Microchip Technology
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KSZ8721B
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KSZ8721B

Product Overview

Category

The KSZ8721B belongs to the category of Ethernet Physical Layer Transceivers.

Use

It is primarily used for providing physical layer connectivity in Ethernet applications.

Characteristics

  • Supports 10/100 Mbps data rates
  • Compliant with IEEE 802.3 standards
  • Low power consumption
  • Integrated termination resistors
  • Supports Auto-MDIX (Automatic Medium-Dependent Interface Crossover)

Package

The KSZ8721B is available in a small form-factor package, such as QFN or TQFP.

Essence

The essence of KSZ8721B lies in its ability to provide reliable and efficient Ethernet connectivity in various applications.

Packaging/Quantity

The product is typically packaged in reels or trays, with quantities varying based on customer requirements.

Specifications

  • Data Rate: 10/100 Mbps
  • Supply Voltage: 3.3V
  • Operating Temperature Range: -40°C to +85°C
  • Package Type: QFN/TQFP
  • Pin Count: 48

Detailed Pin Configuration

The KSZ8721B has a total of 48 pins. The pin configuration is as follows:

  1. VDDIO
  2. VDDA
  3. VDDCORE
  4. VDDPLL
  5. VDDXTAL
  6. XTALIN
  7. XTALOUT
  8. REFCLK
  9. RX_CLK
  10. TX_CLK
  11. CRS_DV
  12. RXD0
  13. RXD1
  14. RXD2
  15. RXD3
  16. RX_ER
  17. MDIO
  18. MDC
  19. TX_EN
  20. TXD0
  21. TXD1
  22. TXD2
  23. TXD3
  24. TX_ER
  25. VDDIO
  26. VDDA
  27. VDDCORE
  28. VDDPLL
  29. VDDXTAL
  30. XTALIN
  31. XTALOUT
  32. REFCLK
  33. RX_CLK
  34. TX_CLK
  35. CRS_DV
  36. RXD0
  37. RXD1
  38. RXD2
  39. RXD3
  40. RX_ER
  41. MDIO
  42. MDC
  43. TX_EN
  44. TXD0
  45. TXD1
  46. TXD2
  47. TXD3
  48. TX_ER

Functional Features

  • Supports full-duplex and half-duplex modes
  • Implements Auto-Negotiation for link establishment
  • Provides LED indicators for link/activity status
  • Supports Energy Efficient Ethernet (EEE) mode for power savings

Advantages and Disadvantages

Advantages

  • High-speed data transmission
  • Low power consumption
  • Compact package size
  • Easy integration into Ethernet systems
  • Supports various Ethernet standards

Disadvantages

  • Limited to 10/100 Mbps data rates
  • May require additional components for certain applications

Working Principles

The KSZ8721B operates by receiving and transmitting Ethernet frames through the physical layer. It utilizes advanced signal processing techniques to ensure reliable data transmission over the network.

Detailed Application Field Plans

The KSZ8721B is widely used in various applications, including: - Industrial automation - Home networking - Automotive electronics - Internet of Things (IoT) devices - Telecommunications equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the KSZ8721B include: - KSZ8081MNX - DP83822 - LAN8720A

These models can be considered as alternatives based on specific application requirements.

In conclusion, the KSZ8721B is a versatile Ethernet Physical Layer Transceiver that provides reliable and efficient connectivity in various applications. With its compact size, low power consumption, and support for industry standards, it offers a cost-effective solution for Ethernet connectivity needs.

قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق KSZ8721B في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of KSZ8721B in technical solutions:

Q1: What is KSZ8721B? A1: KSZ8721B is a highly integrated Ethernet physical layer transceiver (PHY) chip that provides all the necessary functions required for connecting an Ethernet-enabled device to a network.

Q2: What are the key features of KSZ8721B? A2: Some key features of KSZ8721B include support for 10/100 Mbps data rates, auto-negotiation, full-duplex operation, low power consumption, and various diagnostic capabilities.

Q3: How can I interface KSZ8721B with my microcontroller or processor? A3: KSZ8721B uses the MII (Media Independent Interface) or RMII (Reduced Media Independent Interface) interface to communicate with the host microcontroller or processor. You need to ensure that your microcontroller or processor supports one of these interfaces.

Q4: Can KSZ8721B be used in both industrial and consumer applications? A4: Yes, KSZ8721B is suitable for both industrial and consumer applications. It has a wide operating temperature range and meets various industry standards, making it versatile for different environments.

Q5: Does KSZ8721B support Power over Ethernet (PoE)? A5: No, KSZ8721B does not support Power over Ethernet. If you require PoE functionality, you would need to use an additional PoE controller along with KSZ8721B.

Q6: Can KSZ8721B be used in automotive applications? A6: Yes, KSZ8721B is AEC-Q100 qualified, which makes it suitable for automotive applications. It can withstand the harsh conditions and stringent requirements of the automotive industry.

Q7: What is the power supply voltage range for KSZ8721B? A7: The power supply voltage range for KSZ8721B is typically between 3.3V and 3.6V. It is important to provide a stable power supply within this range for proper operation.

Q8: Does KSZ8721B support Energy Efficient Ethernet (EEE)? A8: Yes, KSZ8721B supports Energy Efficient Ethernet (IEEE 802.3az) which helps reduce power consumption during periods of low network activity.

Q9: Can I use KSZ8721B in a multi-port switch configuration? A9: Yes, KSZ8721B can be used in multi-port switch configurations. It supports MII or RMII interfaces for connecting multiple PHYs together to form a switch.

Q10: Are there any evaluation boards or reference designs available for KSZ8721B? A10: Yes, Microchip (formerly Microsemi) provides evaluation boards and reference designs for KSZ8721B, which can help you quickly prototype and integrate the chip into your solution.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.