and GPIB these 5 kinds, and conventional communication control interface mode is TTL interface, only needs power supply VCC, SOT, EOT and Duo Gen BIN signal.
Because on market, sorter kind is numerous, each producer sorter of adopting TTL mode to carry out communication is incomplete same in interface definition, includes power supply mode, the effective logic level definition of SOT, EOT and BIN.In order to realize the normal communication of test macro and sorter, in power supply mode, whether self-powered according to sorter power supply signal when communication, need during communication cable line to select whether test macro communication interface power supply signal to be connected with the communication interface power supply signal of sorter, the design of communication cable does not have versatility.Arrange in effective logic level of communication signal SOT, sorter and test macro all need to carry out height effectively logic level setting respectively by respective software interface, ensure that effective logic level definition of communication signal is consistent.Due to different sorters, whether the power supply signal of communication interface is self-powered and incomplete same, test macro is not identical with the initial setting up of effective logic level of the SOT of sorter yet, the SOT signal of some test macro special or sorter only has some fixed logic level effective, user needs to be undertaken unifying to arrange by the software interface of respective system, test macro and sorting function just can be made to carry out normal communication, more loaded down with trivial details.
Summary of the invention
The purpose of this utility model proposes communication signal self-reacting device between a kind of test macro and sorter, by the power supply signal testing circuit that arranges between test macro and sorter at one and an on-off circuit, automatically the setting of sorter signal power source is controlled.
To achieve these goals, the technical solution of the utility model is: communication signal self-reacting device between a kind of test macro and sorter, comprises semiconductor device electrical property energy test macro and sorter, and described system and sorter are interconnected by signal wire, wherein, a sorter communication interface power supply signal testing circuit and an on-off circuit is provided with between system and sorter signal wire, described on-off circuit is provided with a control end and two output terminals, control end connected system interface, control conducting and the open circuit of control two output terminals, one of them output terminal connects the power supply signal port of sorter communication interface, the signal power supply line of another output terminal connected system, when testing circuit does not detect sorter communication interface power supply signal, on-off circuit conducting, system provides power supply to sorter communication interface, when testing circuit detects that sorter communication interface has power supply signal, on-off circuit cuts out.
Scheme is further: described sorter communication interface power supply signal testing circuit is a power detecting optocoupler circuit, optical drive two input ends of power detecting optocoupler circuit connect sorter communication interface power supply signal port and sorter signal power source ground respectively, the sorter power detecting port of optically-coupled two output terminals difference connected systems of power detecting optocoupler circuit and system simulation power supply ground.
Scheme is further: described on-off circuit is made up of a switch optocoupler circuit and a switch mosfet pipe, the optical drive input end of switch optocoupler circuit connects described system control interface, the optically-coupled of switch optocoupler circuit exports the control end connecting switch mosfet pipe, the signal power supply line of the drain electrode connected system of switch mosfet pipe, the source electrode of switch mosfet pipe connects the power supply signal port of sorter communication interface.
Scheme is further: be also provided with a sorter SOT signal logic level detecting unit between described system and sorter signal wire, described level detection unit includes a level detection optocoupler circuit, optical drive two input ends of described level detection optocoupler circuit connect power supply signal port and the sorter SOT signal wire of sorter communication interface respectively, the SOT signal wire Validity Test end of optically-coupled two output terminals difference connected systems of level detection optocoupler circuit and system simulation power supply ground.
Scheme is further: between described system and sorter signal wire, be also provided with EOT communication signal and BIN communication signal Phototube Coupling driver element.
The beneficial effects of the utility model are, the power signal line in connection is fixedly connected with, and connection is more general; Effective logic level of the communication signal SOT in connection is arranged, and when test macro and sorter follow-on test start, equal self-adaptation completes setting, decreases loaded down with trivial details software interface and arranges, improve the ease for use of system.Each signal all have employed optocoupler and carries out detection and control, improves the antijamming capability that between test macro and sorter, communication signal self-adaptation is arranged.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is the utility model structural schematic block diagram;
Fig. 2 is the embodiment schematic diagram of sorter communication interface power supply signal testing circuit of the present utility model and on-off circuit;
Fig. 3 is the schematic diagram of connection SOT signal logic level detecting unit embodiment of the present utility model;
Fig. 4 is the schematic diagram of EOT and BIN communication signal drive unit embodiment of the present utility model.
Embodiment
Communication signal self-reacting device between a kind of test macro and sorter, as shown in Figure 1, described device comprises semiconductor device electrical property energy test macro 1 and sorter 2, system includes system electric parameters testing circuit, system computer and system communication signaling interface, and sorter comprises mechanism for sorting and control circuit, sorting computing machine, TTL communication interface, described system and sorter to be communicated with each other connection by the signal wire 3 between two communication interfaces, and signal wire comprises the signal power supply line (Power_Tester) 301 of system side, the power supply signal port lines (Power_Handler) 302 of sorting pusher side, SOT signal wire 303, EOT signal wire 304 and Duo Gen BIN signal wire 305, wherein, communication signal self-reacting device 4 is provided with between system and sorter signal wire, a sorter communication interface power supply signal testing circuit and an on-off circuit is provided with in described adaptive device, described on-off circuit is provided with a control end and two output terminals, control end connected system control interface, control conducting and the open circuit of two output terminals, one of them output terminal connects the power supply signal port of sorter communication interface, the signal power supply line of another output terminal connected system, when testing circuit does not detect sorter communication interface power supply signal, on-off circuit conducting, system provides power supply to sorter communication interface, when testing circuit detects that sorter communication interface has power supply signal, on-off circuit cuts out.
