CN109739783A - Read and/or write simultaneously the device of more optical module EEPROM - Google Patents
Read and/or write simultaneously the device of more optical module EEPROM Download PDFInfo
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- CN109739783A CN109739783A CN201910037406.XA CN201910037406A CN109739783A CN 109739783 A CN109739783 A CN 109739783A CN 201910037406 A CN201910037406 A CN 201910037406A CN 109739783 A CN109739783 A CN 109739783A
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Abstract
The invention discloses a kind of devices for reading and/or writing simultaneously more optical module EEPROM, it is desirable to provide a kind of device being fast and easily read out to the EEPROM of optical module with write-in.The technical scheme is that: usb interface connector U1 connection microcontroller chip U2, microcontroller chip U2 connects two-way 8:1 mux chip U3 by I2C bus, and single channel 8:1 mux chip U4 is connected by signal wire in place, and above-mentioned two-way 8:1 mux chip U3 and single channel 8:1 mux chip U4 are connected respectively on 8 SFP electric interfaces sockets.Optical module accesses circuit board by SFP electric interfaces socket, and optical module EEPROM built in PC machine reads and writes software and loads EEPROM write-in and reading that SN product ID in multiple BIN binary codes and BIN binary code increases more than 1 optical module automatically automatically.
Description
Technical field
The present invention relates to optical communication fields, can be simultaneously to more optical module band Electrically Erasable Programmable Read-Only Memory
The device that EEPROM is written and read.
Background technique
In optical module technical field, the optical module being made of opto-electronic device, functional circuit and optical interface etc., inside is all
It is integrated with band Electrically Erasable Programmable Read-Only Memory EEPROM and IC interface can be provided out, come it according to I2C interface timing
Access optical module EEPROM.Very simple when reading EEPROM, EEPROM is according to the timing sent, directly just data
It sends out, but writes EEPROM but without so simple.After sending data to EEPROM, it is first stored in the slow of EEPROM
It deposits, EEPROM has to the data-moving in caching to non-volatile region to can be only achieved the effect that power down is not lost.And it is past
Nonvolatile region, which is write, needs the regular hour, every kind of device not exclusively, this write time of the 24C02 of atmel corp
Not more than 5ms.In the process write toward nonvolatile region, EEPROM will not respond access again, not receive number not only
According to going to address using the addressing mode of I2C standard, EEPROM will not be replied, just as not having this device in this bus
Part is the same.Although user can access the EEPROM in SFP optical module by the I2C bus interface of its standard, corresponding light is obtained
Module information.But since the EEPROM device address inside SFP optical module is uniformly set as " 000 " in production by regulation,
When using multiple SFP optical modules on veneer, I2C universal serial bus cannot be used to be connected in series each optical module, it otherwise can be because of device
Part address is identical and each SFP optical module cannot be distinguished, and thus loses the function of I2C bus multinode software addressing.It can not
Multiple SFP optical modules are addressed to operate by an I2C bus.
EEPROM refers to, is the storage chip that data are not lost after a kind of power down, can be on computers or on special equipment
Existing information is wiped, reprograms, is commonly used in plug and play.EPROM is to remain to the computer for retaining data after a kind of power-off
Storage chip, it is one group of floating transistor, the electronic device provided by one than common voltage higher voltage in electronic circuit
It programs respectively.Once EPROM can only be wiped with strong ultraviolet radiation after the completion of programming, silicon wafer can be seen by encapsulating top
Transparent window, it is easy to identify EPROM, this window is used to carry out ultraviolet erasing simultaneously.The programming of EPROM need using
Programmable device is completed.Programmable device is the device for generating high-voltage pulse signal required for EPROM is programmed.By EPROM when programming
Data be sent in random access memory, then start program, just data are written in EPROM line by line for programmable device.Optical mode
Block application environment is complicated, when be commonly present EPROM data there is the phenomenon that mistake or EEP-ROM EEPROM error in data.?
