KS8721BLI

Product Overview

Category

KS8721BLI belongs to the category of Ethernet Physical Layer Transceiver.

Use

It is primarily used for Ethernet communication applications, providing a physical interface between the Ethernet MAC (Media Access Control) layer and the Ethernet PHY (Physical Layer).

Characteristics

• Supports 10/100 Mbps data rates
• Compliant with IEEE 802.3 standards
• Low power consumption
• Small form factor
• Robust performance in harsh environments

Package

The KS8721BLI comes in a compact package, suitable for surface mount technology (SMT) assembly. It is available in various package options, including QFN and LQFP.

Essence

The essence of KS8721BLI lies in its ability to facilitate reliable and efficient Ethernet communication by converting digital signals from the MAC layer into analog signals for transmission over the physical medium.

Packaging/Quantity

The KS8721BLI is typically packaged in reels or trays, depending on the manufacturer's specifications. The quantity per reel or tray can vary, but it is commonly available in quantities of 250 or 500 units.

Specifications

• Data Rates: 10/100 Mbps
• Supply Voltage: 3.3V
• Operating Temperature Range: -40°C to +85°C
• Interface: MII (Media Independent Interface) or RMII (Reduced Media Independent Interface)
• ESD Protection: ±8kV HBM (Human Body Model)

Detailed Pin Configuration

The KS8721BLI has a total of 48 pins. Here is a detailed pin configuration:

1. TXD0
2. TXD1
3. TX_EN
4. TX_ER
5. RXD0
6. RXD1
7. CRS_DV
8. RX_ER
9. REF_CLK
10. MDC
11. MDIO
12. VDDA
13. VSSA
14. VDD33
15. VSS33
16. VDD18
17. VSS18
18. VDD25
19. VSS25
20. VDD33_IO
21. VSS33_IO
22. VDDPLL
23. VSSPLL
24. XTAL_IN
25. XTAL_OUT
26. VDDXTAL
27. VSSXTAL
28. VDDPLL_IO
29. VSSPLL_IO
30. VDDPLL_CORE
31. VSSPLL_CORE
32. VDDPLLIOCORE
33. VSSPLLIOCORE
34. VDDPLLIOCORE2
35. VSSPLLIOCORE2
36. VDDPLLIOCORE3
37. VSSPLLIOCORE3
38. VDDPLLIOCORE4
39. VSSPLLIOCORE4
40. VDDPLLIOCORE5
41. VSSPLLIOCORE5
42. VDDPLLIOCORE6
43. VSSPLLIOCORE6
44. VDDPLLIOCORE7
45. VSSPLLIOCORE7
46. VDDPLLIOCORE8
47. VSSPLLIOCORE8
48. VDDPLLIOCORE9

Functional Features

• Auto-negotiation: KS8721BLI supports auto-negotiation, allowing it to automatically determine the best data rate and duplex mode for communication.
• LinkMD+: This feature provides advanced cable diagnostics and fault detection capabilities, enhancing network reliability and troubleshooting.
• Energy-Efficient Ethernet (EEE): The KS8721BLI supports EEE, which reduces power consumption during periods of low network activity, resulting in energy savings.

Advantages and Disadvantages

Advantages

• High compatibility with various Ethernet MACs and PHYs
• Low power consumption
• Robust performance in harsh environments
• Advanced features like LinkMD+ and EEE

Disadvantages

• Limited to 10/100 Mbps data rates, not suitable for Gigabit Ethernet applications
• Requires external magnetics for isolation and impedance matching

Working Principles

The KS8721BLI operates by receiving digital signals from the Ethernet MAC layer and converting them into analog signals suitable for transmission over the physical medium. It also receives analog signals from the physical medium and converts them back into digital signals for the MAC layer.

Detailed Application Field Plans

The KS8721BLI is widely used in various Ethernet communication applications, including: - Industrial automation - Automotive electronics - Home networking - Telecommunications equipment - Internet of Things (IoT) devices

Detailed and Complete Alternative Models

Some alternative models to KS8721BLI include: - KSZ8081RNB - DP83848CVV - LAN8720A - RTL8201CP