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KS8721SLA4
Product Overview
- Category: Ethernet Transceiver
- Use: The KS8721SLA4 is a high-performance, single-chip 10/100BASE-TX/FX Ethernet physical layer transceiver. It is designed for use in various networking applications.
- Characteristics: The KS8721SLA4 offers advanced features such as auto-negotiation, auto-MDIX, and power-down mode. It supports both full-duplex and half-duplex modes of operation.
- Package: The KS8721SLA4 comes in a small form-factor package (SFP) with integrated magnetics, making it suitable for space-constrained designs.
- Essence: This transceiver provides reliable and efficient Ethernet connectivity for a wide range of devices and systems.
- Packaging/Quantity: The KS8721SLA4 is available in tape and reel packaging, with a quantity of 250 units per reel.
Specifications
- Interface: MII (Media Independent Interface)
- Data Rate: 10/100 Mbps
- Operating Voltage: 3.3V
- Temperature Range: -40°C to +85°C
- Compliance: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Pin Configuration
The KS8721SLA4 has a total of 48 pins. Here is the detailed pin configuration:
- VDD33
- TXEN
- TXD0
- TXD1
- TXD2
- TXD3
- TX_CLK
- TX_ER
- GND
- MDIO
- MDC
- CRS
- RXD0
- RXD1
- RXD2
- RXD3
- RX_CLK
- RX_ER
- REF_CLK
- VDD33
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Functional Features
- Auto-negotiation: The KS8721SLA4 supports auto-negotiation, allowing it to automatically determine the best possible connection speed and duplex mode.
- Auto-MDIX: This feature enables the transceiver to automatically detect and correct for crossover or straight-through cable connections.
- Power-down Mode: The KS8721SLA4 includes a power-down mode that reduces power consumption when the device is not in use.
Advantages and Disadvantages
Advantages: - High-performance Ethernet connectivity - Small form-factor package with integrated magnetics - Advanced features like auto-negotiation and auto-MDIX
Disadvantages: - Limited to 10/100 Mbps data rate - Requires external magnetics for FX (fiber) operation
Working Principles
The KS8721SLA4 operates based on the principles of Ethernet communication. It uses the MII interface to connect with the MAC (Media Access Control) layer of the networking system. The transceiver converts the digital signals from the MAC into analog signals suitable for transmission over the physical medium (copper or fiber). It also performs signal conditioning and error checking functions.
Application Field Plans
The KS8721SLA4 can be used in various networking applications, including: - Ethernet switches - Network interface cards (NICs) - Industrial automation systems - Embedded systems - Internet of Things (IoT) devices
Alternative Models
Here are some alternative models that offer similar functionality to the KS8721SLA4: - KSZ8081RNB - DP83848CVV - LAN8720A
These models provide comparable features and performance, making them suitable alternatives for different design requirements.
In conclusion, the KS8721SLA4 is a versatile Ethernet transceiver that offers reliable connectivity and advanced features. Its small form-factor package and integrated magnetics make it suitable for space-constrained designs. While it has some limitations in terms of data rate and fiber operation, it provides an efficient solution for various networking applications.
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技術ソリューションにおける KS8721SLA4 の適用に関連する 10 件の一般的な質問と回答をリストします。
Sure! Here are 10 common questions and answers related to the application of KS8721SLA4 in technical solutions:
Q1: What is KS8721SLA4? A1: KS8721SLA4 is a highly integrated Ethernet physical layer transceiver (PHY) chip used for connecting devices to an Ethernet network.
Q2: What are the key features of KS8721SLA4? A2: The key features of KS8721SLA4 include support for 10/100 Mbps data rates, auto-negotiation, MDI/MDIX crossover, power-down mode, and various diagnostic functions.
Q3: How can I connect KS8721SLA4 to my microcontroller or processor? A3: KS8721SLA4 uses a standard MII (Media Independent Interface) or RMII (Reduced Media Independent Interface) interface, which can be easily connected to most microcontrollers or processors.
Q4: Can KS8721SLA4 be used in both full-duplex and half-duplex modes? A4: Yes, KS8721SLA4 supports both full-duplex and half-duplex communication modes, depending on the requirements of your application.
Q5: Does KS8721SLA4 require an external crystal oscillator? A5: Yes, KS8721SLA4 requires an external 25 MHz crystal oscillator for clock synchronization.
Q6: Can KS8721SLA4 operate with different supply voltages? A6: Yes, KS8721SLA4 supports a wide range of supply voltages, typically from 3.3V to 5V.
Q7: Is KS8721SLA4 compatible with different Ethernet standards? A7: Yes, KS8721SLA4 is compliant with IEEE 802.3 and supports both 10BASE-T and 100BASE-TX Ethernet standards.
Q8: Can KS8721SLA4 be used in industrial temperature environments? A8: Yes, KS8721SLA4 is designed to operate in a wide temperature range, typically from -40°C to +85°C, making it suitable for industrial applications.
Q9: Does KS8721SLA4 support power-saving features? A9: Yes, KS8721SLA4 includes power-down mode and Wake-on-LAN functionality to help conserve power when the network is idle.
Q10: Are there any reference designs or application notes available for KS8721SLA4? A10: Yes, Micrel (now Microchip) provides reference designs and application notes that can help you with the implementation of KS8721SLA4 in your technical solution.
Please note that these answers are general and may vary depending on the specific requirements and implementation details of your technical solution.