Device and method for duplexing and deduplexing physical layer of Ethernet
A technology of multiplexing device and physical layer, applied in the field of Ethernet physical layer information processing, can solve the problem that MAC layer port can only correspond to one physical layer port and so on
Active Publication Date: 2009-06-03
NEW H3C TECH CO LTD
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Problems solved by technology
[0005] The problem solved by the present invention is to provide an Ethernet physical layer multiplexing and demultiplexing device and method to solve the disadvantage that one MAC layer port can only correspond to one physical layer port in the prior art
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[0058] Ethernet physical layer multiplexing device of the present invention such as image 3 As shown, it includes a physical layer signal conversion unit 31 , a signal multiplexing unit 32 and a digital interface unit 33 . The physical layer signal conversion unit 31 receives more than one physical layer low-speed signal, and converts each physical layer low-speed signal into a corresponding MAC layer low-speed signal by performing analog-to-digital conversion, clock extraction, decoding, and MAC interface processing on each signal. The signal multiplexing unit 32 receives the MAC layer low-speed signal output by the physical layer signal conversion unit 31, and sets the port mark for each MAC layer low-speed signal, and multiplexes the multiple low-speed signals with the port mark set by time division The mode is multiplexed into one MAC layer high-speed signal, which is sent to the MAC layer through the digital interface unit 33 .
[0059] Wherein, the internal structure o...
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A device of Ethernet network physical layer multiplexing and relieve multiplexing, including: the physical layer signal and the MAC layer signal transform the unit, the signal multiplexing and the relieve multiplexing mutually. The invention provides a method to achieve Ethernet network physical layer multiplexing and relieve multiplexing by the device, it includes: in the upward direction, transform at least two low speed physical layer signals to the corresponding low speed MAC layer signal; set and save the sign of the port; multiply a high speed MAC layer signal by time-division way; in the downward direction, relieve multiplexing the MAC layer high speed signal to at least two MAC low speed signal; read the MAC layer low speed signal and the port sign in the low speed signal by the low speed clock signal, and output the MAC layer low speed signal from the corresponding downward port according to the every port sign confirm the corresponding downward port. The invention can achieve the aim that one or few high speed upward port which correspond some low speed downward physical interface.
Description
technical field [0001] The invention relates to Ethernet physical layer information processing, in particular to an Ethernet physical layer multiplexing and demultiplexing device and method. Background technique [0002] Specifications of physical layer access chips currently on the market include 10 / 100M adaptive, GE (GigabitEthernet, Gigabit Ethernet), and 10GE. The main function of this type of chip is to complete the encoding and decoding of the physical layer, analog / digital conversion, clock recovery, and analog amplification, etc., and convert the physical layer signal into a MAC layer signal. Taking a common 8-port 100M physical layer chip as an example, its internal structure is as follows figure 1 As shown, it includes 8 FE (Fast Ethernet, Fast Ethernet) analog interfaces to the physical layer, and 8 FE digital interfaces to the MAC (Media Access Control, Media Access Control) layer. from figure 1 It can be seen from the figure that the interface rates on both s...
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IPC IPC(8): H04L12/28H04L29/02
Inventor 于洋王玮
Owner NEW H3C TECH CO LTD