In practical application, above scheme has the following problems cannot achieve the addressing of multiple SFP optical modules in I2C bus.It causes this
The main reason for situation, is that existing addressing method directly hangs over each optical module in I2C bus, when in different SFP optical modules
EEPROM device site homogeneous simultaneously, leads to address conflict and cannot achieve addressing function.
In optical module production, the test board of only one SFP electric interfaces socket is generallyd use and by producing automatically
Change software the EEPROM of optical module is written, finished product is used as after factory.When needs restructure corresponding finished product optical module
When, then it needs that the EEPROM in optical module is written again, and use the test board of only one SFP electric interfaces socket
Progress write operation speed is too slow, and operation mode is often to plug an optical module into the test board of SFP electric interfaces socket, so
The software in PC machine is manipulated afterwards and carries out write operation, is pulled up this optical module after the completion of write-in and is plugged another optical module again, and it is every
Information in optical module be it is different, pull up the operating software that very important person after optical module is and remove BIN binary system in load PC machine
Code file artificial removes SN product ID in modification BIN binary code file.Therefore optical module, load BIN are frequently plugged
Binary code file and modification SN product ID, operation is cumbersome, and flexibility is not high enough, influences efficiency, cannot embody production
The automation of line.
Summary of the invention
In place of in view of the deficiency of the prior art, a kind of more convenient and quicker is provided, flexibly
Property it is high, information writing speed is fast, and the EEPROM of up to 8 optical modules can be written simultaneously, can greatly improve work
The device of more optical module EEPROM is read and/or write while efficiency.
Above-mentioned purpose of the invention can be achieved by the following technical programs: a kind of while reading and/or writing more optical modes
The device of block EEPROM, comprising: the optical module EEPROM read/write circuit plate with usb interface connector U1, it is characterised in that:
Usb interface connector U1 connects microcontroller chip U2 by usb bus, and connects single channel 8:1 by signal wire in place and answer
Two-way 8:1 mux chip U3, and above-mentioned two-way 8:1 are connected by I2C bus with device chip U4, microcontroller chip U2
Mux chip U3 and single channel 8:1 mux chip U4 are connected respectively on 2-8 SFP electric interfaces socket, and optical module passes through
SFP electric interfaces socket accesses optical module EEPROM read/write circuit plate；Usb interface connector U1 passes through the optical module in PC machine
EEPROM read-write software loads multiple BIN binary codes automatically and SN product ID in specific BIN binary code is increased 1 automatically
Mode, to the band Electrically Erasable Programmable Read-Only Memory EEPROM of up to 8 optical modules switch over gating write-in and read-write.
The present invention has the advantages that compared with the prior art.
It is simple to build mode.It is of the invention to build mode only and need a PC machine, a USB data line, one piece of optical module
EEPROM read/write circuit plate can build completion, and low in energy consumption, can not have to external power supply.
It is convenient to operate, and writing speed is fast.Not more than 8 optical modules are inserted respectively into optical module EEPROM and read by the present invention
On the corresponding SFP electric interfaces socket of write circuit plate, the optical module EEPROM read-write software in PC machine need to only load 1 BIN bis-
Ary codes file, then selecting writing mode is to load multiple BIN binary codes automatically or by SN in specific BIN binary code
Product ID increases 1 automatically.Information code is directly written to corresponding optical module after the completion of selection, can once write 8 optical modes in batches
Block.Therefore very convenient quick, writing speed is fast.
Data are accurate and reliable, easy-to-look-up problem.It is often write optical module in the present invention after the EEPROM of an optical module
In EEPROM storage content read out and be compared with former BIN binary code file, exist immediately after there is write error
It is shown in optical module EEPROM read-write software in PC machine, guarantees the accuracy of data, and conveniently check it is which part
Data write-in error.
