詞語解釋
RGMII（Reduced Gigabit Media Independent Interface），即縮減型千兆介質(zhì)獨立接口，是一種網(wǎng)絡(luò)接口標(biāo)準(zhǔn)，由美國Intel公司于2001年提出，是一種網(wǎng)絡(luò)接口標(biāo)準(zhǔn)，用于將千兆以太網(wǎng)控制器連接到網(wǎng)絡(luò)系統(tǒng)中的其他元件，如以太網(wǎng)PHY（物理層）、交換機(jī)、路由器等。 RGMII是一種非常靈活的接口標(biāo)準(zhǔn)，它支持多種傳輸模式，可以滿足不同的應(yīng)用場景。RGMII接口可以支持千兆以太網(wǎng)，并且可以支持不同的數(shù)據(jù)速率，如10 Mbps、100 Mbps、1000 Mbps等。RGMII接口可以支持千兆以太網(wǎng)，并且可以支持不同的數(shù)據(jù)速率，如10 Mbps、100 Mbps、1000 Mbps等。 RGMII接口的應(yīng)用非常廣泛，主要用于將以太網(wǎng)控制器連接到網(wǎng)絡(luò)系統(tǒng)中的其他元件，如以太網(wǎng)PHY（物理層）、交換機(jī)、路由器等。RGMII接口可以支持多種網(wǎng)絡(luò)設(shè)備，如以太網(wǎng)交換機(jī)、路由器、網(wǎng)絡(luò)存儲設(shè)備、網(wǎng)絡(luò)安全設(shè)備等，可以滿足不同的網(wǎng)絡(luò)應(yīng)用場景。 RGMII接口還可以支持其他的千兆以太網(wǎng)應(yīng)用，如光纖網(wǎng)絡(luò)、藍(lán)牙網(wǎng)絡(luò)、無線網(wǎng)絡(luò)、局域網(wǎng)等，可以滿足不同的應(yīng)用需求。RGMII接口還可以支持多種千兆以太網(wǎng)應(yīng)用，如以太網(wǎng)橋接、以太網(wǎng)虛擬專用網(wǎng)絡(luò)（VLAN）、以太網(wǎng)路由器、以太網(wǎng)負(fù)載均衡器等。 RGMII接口的優(yōu)勢在于其靈活性和可擴(kuò)展性，可以支持多種應(yīng)用場景，滿足不同的網(wǎng)絡(luò)需求。RGMII接口的另一個優(yōu)勢在于它的低功耗特性，可以有效降低網(wǎng)絡(luò)系統(tǒng)的功耗，提高系統(tǒng)的效率。 總之，RGMII接口是一種靈活的網(wǎng)絡(luò)接口標(biāo)準(zhǔn)，可以支持多種應(yīng)用場景，滿足不同的網(wǎng)絡(luò)需求，具有良好的可擴(kuò)展性和低功耗特性，是一種非常有用的網(wǎng)絡(luò)接口標(biāo)準(zhǔn)。 簡化的吉比特媒體獨立接口稱為RGMII（Reduced Gigabit Media Independent Interface）。采用RGMII的目的是降低電路成本，使實現(xiàn)這種接口的器件的引腳數(shù)從22個減少到12個。 RGMII is a reduced pin count interface that can simplify design by reducing the interface pin count from the 25pins used in the GMII interface to 12. It can lower system cost compared to existing GMII or TBI interfaces by reducing the number of layers required to route high density networking solutions. Using RGMII, fewer pins are required for the MAC/switch ASIC, which can reduce the MAC/switch cost by enabling smaller die sizes than would be possible with GMII or TBI. However, the RGMII specification calls for a timing delay on both the receive signal and the transmit signal for each port that must be implemented in a board level trace. These trace lengths are typically arranged in a spiral on the board that takes approximately one square inch of board space per trace. Broadcom offers an alternative timing solution that eliminates the need for the timing delay traces. Assuming a one-inch space requirement per trace for both transmit and receive signals on 48 ports, elimination of the timing delay traces can save 96 square inches of layout space.
簡化的吉比特媒體獨立接口稱為RGMII（Reduced Gigabit Media Independent Interface）。采用RGMII的目的是降低電路成本，使實現(xiàn)這種接口的器件的引腳數(shù)從22個減少到12個。 RGMII is a reduced pin count interface that can simplify design by reducing the interface pin count from the 25pins used in the GMII interface to 12. It can lower system cost compared to existing GMII or TBI interfaces by reducing the number of layers required to route high density networking solutions. Using RGMII, fewer pins are required for the MAC/switch ASIC, which can reduce the MAC/switch cost by enabling smaller die sizes than would be possible with GMII or TBI. However, the RGMII specification calls for a timing delay on both the receive signal and the transmit signal for each port that must be implemented in a board level trace. These trace lengths are typically arranged in a spiral on the board that takes approximately one square inch of board space per trace. Broadcom offers an alternative timing solution that eliminates the need for the timing delay traces. Assuming a one-inch space requirement per trace for both transmit and receive signals on 48 ports, elimination of the timing delay traces can save 96 square inches of layout space.
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