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SOC Ethernet working mode self-adapting method and device

A working mode, Ethernet technology, applied in electrical components, data exchange details, time division multiplexing systems, etc., can solve problems such as rising costs, cumbersome chip design, and increased power consumption

Active Publication Date: 2019-08-23
FUZHOU ROCKCHIP SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To this end, it is necessary to provide a technical solution for adapting the SOC Ethernet working mode, which is used to solve the problem that the current SOC chip needs to independently set a clock circuit for each working mode of the Ethernet card, resulting in cumbersome chip design, increased power consumption, and rising costs

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  • SOC Ethernet working mode self-adapting method and device
  • SOC Ethernet working mode self-adapting method and device
  • SOC Ethernet working mode self-adapting method and device

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Embodiment Construction

[0069] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0070] see figure 1 , is a schematic diagram of an SOC Ethernet working mode adaptive device related to an embodiment of the present invention. The device includes an external chip 101, an internal chip 102, an operating mode selection circuit 103, a clock gating circuit 104, and an Ethernet controller 105; the internal chip 102 is connected to the Ethernet controller 105; the external chip 101 includes a first A clock generation unit 111, the internal chip 102 includes a second clock generation unit 112, a first power division unit 122 and a second power division unit 123; the clock gating circuit 104 is respectively connected to the first power division unit 122, the second power division unit The two power division unit 123, the f...

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PUM

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Abstract

The invention provides an SOC Ethernet operating mode adaptive method and device. The device configures an operating mode of the current device through an operating mode selection circuit, and adjusts a clock corresponding to the current operating mode through a clock gating circuit to complete the automatic switching of a working clock; and the clock gating circuit can execute a close operation for a non-working clock, and thus the purpose of saving the power consumption can be achieved. The device provided by the invention can support the operating modes of RMII, GMII, RGMII and the like, and is also applicable regardless of whether an external chip has the own clock generating unit; and through the coordination of SOC internal chips and the external chips, the switching of the working clock can be performed in a good order, the power consumption can be maximally reduced on the basis of ensuring the normal operation of an Ethernet controller, and the effect of saving the hardware cost can be achieved.

Description

technical field [0001] The invention relates to the field of SOC chip architecture, in particular to a SOC Ethernet working mode self-adaptation method and device. Background technique [0002] Ethernet MAC (Media Access Control, media access control layer) has a variety of working modes, mainly including the following: one is 10M 100M Ethernet, the related protocol is RMII, and the corresponding data transmission rate is 10M and 10M 100M; the other is Gigabit Ethernet, related protocols include GMII or RGMII, and Gigabit Ethernet cards are backward compatible with 10M and 100M transmission rates. [0003] Since the Ethernet card has many working modes and has very strict requirements on the clock frequency, a clock circuit is usually designed for each working mode to meet the clock frequency requirement. However, the design in this way is cumbersome and complicated, which not only increases the hardware area of ​​the circuit, but also increases the power consumption when t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/02H04J3/02
Inventor 廖裕民陈继晖
Owner FUZHOU ROCKCHIP SEMICON