Information code intuitive display, visualization are high, flexibility is high.The present invention is assisted by PC machine software according to SFP-8472
View parses BIN binary code file, can conveniently get information about the content of BIN binary code file, and pass through PC machine
Editing area in software modifies to the content of BIN binary code file.Therefore visualization is high, flexibility is high.
Detailed description of the invention
Fig. 1 is the schematic diagram for the device that the present invention read and/or write simultaneously more optical module EEPROM.
Fig. 2 is the optical module EEPROM read-write software write-in work flow diagram in the PC machine of Fig. 1.
Fig. 3 is the optical module EEPROM read-write software read work flow chart in the PC machine of Fig. 1.
Fig. 4 is the work flow diagram of Fig. 1.
Specific embodiment
Refering to fig. 1.In preferred embodiment described below, it is a kind of and meanwhile read and/or write more optical module EEPROM's
Device, comprising: the optical module EEPROM read/write circuit plate with usb interface connector U1, it is characterised in that: USB interface connection
Device U1 connects microcontroller chip U2 by usb bus, and connects single channel 8:1 mux chip U4 by signal wire in place,
Microcontroller chip U2 connects two-way 8:1 mux chip U3, and above-mentioned two-way 8:1 mux chip U3 by I2C bus
It is connected respectively on 8 SFP electric interfaces sockets with single channel 8:1 mux chip U4, optical module passes through SFP electric interfaces socket
Access optical module EEPROM read/write circuit plate；Usb interface connector U1 reads and writes software certainly by the optical module EEPROM in PC machine
The dynamic mode for loading multiple BIN binary codes and SN product ID in specific BIN binary code being increased to 1 automatically, to up to 8
The band Electrically Erasable Programmable Read-Only Memory EEPROM of optical module switches over gating write-in and read-write.
Electric interfaces socket includes: 1-8 respectively SFP electric interfaces socket 1, the SFP electric interfaces sockets of U5-U12
2 ... SFP electric interfaces sockets 8, and the TX_Disable pin on every SFP electric interfaces socket is grounded respectively, works as optical mode
When block is plugged on corresponding SFP electric interfaces socket, optical module EEPROM read/write circuit plate triggers the TX of the optical module
Disable function reaches the power consumption for reducing whole device by turning off the light emitting of optical module.
Usb interface connector U1 is connected by USB data line with the USB interface of PC machine.Microcontroller chip U2 is realized
Usb bus turns the function of I2C bus, and the BIN binary code file that PC machine is sent is by I2C bus transfer into optical module
It stores, the information in the EEPROM in optical module can also be transmitted by the usb bus of microcontroller chip U2 in EEPROM
It is shown in optical module EEPROM read-write software on to PC machine.
Optical module EEPROM read-write software in PC machine can choose loads multiple BIN binary codes and will be specific automatically
SN product ID increases 1 mode automatically in BIN binary code, its content may be displayed on after the load of BIN binary code file
In optical module EEPROM read-write software in PC machine, and parsed by software according to the specification of SFP-8472 agreement.
Microcontroller chip U2 passes through switching single channel according to the instruction of the optical module EEPROM read-write software in PC machine
The guiding path of 8:1 mux chip U4 is carried out between 1 U5 to SFP electric interfaces socket of SFP electric interfaces socket, 8 U12
Switching, poll read the state of the signal wire in place on SFP electric interfaces socket to judge whether optical module has been plugged into accordingly
SFP electric interfaces socket on.And optical module information in place is shown in the read-write software of the optical module EEPROM in PC machine.
Two-way 8:1 mux chip U3 is multiplexed I2C bus, and single channel 8:1 mux chip U4 is to signal wire in place
Be multiplexed, microcontroller chip U2 switch I2C bus guiding path, by microcontroller chip U2 with it is corresponding
SFP electric interfaces socket is connected, and the optical module on SFP electric interfaces socket transmits BIN binary code file.
