KS8721BL

Series:	--
Packaging:	Tray
Part Status:	Discontinued at Digi-Key
Type:	Transceiver
Protocol:	MII, RMII
Number of Drivers/Receivers:	1/1
Duplex:	Full
Data Rate:	--
Voltage - Supply:	2.375 V ~ 2.625 V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	48-LQFP
Supplier Device Package:	48-LQFP (7x7)
Base Part Number:	KS8721

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KS8721BL Application Field and Working Principle

The KS8721BL is a state-of‑the‑art Physical Layer Transceiver IC designed to meet the requirements of high speed LANs, such as 10/100 Mbps Ethernet and Gigabit Ethernet. The KS8721BL is the perfect choice for LAN applications, where it provides very high performance, high flexibility and low power consumption. It is designed to provide an easy to use and cost effective way to implement high speed Ethernet links in a variety of applications.

Overview

The KS8721BL is a 21.5-pin 10/100 Mbps Physical Layer Transceiver IC that is designed to interface with a Media Independent Interface (MII) interface. The KS8721BL includes all the components necessary to link 10BASE-T and 100BASE-TX Ethernet media to a single MII interface. The KS8721BL is a compliant device to IEEE 802.3 and can be used to provide a full features MII port to IEEE 802.3u compliant PHYs. The KS8721BL is designed to transmit and receive data in full duplex mode over the 10BASE-T and 100BASE-TX Ethernet links. It implements Power Down and Sleep Modes to reduce power consumption, providing efficient power savings during inactivity. The device is designed to operate from a 3V or 3.3 V power supply.

Application Field

The KS8721BL is suitable for use in a wide range of applications, including:

• Network hubs
• Network interface cards
• Routers
• Embedded devices
• Modems
• Set-top boxes
• Wireless access points
• Printers
• Storage area networks
• Audio/video streaming

The device provides high performance and low power consumption in any Ethernet applications that require 10BASE-T and 100BASE-TX ports, making it an ideal choice.

Working Principle

The KS8721BL is an integrated medium-access controller (MAC) and Physical Layer Transceiver chip. It is designed to support the IEEE 802.3 10BASE-T and 100BASE-TX Ethernet standards. The MAC is configured to provide a single MII port for data transmission and reception over the Ethernet link. The output of the MAC is connected to a physical transceiver, which is responsible for encoding and decoding the data stream for transmission over the medium.The KS8721BL has a configurable power saving mode, which can be enabled to reduce power consumption during periods of no activity. The power supply operating range is from 3V to 3.3V.The KS8721BL includes a series of auto-negotiation protocols, which will detect the speed, duplex, and auto-negotiation protocol being used on the same Ethernet link. This allows the device to automatically adjust its own settings to match those of the other device. The KS8721BL is designed to work with an EMI filter, which reduces interference and improves signal integrity. The chip also includes a parallel port, which can be used to control customized features in the device, such as LED indicators or other features.The KS8721BL has a built-in memory and RAM for buffering and storing data. This allows the chip to process data in a more efficient and reliable manner.

Conclusion

The KS8721BL is an impressive Physical Layer Transceiver IC, designed to meet the demanding requirements of high speed LANs, such as 10/100 Mbps Ethernet and Gigabit Ethernet. It is designed to provide an easy to use and cost-effective solution to allow 10BASE-T and 100BASE-TX Ethernet media to be connected to a single MII interface, with high reliability and excellent efficiency. Its multiple power saving modes also allow it to be used in applications where long periods of inactivity occur, reducing its power consumption and allowing it to be a viable option for any application requiring 10/100 Ethernet links.

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