BCM84848A1KFSBG

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BCM84848A1KFSBG Application Field and Working Principle

BCM84848A1KFSBG belongs to the class of drivers, receivers, and transceivers, and this article will explain the application field and working principle of the device.

Overview

BCM84848A1KFSBG is an 8-port serial Gigabit Ethernet PHY transceiver designed by Broadcom Corporation. It integrates five 10/100/1000 Mbps PHY transceivers and offers support for the full set of IEEE 802.3u/x/z-2005 Ethernet standards as well as IEEE 802.3ab-2008, IEEE 802.1Qaz-2006, and IEEE 802.3ab-2010. The device supports auto-negotiation, full-duplex operation, jumbo frames, and non-blocking flow control (IEEE802.3x) for 10/100/1000 Mbps networks.

Application Field

BCM84848A1KFSBG is designed to bridge local area networks (LANs) with systems on the enterprise level. It applies to applications such as Ethernet switches and routers, optical networking, server networking, virtualization, data center, cloud computing, and industrial Ethernet applications. The device is ideal for high-speed AV video streaming, VoIP signalling and multimedia applications.

Working Principle

The BCM84848A1KFSBG device operates by using clock synchronization, auto-negotiation, and signal encoding techniques. These techniques are used to ensure reliable communication between the multiple devices connected to the network. The device identifies the currently connected network and dynamically configures the transmission rate and signal encoding to provide maximum performance.The device is configured with different types of signal encoding techniques in order to optimize the performance. It supports four signal encoding techniques: 64/66b, 8b/10b encoding, Manchester encoding, and Scrambled encoding.In 64/66b encoding, each data bit is encoded with 6 bits and 2 sync bits. In 8b/10b encoding, each 8-bit word is encoded with 10 bits and there are 2 sync bits. In Manchester encoding, each bit is encoded with two data states and two reference states. In Scrambled encoding, each bit is encoded with a random pattern to reduce the bit errors and to sustain the signal integrity.

Conclusion

BCM84848A1KFSBG is a 8-port serial Gigabit Ethernet PHY transceiver designed by Broadcom Corporation for bridging LANs with systems on the enterprise level. It applies to various high-speed applications and uses signal encoding techniques such as 64/66b, 8b/10b, Manchester and Scrambled to optimize the performance.

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