Single channel 8:1 mux chip U4 is according to optical module on the state-detection SFP electric interfaces socket of signal wire in place
Inserting state；When not having grafting optical module on SFP electric interfaces socket, it is automatic that optical module EEPROM built in PC machine reads and writes software
This SFP electric interfaces socket is skipped, then next SFP electric interfaces socket is detected, until 1-8 SFP electrically connects
Mouth socket detection finishes, and detecting state is shown in the read-write software of the optical module EEPROM in PC machine.
When optical module EEPROM read-write software loads multiple BIN binary codes automatically built in PC machine, load document is pressed from both sides first
This content, is then written to the optical module on 1 U5 of SFP electric interfaces socket by the BIN binary code file of middle sequence first
In EEPROM, the content of the EEPROM storage in the optical module is read after the completion of write-in, and literary with BIN binary code when write-in
Part compares, and the content compared is shown in the read-write software of the optical module EEPROM in PC machine.After often writing an optical module,
Corresponding BIN binary code file is deleted, next BIN binary code file is then searched automatically and loads, then by this
BIN binary code file is written in the EEPROM of the optical module on 2 U6 of SFP electric interfaces socket, and successively poll is until the 8th
Terminate write operation after the completion of the write-in of optical module.
Optical module EEPROM built in PC machine reads and writes software and loads specific BIN binary code file, then SN product ID
When the mode of automatic increasing 1, specific BIN binary code file is loaded first, is read and write by the optical module EEPROM in PC machine soft
Part carries out the accuracy of data in CHECK SUM data check and arithmetic check BIN binary code automatically.Then this content is write
Enter into the EEPROM of the optical module on 1 U5 of SFP electric interfaces socket, the EEPROM in the optical module is read after the completion of write-in
The content of storage, and compared with BIN binary code file when write-in, the content compared is shown in the optical module in PC machine
EEPROM reads and writes in software.Then on the basis of the specific BIN binary code file of original load, the SN product sequence that is indicated
Row number increases 1 automatically, is re-started automatically in CHECK SUM data check and arithmetic check BIN binary code again by software
The accuracy of data.Then the BIN binary code after SN product ID being increased 1 automatically again is written to SFP electric interfaces socket 2
In optical module on U6, successively poll terminates write operation after the completion of the 8th module write-in.
When optical module EEPROM reads and writes the EEPROM of software reading optical module, passes through microcontroller chip U2 and switch I2C
The EEPROM that optical module is corresponded on specified SFP electric interfaces socket is read in PC machine and is shown, by optical module by bus
Information CHECK SUM data check and operation whether carry out the information in judgment module accurate.
Micro-control unit MCU is one chip microcomputer or single-chip microcontroller.Micro controller unit MCU is central processing unit
The frequency of CPU and specification do appropriate reduction, and by memory memory, counter Timer, USB, modulus converter A/D, general different
Receiving-transmitting transmitter UART, programmable controller PLC, direct memory access dma controller perimeter interface or even LCD chip is walked to drive
Dynamic circuit all integrates the computer for forming chip-scale on a single chip, does various combination control for multiple applications.
When carrying out EEPROM write-in to corresponding optical module, optical module EEPROM read-write software in PC machine is by USB to micro-
Controller MCU chip U2 issues the instruction of switching two-way 8:1 mux chip guiding path, the microcontroller core in device
After piece U2 receives instruction, switch the guiding path of two-way 8:1 mux chip U3, it will corresponding SFP electric interfaces by I2C bus
Optical module on socket is connected with microcontroller chip U2；Then the BIN binary code file in PC machine is written to pair
It is stored in the EEPROM for the optical module answered, switches two-way 8:1 mux chip guiding path after write-in again, it will be next
Optical module on SFP electric interfaces socket is connected with microcontroller chip U2, then again to by BIN binary code file
It is written in corresponding optical module and is stored in EEPROM, until the optical module write-in on the 8th SFP electric interfaces socket finishes.
When carrying out EEPROM reading to corresponding optical module, what the optical module EEPROM read-write software selection in PC machine was specified
Then SFP electric interfaces socket issues switching two-way 8:1 mux chip guiding path to microcontroller chip U2 by USB
The instruction of diameter after the microcontroller chip U2 in device receives instruction, switches the guiding path of two-way 8:1 mux chip U3
Optical module on corresponding SFP electric interfaces socket is connected by diameter by I2C bus with microcontroller chip U2.Then it reads
It takes the content stored in the EEPROM of corresponding optical module and the optical module EEPROM read-write being transferred in PC machine by usb bus is soft
It is shown in part.
Micro-control unit (Microcontroller Unit；MCU), also known as one chip microcomputer (Single Chip
) or single-chip microcontroller Microcomputer.Micro controller unit MCU is central processing unit (Central Process Unit；
CPU frequency) and specification do appropriate reduction, and by memory memory, counter Timer, USB, modulus converter A/D, general
The perimeter interfaces such as asynchronous receiving-transmitting transmitter UART, programmable controller PLC, direct memory access dma controller or even LCD core
Piece driving circuit all integrates the computer for forming chip-scale on a single chip, does various combination control for multiple applications.
Micro-control unit MCU can using the High Performance SCM of C8051F32X series as master controller, to USB data transmission,
I2C bus marco is the core of entire scheme.
Refering to Fig. 2.Optical module EEPROM read-write software loads BIN binary code file first, to BIN binary code file
Checked, then single channel 8:1 multiplexer switched over, obtain the optical module on corresponding 8 SFP electric interfaces socket
The information such as bits number and plug-in position.It is again automatic add by reading and writing the setting selection of software to the optical module EEPROM in PC machine
The mode that SN product ID in specific BIN binary code is still increased 1 by multiple BIN binary codes automatically is carried, according to selecting party
The status information poll of formula and signal wire in place switches two-way 8:1 multiplexer, and I2C bus poll is switched to specified SFP electricity
BIN binary code file is written to the optical module on corresponding SFP electric interfaces socket by the optical module on gas interface socket
It is stored in EEPROM.
Refering to Fig. 3.Optical module EEPROM read-write software switches over single channel 8:1 multiplexer, obtains the SFP for needing to read
Optical module situation in place on electric interfaces socket, then switch two-way road 8:1 multiplexer, by I2C bus switch to specify
On optical module on SFP electric interfaces socket；EEPROM information in corresponding optical module is read in PC machine by I2C bus
It is shown in optical module EEPROM read-write software.
Refering to Fig. 4.Microcontroller chip U2 on optical module EEPROM read/write circuit plate is started by USB controller
It executes data and transmits enumeration operation, establish the usb communication with PC machine, what microcontroller chip U2 first judged whether selection is
The EEPROM mode for writing optical module is, continuous to switch single channel 8:1 mux chip U4, is sentenced by the state of signal wire in place
Disconnected grafting situation of the optical module on SFP electric interfaces socket, and optical module EEPROM of this information back into PC machine is read
Software is write, the optical module EEPROM read-write software in PC machine switches over two-way 8:1 mux chip U3 according to grafting situation,
And BIN binary code file is written in the EEPROM of corresponding optical module and is stored, switch two-way 8:1 after write-in again
Optical module on next SFP electric interfaces socket is connected by mux chip guiding path with microcontroller chip U2
It connects, then stores again to BIN binary code file to be written in corresponding optical module in EEPROM, until the 8th SFP is electrical
Optical module write-in on interface socket finishes.
If read the EEPROM of optical module, microcontroller chip U2 switches single channel 8:1 mux chip U4 to finger
Determine to judge grafting of the optical module on SFP electric interfaces socket on SFP electric interfaces socket by the state of signal wire in place
Situation.Then the guiding path for switching two-way 8:1 mux chip U3 will be corresponded on SFP electric interfaces socket by I2C bus
Optical module be connected with microcontroller chip U2.Then it reads the content stored in the EEPROM of corresponding optical module and leads to
It crosses in the optical module EEPROM read-write software that usb bus is transferred in PC machine and shows.
