cwdm transceiver

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The implementation of efficient FIFO serial port dual-machine communication on arm7.

in a centralized manner when the data volume reaches a certain amount to improve system performance. FIFO can be integrated into the chip. When the system requires a large buffer, it can also be implemented using a separate Ram. The b0x serial transceiver consists of a 16 B FIFO and a data Cer. The data to be transmitted is written into the FIFO, assigned to the transmitter, and finally sent out from the transmission pin shift, achieve the purpose of

[Sticker] minimum SMS sending and receiving system design with USB interface

. There are two types of USB controllers available on the market: single-chip microcomputer (MCU) with USB interface or pure USB interface chip. I chose cygnal's c8051f320 chip as the former chip. Cygnal's c8051f series single-chip microcomputer is an integrated hybrid signal chip system Soc. It has a fully compatible Microcontroller with the MCS-51 kernel and instruction set, with a USB transceiver, fully compliant with USB protocol 2.0, supports 12

No borrow address for IP protocol troubleshooting

. Line protocol current state: DOWNDescription: To beijingRoute Port, The Maximum Transmit Unit is 1500 Internet protocol processing: disabled IP Sending Frames 'format is PKTFMT_ETHNT_2, Hardware address is 00e0-fc7d-a497 The Vendor PN is HFBR-5710L Port BW: 1G, Transceiver max BW: 1G, Transceiver Mode: MultiMode WaveLength: 850nm, Transmission Distance: 550 m Loopback: none, full-duplex

How to set the internet cafe Router

As the center of Internet cafes, vrouters are dominant. Next, let's talk about how to set up the Internet cafe router. Internet cafes provide a broadband optical cable from a network supplier. The bandwidth of this optical cable is faster than that of the Household Network. Optical Cable through the optical transceiver Access Router, the router can be connected to several switches, a common switch has 24 ports, one of which has an import, 23 outlets,

Design of wireless data collection system for SimpliciTI network protocol (1)

. The CC1110 chip contains the CC1100 RF transceiver and is embedded with an enhanced 51 kernel microcontroller. The chip is embedded with 32 KB programmable Flash memory, 4 kb sram memory, 8-Channel 8 ~ 14-bit A/D converter, 1 16-bit timer and 3 8-bit timer, 2 UART/SPI, RTC and 21 universal I/0. The CC1100-based high-performance wireless transceiver works at 433 MHz and features high frequency stability a

GTX use (in update)

1.XILINX GTX Introduction The GTX is a low-power gigabit transceiver on the Virtex series FPGA, and the GTX operating bandwidth range on the V6 chip is 750mb/s to 6.6GB/S, enabling two-way transmission and transceiver bidirectional independence. The GTX receive and transmit directions are made up of both PMA and PCs, and PCs provides rich physical coding layer features such as 8B/10B encoding, and the PMA i

Network Card composition principle

mode, the NIC converts the serial data and parallel data. Before sending data, the network adapter needs to talk to the receiving network adapter to determine the maximum size of data to be sent, the size of the data to be sent, the interval between the two sent data, the waiting time for confirmation, and each maximum data volume and data transmission speed that the network adapter can withstand before the overflow.I. basic structure of the network cardNic includes hardware and firmware progra

Relationship between MAC and PHY of Ethernet chips

Q: How to implement a Single-Chip Ethernet microcontroller? A: The trick is to integrate the microcontroller, Ethernet Media Access Controller (MAC), and physical interface transceiver (PHY) 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 power

Determine whether it is a simulator or not.

Determine whether it is a simulator or not. Go directly to the code !!! -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. self. title = @ "determining whether it is a simulator"; [self isSimulator] ;}# pragma-mark-functions-(void) isSimulator {if (TARGET_IPHONE_SIMULATOR) {NSLog (@ "Simulator");} else {NSLog (@ "not Simulator ");}} How can we determine whether the monitoring camera is analog or digital? First, the difference between a digital

[Switch] RS232 serial communication details

/11. 0592/1000000 s Single-Chip Microcomputer machine cycle T3 = 12 * t2 T1/T3 = 96 That is, for the serial port of 9600bps, the single-chip microcomputer samples it at a rate of 96 times. If the MCU crystal oscillator is used incorrectly, the serial port will receive an error code. --------------------------------- RS485 and rs422 RS485 bus, when the communication distance is dozens of meters to kilometers, widely used RS-485 serial bus standard. RS485 adopts balanced transmission

