avago transceiver

How to disable the SFP module on H3C vswitches and other devices? The following warning is displayed: OPTMOD/4/PHONY_MODULE: GigabitEthernet1/0/2: This transceiver is NOT sold by H3C. h3C therefore shall NOT guarantee the normal function of the device or assume the maintenance responsibility thereof! This is a warning when SFP module is used on H3C vswitches, routers, and other devices. It generally means that the

configured manually using port mode gpon.2) Configure authentication parametersThe authentication parameters configured on the ONU are pre-allocated by the Olt and cannot be configured by the user, and can be configured using the Gpon-password cipher Password command in the Pon interface view. The Gpon system authenticates the ONU in three ways: only SN authentication, using only the combination of password or SN and password.3) (optional) Configure Optical module propertiesThe same as the Epon

the bias)2, the list gives:① varactor diodes (very likely for FM)②500m oscilloscope (High frequency)③ Wireless Transceiver Module④ color camera with AV terminal output (analog signal output)⑤ Millivolt meter (instruments every year)second, the idea1, according to the monolithic microcomputer function weakens, as well as the variable capacitance diode, the oscilloscope 500M high frequency, thought has the possibility out FM transmit receives. The two

synchronous serial port. All-in-line interface, independent transceiver, can be synchronizedUART: Universal asynchronous serial port. Two-way communication at standard baud rate with slow speedSPI: A serial transmission mode, three-wire system, the network can find its communication protocol and usage of3 Wires for data bidirectional transmissionSerial Peripheral Interface Serial Peripheral InterfaceUART: Universal Asynchronous transceiverThe UART is

worker thread (recall How the Java program is executed in the Tomcat thread, how the task is performed in the Dubbo worker thread), As a result, you can increase the number of worker threads by increasing the concurrency capability, and the main focus today is "how much of this model worker thread is set to maximum concurrency".Pure Asynchronous Threading ModelThere is no blocking anywhere, this threading model only needs to set a very small number of threads to achieve very high throughput, li

STM32F4 Serial transceiver Using DMA is still very convenient. However, configuring the DMA requires the configuration of the data length, which can be used to pre-estimate the length of the Send to configure the DMA send data length, but for the reception is not a good solution, because if the use of DMA receive interrupt is to configure the length of the data to be configured to 0 to start the outage. However, it is not possible to determine the len

environment3. Cooja and Contiki are connected by JNI (Java Native Interface), allowing emulated applications to run on a really contiki system4, Cooja and simulation node interaction is done through the plug-in plugins , such as timeline, Collectview, network, we use in the Cooja function modules are a plug-in5. The Contiki program running in Cooja is either compiled on the local host CPU or compiled on the MSP430 emulator6. The main design goal of the Cooja Simulator is extensibility, which us

1. cs8900aCS8900 chip is a LAN processing chip produced by Cirrus logic, which is very common in the embedded field. It is encapsulated with 100-pin tqfp, which is integrated with a 10-bit Ram and a 10-bit BASE-T Transceiver filter, and provides eight-bit and 16-bit interfaces. CS8900 is connected to the ARM chip in the 16-Bit mode. After the NIC chip is reset, the default operation mode is I/O connection, and the base address is 300 h. Cs8900a also p

, the information can be transmitted in two directions, but not at the same time two-way transmission is called single-duplex communication, the same two-way transmission is called full-duplex communication.Serial communication can be divided into synchronous communication and asynchronous communication two, asynchronous communication (UART) transceiver does not have the same clock source, and synchronous communication (SPI, I²C) has the same clock so

crossover, and duty-ratio adjustment and shift-equal functionality.7. Embedded dedicated Hard core　　embedded dedicated hard core is relative to the underlying embedded soft core, refers to the FPGA processing power of the hard core, equivalent to the ASIC circuit. To improve FPGA performance, chip manufacturers have integrated a number of dedicated hard cores inside the chip. For example: In order to improve the multiplication speed of FPGA, the main FPGA is integrated with special multipliers,

stream through the client objectInputStream in =S.getinputstream ();byte[] buf =New byte[1024];intLen =In.read (BUF); String Str=NewString (buf,0, Len); System.out.println (str); S.close ();################################################################################Simple and interactive TCP communication/*# # # * Case two: To achieve the client and the service side of the transceiver process. * Client*/System.out.println ("Client 2 starts ...");