Above-described is only the preferred embodiment of the present invention.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the principle of the present invention, several modifications and improvements can also be made, these alterations and modifications should be regarded as belonging to
In protection scope of the present invention.
Claims (10)
1. a kind of device for reading and/or writing simultaneously more optical module EEPROM, comprising: the optical module with usb interface connector U1
EEPROM read/write circuit plate, it is characterised in that: usb interface connector U1 connects microcontroller chip U2 by usb bus,
And single channel 8:1 mux chip U4 is connected by signal wire in place, microcontroller chip U2 connects two-way by I2C bus
8:1 mux chip U3, and above-mentioned two-way 8:1 mux chip U3 and single channel 8:1 mux chip U4 are connected respectively to 2-8
On SFP electric interfaces socket, optical module accesses optical module EEPROM read/write circuit plate by SFP electric interfaces socket；USB interface
Connector U1 reads and writes software by optical module EEPROM in PC machine and loads multiple BIN binary codes automatically and by specific BIN bis-
SN product ID increases 1 mode automatically in ary codes, to the band Electrically Erasable Programmable Read-Only Memory of up to 8 optical modules
EEPROM switches over gating write-in and read-write.
2. the device as described in claim 1 for reading and/or writing simultaneously more optical module EEPROM, it is characterised in that: microcontroller
The BIN binary code file that PC machine is sent is transferred in the EEPROM in optical module and stores by MCU chip U2, or will be in optical module
EEPROM in information optical module EEPROM be transferred to built in PC machine by microcontroller chip U2 read and write in software and show
Show.
3. the device as described in claim 1 for reading and/or writing simultaneously more optical module EEPROM, it is characterised in that: optical module
Interface is SFP electric interfaces, can be with the optical module of the most 8 SFP packing forms of grafting.
4. the device as described in claim 1 for reading and/or writing simultaneously more optical module EEPROM, it is characterised in that: two-way 8:1 is multiple
I2C bus is multiplexed with device chip U3, single channel 8:1 mux chip U4 is multiplexed signal wire in place, microcontroller
MCU chip U2 switches the guiding path of I2C bus, and microcontroller chip U2 is connected with corresponding SFP electric interfaces socket
It connects, the optical module on SFP electric interfaces socket transmits BIN binary code file.
5. the device as described in claim 1 for reading and/or writing simultaneously more optical module EEPROM, it is characterised in that: single channel 8:1 is multiple
With device chip U4 according to the inserting state of optical module on the state-detection SFP electric interfaces socket of signal wire in place；When SFP is electrical
When not having grafting optical module on interface socket, optical module EEPROM built in PC machine reads and writes software and skips this SFP electric interfaces automatically
Then socket detects next SFP electric interfaces socket, until 1-8 SFP electric interfaces socket detection finishes, inspection
Status display is surveyed in the optical module EEPROM read-write software in PC machine.
6. the device as described in claim 1 for reading and/or writing simultaneously more optical module EEPROM, it is characterised in that: to optical module
EEPROM write-in when, optical module EEPROM read-write software when loading multiple BIN binary codes automatically, first in load document folder
This content, is then written to the optical module on 1 U5 of SFP electric interfaces socket by the BIN binary code file of sequence first
In EEPROM, the content of the EEPROM storage in the optical module is read after the completion of write-in, and literary with BIN binary code when write-in
Part compares, and the content compared is shown in the read-write software of the optical module EEPROM in PC machine；After often writing an optical module,
Corresponding BIN binary code file is deleted, next BIN binary code file is then searched automatically and loads, then by this
BIN binary code file is written in the EEPROM of the optical module on 2 U6 of SFP electric interfaces socket, and successively poll is until the 8th
Terminate write operation after the completion of the write-in of optical module.
