Ethernet interface and control module plays a very important role in the serial device server hardware inside, it processes the IP packets from Ethernet, taking into account the principles of universality, we use a Ethernet controller chip to complete these function, and add a piece of AT24C01 to store Ethernet controller chip status in the main processing module.
Serial data processing module to complete the level for serial data format conversion and data stream processing, judgment start bit serial data and stop bits, complete extraction of the data and parity bits.
First, the main processor to initialize the network and serial devices, when data from the Ethernet transmission over packet processor to analyze, and if ARP Address Resolution physics packets, then the program into the ARP handler; if IP data package and transport layer uses UDP, the port is correct, then that data packet is correct, data unpack the data portion by the corresponding serial output port.
Conversely, if the received data from the serial port, the data is packaged in accordance with the UDP format, into Ethernet controller chip, its output data to the Ethernet. Application layer delivery system to handle software, users can process data received on demand. Hardware system modules. Depending on the structure of the hardware system and different functions, we can be a hardware system is divided into the following several modules. The main processing module to complete the main functions are: to establish a data link between the serial data and Ethernet IP data; controlling reading and writing through the Ethernet control chip to achieve receive and transmit IP data packet; determining a serial data stream format, complete the serial device selection and designation of the serial data stream format; control rate serial data stream and IP data packets between the control, data buffering; for UART and Ethernet control chip registers read write operations, and store and forward device status; the completion of the serial-parallel converter 16 bus data; complete bus address latch function; the completion of each port and each memory device chip-select functions; complete the interrupt status of each serial port discrimination, etc.
The module consists of an Ethernet interface and Ethernet control section parts. Ethernet interface is partially completed function serial device server and Ethernet interface circuit, a controller module has controls for all the role of the entire interface circuit to a coordinated manner with the follow-up circuit complete Ethernet transceiver functions. Ethernet control in part by the receiving end and the originator of the composition, among them there are Ethernet status detection and control unit, as well as send and receive coordination controller, shown in Figure 5.
Since Ethernet is half-duplex, so this part must be ready to monitor the status of Ethernet and Ethernet as needed to control, but also to coordinate the work of a good state of internal transceiver side of the circuit. Ethernet detection unit and transceiver coordination controller is to complete this function. Ethernet controller interface state detection unit and Ethernet interface, the state of the interface to send and receive coordination controller, while the control signal from the controller will coordinate processed and sent to the Ethernet interface controller to control interface state.
At the receiving end, the received serial data stream signal through the main processing module string and conversion and encoding, Ethernet control unit controls each section coordination, the resulting address, data, write to the RAM write control signal processing unit.
Accordingly, work processes, and the originator of the opposite receiving end. Leave Message. All forum topics Previous Topic Next Topic. New Member. I have the same issue. I need to check if there's a care pack available for a certain server.
The only info i got for some servers is the serial number. I also need the model number. Anyone how to find that, if it's possible without rebooting the server. Valued Contributor. Dear all, you cannot find model number within serial. In sn you will find other information, but model no you must read from tower label or BIOS. Product A-Z. Featured Topics Industry 4.
Advantech Global Services. Design To Order Services. Channel Partners. Downloads Resource Check your products information. Careers Jobs Search. Serial Device Servers.
Contact Us. Continue Reading.
0コメント