Regardless of which MUC serial port for our experimental debugging is very convenient and practical, we can be involved in the program of some intermediate or other program state information printed out to display on the computer for debugging, many MUC and PC communication is carried out through the serial port. ZigBee is no exception.The USART mode operation has the following characteristics:1, 8-bit or 9-bit load data2, odd check, even check or no parity check3. Configure the start and stop b

hardware logic receives the data, it fills in the received FIFO with the received data. The program should take this data in time, the data is removed in the receiving FIFO is automatically deleted process, so in the receiving FIFO at the same time there will be an extra empty. If the data in the receiving FIFO is not taken out in time and the receiving FIFO is full, then the data will be lost if no vacancy can be filled in the future.Transceiver FIFO is mainly to solve the problem that the UAR

simple and efficient Task Transfer, interrupt processing, and time queue management. It also includes the underlying drivers of all hardware. Applications include serial communication, RF communication, and signal strength detection. The modular design protocol stack makes the entire system have a clear hierarchy, good scalability, and is conducive to secondary development of Zigbee technology.3.2 protocol stack designThe Zigbee protocol stack ensures the interoperability of wireless devices in

layer transceiver and 8 K × 16-bit SRAM, supporting various CPU bus types such as MCS-51 series, 80186 series, ISA and MC68K series. Ax88796 provides 10 Mbit/s and 100 Mbit/s Ethernet control functions based on the IEEE 802.3/IEEE 802.3u LAN standard, and uses the IEEE 802.3u-compatible Media-Independent Interface (MII ). In addition, the Ax88796 provides an optional standard printing interface for connecting to a printing device or for general I/O P

course the name:SPI (Serial Peripheral Interface: Serial Peripheral Interface );I2C (inter ic bus: indicates the INTER-ic bus)UART (Universal Asynchronous Receiver Transmitter: Universal Asynchronous transceiver)Second, the difference lies in the electrical signal line:The SPI bus consists of three signal lines: SCLK, SDO, and SDI ). The SPI bus allows multiple SPI devices to connect to each other. The SPI device that provides the SPI serial clock is

, RS-485 is one of them, it has the following characteristics: 1. electrical Properties of RS-485: The logic "1" is expressed by the voltage difference between two wires as + (2-6) V; the logical "0" is represented by the voltage difference between two wires-(2-6) v. The interface signal level is lower than the RS-232-C, it is not easy to damage the interface circuit chip, and the level is compatible with the TTL level, convenient and TTL circuit connection. 2. The highest data transmission rate

ignore the transceiver has a certain common mode voltage range, such as RS-422 common mode voltage range is-7 ~ + 7 V, while RS-485 transceiver common mode voltage range is-7 ~ + 12 V. The entire network can work normally only when the above conditions are met. When the common mode voltage in the network line exceeds this range, the communication stability and reliability will be affected, and even the int

Q: How to implement a single chipEthernetMicrocontroller?A: The trick is to connect the microcontroller and Ethernet Media to the Controller (MacAnd physical interface transceiver (Phy) Integrated into the same chip, which can remove many external components. This solution enables good matching between MAC and PHY, and reduces the number of pins and chip area. The Single-Chip Ethernet microcontroller also reduces power consumption, especially when the

when receiving data; @ R1 -- Adjust the sending unit address pointer when sending data; ******************** Serial Communication Knowledge ****************The working modes 2 and 3 are both 11-bit asynchronous transceiver and serial communication. The differences between the two are only different in the baud rate. Method 2: baud rate = 2 Smod * FOS/64 (smod = 0 or 1); Mode 3: baud rate = 2 smod * fosc/32*12 * (initial M-T); (1) Data Transmission Ti