In embodiment: as shown in Figure 2, described sorter communication interface power supply signal testing circuit is a power detecting optocoupler circuit 5, optical drive two input ends of power detecting optocoupler circuit connect respectively sorter communication interface power supply signal port 302 and sorter signal power source negative pole (), optically-coupled two output terminals of power detecting optocoupler circuit respectively the sorter power detecting port (Power_Check) 306 of connected systems and system simulation power cathode (), certain photocoupling test port exports the power supply also being connected+a 3.3V by a pull-up resistor R1, also a resistance R2 is had between sorter communication interface power supply signal port 302 and photoelectrical coupler.When Power_Handler signal is high level, optocoupler drive end drives a current through, and optocoupler output terminal is connected, and Power_Check end is low level; When Power_Handler signal is low level, optocoupler drive end does not have drive current, and optocoupler output terminal disconnects, and Power_Check end is high level.When test macro follow-on test starts, the power supply signal Power_Handler state of now sorter is detected by power detecting photoelectric coupling circuit 5, and the level state of this power supply signal is fed back to test macro, whether test macro communication power supply interface Power_Tester is connected to sorter communication power supply interface Power_Handler for on-off circuit.
In embodiment: as shown in Figure 2, described on-off circuit 6 is made up of a switch optocoupler circuit 601 and a switch mosfet pipe 602, the optical drive input end of switch optocoupler circuit connects described system control interface (Power_Control) 307, the optically-coupled of switch optocoupler circuit exports the control end (between grid and source electrode) connecting switch mosfet pipe, the signal power supply line 301 of the drain electrode connected system side of switch mosfet pipe, the source electrode of switch mosfet pipe connects the power supply signal port 302 of sorter communication interface, the optical drive input other end of certain switch optocoupler circuit connects the power supply an of+3.3V by resistance R3, when the power control signal Power_control of test macro is high level, switch photoelectrical coupler drive end is without drive current, without driving voltage between the grid of output terminal MOSFET and source electrode, MOSFET is in off-state, and namely Power_Tester and Power_Handler is in off-state.When the power control signal Power_control of test macro is low level, switch photoelectrical coupler drive end drives a current through, isolation drive voltage is had between the grid of output terminal MOSFET and source electrode, MOSFET is in conducting state, and namely Power_Tester and Power_Handler is in conducting state.When test macro follow-on test starts, test macro obtains the logic level state of the power supply signal Power_Handler signal of sorter in connection by power supply signal testing circuit, when Power_Check is high, i.e. sorter connection power supply signal interface non-transformer, test macro computing machine is low by arranging the power control signal Power_Control of on-off circuit, by the conducting of switch photoelectrical coupler driven MOS FET device, power supply signal Power_Tester in test macro connection is received the Power_Handler of sorter, realize test macro to power to the communication interface of sorter.When Power_Check is low, namely sorter connection power supply signal interface is self-powered, Power_Handler in power supply signal Power_Tester in test macro connection and sorter connection, by arranging the power control signal Power_control of power supply signal testing circuit for high, disconnects by test macro computing machine.When test macro follow-on test starts, carry out above-mentioned detection and adaptive judgement, realize the communication interface adaptation power supply of test macro to sorter.
In embodiment: as shown in Figure 3, a sorter SOT signal logic level detecting unit is also provided with between described system and sorter signal wire, described level detection unit includes a level detection optocoupler circuit 7, optical drive two input ends of described level detection optocoupler circuit connect power supply signal port 302 and the sorter SOT signal wire 303 of sorter communication interface respectively, optically-coupled two output terminals of level detection optocoupler circuit respectively SOT signal wire Validity Test end (SOT_Check) 308 of connected systems and system simulation power cathode (), the SOT signal wire Validity Test end of certain level detection photoelectrical coupler also will connect the power supply an of+3.3V by a resistance R5, the input end of level detection photoelectrical coupler is connected with the power supply signal port 302 of sorter communication interface by a current-limiting resistance R4.When detected signal SOT is high level, level detection photoelectrical coupler drive end is without drive current, and level detection photoelectric coupler output end disconnects, and SOT_Check signal is also high level; When SOT signal is low level, level detection photoelectrical coupler drive end drives a current through, the short circuit of level detection photoelectric coupler output end, and SOT_Check end is also low level.The current logic level state of connection SOT signal is detected by SOT signal logic level detecting unit, to be now detected the effective logic level state of logic level inverse state as detected signal SOT of signal, the self-adaptation realizing the detected effective logic level of signal is arranged.
