Message storing method for wide-band digital communication chip

Abstract

The message storing method for wide-band digital communication chip includes the following steps: defining the width of logic address and the physical address, with the logic address being one bit wider than the physical address; sectioning the memory region of the physical address in 2048 bytes each and addressing in the basic address plus offset, with the addressing space of the offset being within 1536 bytes; setting the lower 1536 bytes of each sections as message storing area and the rest 512 bytes as extended memory area; defining the MSB 0 / 1 as logic address addressing range of corresponding message storing area and MSB 1 / 0 as logic address addressing range of corresponding extended memory area; and establishing the mapping mechanism between the logic address and the physical address to realize the continuity of memory units, basic addresses and offset of the extended memory area addresses. The present invention raises the utilization of the memory space.

Description

Technical field: [0001] The invention relates to the field of chip technology, in particular to a storage method for a broadband data communication chip. Background technique: [0002] With the rapid development of local area networks, ethernet has become the most widely used networking method at present. The transmission bandwidth of Ethernet has also developed from 10M Ethernet to 100M Ethernet, Gigabit Ethernet and 10G Ethernet. [0003] It is impossible to process Ethernet packets with such a large bandwidth without the support of hardware forwarding chips. Massive data, such high bandwidth, and complex processing tasks also put forward high requirements on the performance of the chip, not only requiring the chip to have a large forwarding bandwidth, but also to have a good traffic scheduling capability, otherwise the packet will be blocked , message burst and other issues will greatly reduce the forwarding performance of the chip, and the flow scheduling capability of...

AI Technical Summary

Problems solved by technology

However, since the addresses of these wasted storage units are discontinuous in the entire storage area and appear in the form of fragments, it is very difficult to use them directly, which not only causes very troublesome addressing, but also costs more The savings lead to an increase in the complexity of the entire system, which threatens the reliability and stability of the system

Obviously, it is not advisable to expand the storage area size at the expense of system reliability and stability

Images