How to support long-distance fiber-optic applications

choose excellent performance.Of course, some manufacturers also associate extended distance support with multimode optical fiber 1300 nm transceiver, such as 1000base-lx. As no 1300 nm source conditions are specified in any standard, multiple methods for producing such transmitters may form the activation of various multimode optical fibers.Therefore, these claims must indicate various possibilities for spontaneous activation, or must rely on externa

NS3 Wireless Data

Ns-3 Energy Model: Http://www.nsnam.org/wiki/index.php/NS-3_energy_model Battery base class energysource Http://www.nsnam.org/doxygen-release/classns3_1_1_energy_source.html Transceiver basic deviceenergymodel Http://www.nsnam.org/doxygen-release/classns3_1_1_device_energy_model.html NS3: wifiradioenergymodelHttp://www.nsnam.org/doxygen-release/classns3_1_1_wifi_radio_energy_model.htmlWi-Fi wireless transceiver

A detailed description of the sticky packet problem in Python socket network programming

. 2, first need to master the principle of a Socket transceiver message The sender can be 1k,1k send data and the receiving end of the application can 2k,2k extract data, of course, it may be 3k or more K extract data, that is, the application is not visible, so the TCP protocol is the interface to the flow of the Protocol, This is also prone to sticky packets and UDP is a non-connected protocol, each UDP segment is a message, the application must be

Protocol converter type Summary

, then, it is converted to a network device with an Ethernet electrical signal, and the signal passing through the scrambling code is transmitted on the optical fiber 。 Type 6: Ethernet-single-channel E1 optical protocol Converter Ethernet-single-channel E1 optical protocol converter is a network device that converts standard Ethernet Optical Signals and single-channel E1 electrical signals 。 Type 7: Ethernet Optical Transceiver Ethernet optical

Nine types of inventory protocol Converter

corresponding optical signal to an E1 electrical signal, then, it is converted to a network device with an Ethernet electrical signal, and the signal passing through the scrambling code is transmitted on the optical fiber 。 Type 6: Ethernet-single-channel E1 optical protocol Converter Ethernet-single-channel E1 optical protocol converter is a network device that converts standard Ethernet Optical Signals and single-channel E1 electrical signals 。 Type 7: Ethernet Optical

Internet cafe routers have recommended several multi-Wan routes (1)

, internet access problems have plagued most Internet cafe operators, and these problems must be resolved through routers. Solve the Problem of online disconnection-vro bandwidth access To solve the problem of online disconnection, the router is mainly affected by the Access Line and the packet forwarding capability of the router. For Internet cafes, the main problem to solve the access line is to use fiber-optic access with large bandwidth. Generally, dozens of MB is necessary. Otherwise, it wi

New trends in Internet cafe networking: Dual-fiber access + Gigabit to desktop

. Therefore, the dual-fiber access solution launched by China Netcom is very popular. Introduction to dual-fiber access 1. The optical fiber is directly connected to the Internet cafe, and then the optical fiber transceiver converts the optical signal into a 10 M/M electrical signal. Optical fiber is used for access, featuring fast speed, good stability, low obstacle rate, and strong anti-interference ability. 2. hiper aitai 3300NB router is recommend

In-depth analysis of the networking scheme of Internet cafe Routers

cafe operators. The optical fiber access networking solution is also the best Networking Solution for current broadband applications. The general networking solution is as follows: 1. The optical fiber is directly connected to the Internet cafe, and then a optical fiber transceiver is used to convert the optical signal into a 10 M/M electrical signal. Optical fiber is used for access, featuring fast speed, good stability, low obstacle rate, and stro

Routing Protocol Design for WMN

differently. Mesh routers are equipped with more than two Wireless Transceiver Devices in the application of network convergence. The design of the routing protocol needs to consider the characteristics of Multi-wireless transceiver and multi-channel. In wireless access applications, generally, this parameter is not considered. In view of the above problems, in view of the characteristics of the WMN networ

Network Port Literacy One: Network card preliminary understanding

control and media access control, as well as a unique hardware address, MAC address, and a cache on the NIC. The network card must be assigned interrupt IRQ and basic I/O port address, The base memory address and transceiver (transceiver) must also be set Network card control chip: The most important component of the network card, is the network card control center, like the computer's CPU, contro

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