7. the device as described in claim 1 for reading and/or writing simultaneously more optical module EEPROM, it is characterised in that: to optical module
EEPROM write-in when, optical module EEPROM read-write software load specific BIN binary code file first, will carry out automatically
The accuracy of data is written to 1 U5 of SFP electric interfaces socket in CHECK SUM data check and arithmetic check BIN binary code
On optical module EEPROM in, write-in after the completion of read in the optical module EEPROM storage content, and with write-in when
BIN binary code file compares, and the content compared is shown in PC machine；Then in the specific BIN binary code of original load
On the basis of file, the SN product ID indicated increases 1 automatically, re-starts CHECK SUM data check automatically again
With the accuracy of data in arithmetic check BIN binary code, BIN binary system after SN product ID is then increased 1 automatically again
Code is written in the optical module on 2 U6 of SFP electric interfaces socket, and successively poll terminates to write after the completion of 1-8 module write-in
Enter operation.
8. the device as described in claim 1 for reading and/or writing simultaneously more optical module EEPROM, it is characterised in that: to optical module
EEPROM read when, optical module EEPROM read and write software by microcontroller chip U2 switch I2C bus, by specified SFP
The EEPROM that optical module is corresponded on electric interfaces socket, which is read in PC machine, to be shown；Pass through the CHECK to the information in optical module
Whether SUM data check and operation carry out the information in judgment module accurate.
9. the device as described in claim 1 for reading and/or writing simultaneously more optical module EEPROM, it is characterised in that: electric interfaces
Socket includes: that the 1-8 respectively SFP electric interfaces socket 1 of U5-U12, SFP electric interfaces socket 2 ... SFP electric interfaces are inserted
Seat 8, and the TX_Disable pin on every SFP electric interfaces socket is grounded respectively, when optical module is plugged into corresponding SFP
When on electric interfaces socket, optical module EEPROM read/write circuit plate triggers the TX Disable function of the optical module, passes through shutdown
The light emitting of optical module reduces the power consumption of whole device to reach.
10. the device as described in claim 1 for reading and/or writing simultaneously more optical module EEPROM, it is characterised in that: microcontroller list
First MCU is one chip microcomputer or single-chip microcontroller；Micro controller unit MCU does the frequency of central processor CPU with specification
Appropriate reduction, and by memory memory, counter Timer, USB, modulus converter A/D, universal asynchronous receiving-transmitting transmitter UART,
Programmable controller PLC, direct memory access dma controller perimeter interface or even LCD chip driving circuit are all incorporated into single
On chip, the computer of chip-scale is formed, does various combination control for multiple applications.
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| CN110971292A (en) * | 2019-12-31 | 2020-04-07 | 深圳市欧深特信息技术有限公司 | Detection method and device of CSFP optical module |
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| CN1471245A (en) * | 2003-06-30 | 2004-01-28 | 北京港湾网络有限公司 | Method and apparatus for plugging optical transcreceiving module internal E2 PROM for read broadband network device |
| CN107078806A (en) * | 2014-05-28 | 2017-08-18 | 星景国际私人有限公司 | Optical transceiver apparatus and method |
| CN105302484A (en) * | 2015-10-19 | 2016-02-03 | 上海斐讯数据通信技术有限公司 | Apparatus and method for batch reading of digital diagnosis information in optical modules of Ethernet card |
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| CN207731260U (en) * | 2018-02-01 | 2018-08-14 | 四川泰瑞创通讯技术股份有限公司 | The general download apparatus of optical module firmware program |
| CN209199608U (en) * | 2019-01-15 | 2019-08-02 | 泰瑞创通讯(成都)有限公司 | Read and write the switching strobe unit of more optical module EEPROM |
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| CN110456185A (en) * | 2019-07-19 | 2019-11-15 | 成都承芯科技有限公司 | Electron key test macro and test method |
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Application publication date: 20190510 |