In embodiment: what be also provided with EOT communication signal and the signal of BIN communication signal Phototube Coupling driver element 8, Fig. 4 between described system and sorter signal wire is a kind of universal circuit of communication signal Phototube Coupling driver element.This driver element have employed optocoupler and realizes, and optocoupler drive end pull-up resistor R6 is connected to+3.3V, and it is that signal enters (Signal_Drive) and carries out communication signal isolated controlling that another pin of drive end connects; Optocoupler output terminal is connected to communication power supply signal Power_Handler by pull-up resistor R7, another pin of output terminal connect sorter communication interface connection power cathode () signal (SGND), go out signal (Signal_Out) by signal and carry out communication signal isolation and amplifier.When Communication Control signal Signal_Drive is high level, optocoupler drive end is without drive current, and optocoupler output terminal disconnects, and Signal_Out end is also high level; When Signal_Drive signal is low level, optocoupler drive end drives a current through, the short circuit of optocoupler output terminal, and Signal_Out end is also low level.
Claims (5)
1. a communication signal self-reacting device between test macro and sorter, comprises semiconductor device electrical property energy test macro and sorter, and described system and sorter are interconnected by signal wire, it is characterized in that, a sorter communication interface power supply signal testing circuit and an on-off circuit is provided with between system and sorter signal wire, described on-off circuit is provided with a control end and two output terminals, control end connected system control interface, control conducting and the open circuit of two output terminals, one of them output terminal connects the power supply signal port of sorter communication interface, the signal power supply line of another output terminal connected system, when testing circuit does not detect sorter communication interface power supply signal, on-off circuit conducting, system provides power supply to sorter communication interface, when testing circuit detects that sorter communication interface has power supply signal, on-off circuit cuts out.
2. self-reacting device according to claim 1, it is characterized in that, described sorter communication interface power supply signal testing circuit is a power detecting optocoupler circuit, optical drive two input ends of power detecting optocoupler circuit connect sorter communication interface power supply signal port and sorter signal power source ground respectively, the sorter power detecting port of optically-coupled two output terminals difference connected systems of power detecting optocoupler circuit and system simulation power supply ground.
3. self-reacting device according to claim 1 and 2, it is characterized in that, described on-off circuit is made up of a switch optocoupler circuit and a switch mosfet pipe, the optical drive input end of switch optocoupler circuit is that described control end connects described system control interface, the optically-coupled of switch optocoupler circuit exports the control end connecting switch mosfet pipe, the signal power supply line of the drain electrode connected system of switch mosfet pipe, the source electrode of switch mosfet pipe connects the power supply signal port of sorter communication interface.
4. self-reacting device according to claim 1, it is characterized in that, a sorter SOT signal logic level detecting unit is also provided with between described system and sorter signal wire, described level detection unit includes a level detection optocoupler circuit, optical drive two input ends of described level detection optocoupler circuit connect power supply signal port and the sorter SOT signal wire of sorter communication interface respectively, the SOT signal wire Validity Test end of optically-coupled two output terminals difference connected systems of level detection optocoupler circuit and system simulation power supply ground.
5. self-reacting device according to claim 1, is characterized in that, is also provided with EOT communication signal and BIN communication signal Phototube Coupling driver element between described system and sorter signal wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520586225.XU CN204903978U (en) | 2015-08-06 | 2015-08-06 | Communication signals self -adaptation device between test system and sorting machine |
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| CN201520586225.XU CN204903978U (en) | 2015-08-06 | 2015-08-06 | Communication signals self -adaptation device between test system and sorting machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843717A (en) * | 2016-04-05 | 2016-08-10 | 河北上元工控技术有限公司 | Interface detection protection circuit for lane controller |
| CN114070765A (en) * | 2021-11-02 | 2022-02-18 | 广东利扬芯片测试股份有限公司 | Communication interface test circuit and method |
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2015
- 2015-08-06 CN CN201520586225.XU patent/CN204903978U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843717A (en) * | 2016-04-05 | 2016-08-10 | 河北上元工控技术有限公司 | Interface detection protection circuit for lane controller |
| CN105843717B (en) * | 2016-04-05 | 2023-02-28 | 河北上元智能科技股份有限公司 | Interface detection protection circuit of lane controller |
| CN114070765A (en) * | 2021-11-02 | 2022-02-18 | 广东利扬芯片测试股份有限公司 | Communication interface test circuit and method |
| CN114070765B (en) * | 2021-11-02 | 2023-05-23 | 广东利扬芯片测试股份有限公司 | Communication interface test circuit and method |
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Address after: 100070 Beijing city Fengtai District Haiying Road No. 1 Building 2 layer 7 Patentee after: Beijing Hua Feng measurement and control technology Limited by Share Ltd Address before: 100070 Beijing city Fengtai District Haiying Road No. 1 Building 2 layer 7 Patentee before: BEIJING HUAFENG TEST & CONTROL TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |